KVM: arm64: selftests: Introduce arch_timer selftest
v4 cover KVM: arm64: selftests: Introduce arch_timer selftest
Hello,
The patch series adds a KVM selftest to validate the behavior of ARM's generic timer (patch-15). The test programs the timer IRQs periodically, and for each interrupt, it validates the behaviour against the architecture specifications. The test further provides a command-line interface to configure the number of vCPUs, the period of the timer, and the number of iterations that the test has to run for.
Patch-16 adds an option to randomly migrate the vCPUs to different physical CPUs across the system. The bug for the fix provided by Marc with commit 3134cc8beb69d0d ("KVM: arm64: vgic: Resample HW pending state on deactivation") was discovered using arch_timer test with vCPU migrations.
Since the test heavily depends on interrupts, patch-14 adds a host library to setup ARM Generic Interrupt Controller v3 (GICv3). This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses. Symmetrical to this, patch-11 adds a guest library to talk to the vGIC, which includes initializing the controller, enabling/disabling the interrupts, and so on.
The following patches are utility patches that the above ones make use of:
Patch-1 adds readl/writel support for guests to access MMIO space.
Patch-2 imports arch/arm64/include/asm/sysreg.h into selftests to make use of the register encodings and read/write definitions.
Patch-3 is not directly related to the test, but makes aarch64/debug-exceptions.c use the read/write definitions from the imported sysreg.h and remove the existing definitions of read_sysreg() and write_sysreg().
Patch-4 introduces ARM64_SYS_KVM_REG, that helps convert the SYS_* register encodings in sysreg.h to be acceptable by get_reg() and set_reg().
Patch-5 adds the support for cpu_relax().
Patch-6 adds basic arch_timer framework.
Patch-7 adds udelay() support for the guests to utilize.
Patch-8 adds local_irq_enable() and local_irq_disable() for the guests to enable/disable interrupts.
Patch-9 adds the support to get the vcpuid for the guests. This allows them to access any cpu-centric private data in the upcoming patches.
Patch-10 adds a light-weight support for spinlocks for the guests to use.
Patch-12 and 13 adds helper routines to get the number of vCPUs and the mode of the VM, respectively. These are further used by the vGIC host routine (patch-14).
Patch-17 is unrelated to the test case, but it make a cleanup for aarch64/vgic_init.c to use REDIST_REGION_ATTR_ADDR from vgic.h.
Patch-18 is also unrelated, where it replaces ARM64_SYS_REG with ARM64_SYS_KVM_REG throughout the selftests. The definitions for the system register encodings are further deleted in processor.h.
The patch series, specifically the library support, is derived from the kvm-unit-tests and the kernel itself.
Regards,
Raghavendra
v3 -> v4:
Addressed the comments by Andrew, Oliver, and Ricardo (Thank you):
- Reimplemented get_vcpuid() by exporting a map of vcpuid:mpidr to the guest.
- Import sysreg.h from arch/arm64/include/asm/sysreg.h to get the system register encodings and its read/write support. As a result, delete the existing definitions in processor.h.
- Introduce ARM64_SYS_KVM_REG that converts SYS_* register definitions from sysreg.h into the encodings accepted by get_reg() and set_reg().
- Hence, remove the existing encodings of system registers (CPACR_EL1, TCR_EL1, and friends) and replace all the its consumers throughout the selftests with ARM64_SYS_KVM_REG.
- Keep track of number of vCPUs in 'struct kvm_vm'.
- Add a helper method to get the KVM VM's mode.
- Modify the vGIC host function vgic_v3_setup to make use of the above two helper methods, which prevents it from accepting nr_vcpus as an argument.
- Move the definition of REDIST_REGION_ATTR_ADDR from lib/aarch64/vgic.c to include/aarch64/vgic.h.
- Make the selftest, vgic_init.c, use the definition of REDIST_REGION_ATTR_ADDR from include/aarch64/vgic.h.
- Turn ON vCPU migration by default (-m 2).
- Add pr_debug() to log vCPU migrations. Helpful for diagnosis.
- Change TEST_ASSERT(false,...) to TEST_FAIL() in the base arch_timer test.
- Include linux/types.h for __force definitions.
- Change the type of 'val' to 'int' in spin_lock() to match the lock value type.
- Fix typos in code files and comments.
v2 -> v3:
- Addressed the comments from Ricardo regarding moving the vGIC host support for selftests to its own library.
- Added an option (-m) to migrate the guest vCPUs to physical CPUs in the system.
v1 -> v2:
Addressed comments from Zenghui in include/aarch64/arch_timer.h:
- Correct the header description
- Remove unnecessary inclusion of linux/sizes.h
- Re-arrange CTL_ defines in ascending order
- Remove inappropriate 'return' from timer_set_* functions, which returns 'void'.
v1: https://lore.kernel.org/kvmarm/[email protected]/
v2: https://lore.kernel.org/kvmarm/[email protected]/
v3: https://lore.kernel.org/kvmarm/[email protected]/
Raghavendra Rao Ananta (18):
KVM: arm64: selftests: Add MMIO readl/writel support
KVM: arm64: selftests: Add sysreg.h
KVM: arm64: selftests: Use read/write definitions from sysreg.h
KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
KVM: arm64: selftests: Add support for cpu_relax
KVM: arm64: selftests: Add basic support for arch_timers
KVM: arm64: selftests: Add basic support to generate delays
KVM: arm64: selftests: Add support to disable and enable local IRQs
KVM: arm64: selftests: Add guest support to get the vcpuid
KVM: arm64: selftests: Add light-weight spinlock support
KVM: arm64: selftests: Add basic GICv3 support
KVM: selftests: Keep track of the number of vCPUs for a VM
KVM: selftests: Add support to get the VM's mode
KVM: arm64: selftests: Add host support for vGIC
KVM: arm64: selftests: Add arch_timer test
KVM: arm64: selftests: arch_timer: Support vCPU migration
KVM: arm64: selftests: Replace ARM64_SYS_REG with ARM64_SYS_KVM_REG
KVM: selftests: vgic_init: Pull REDIST_REGION_ATTR_ADDR from vgic.h
tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 3 +- .../selftests/kvm/aarch64/arch_timer.c | 462 ++++++ .../selftests/kvm/aarch64/debug-exceptions.c | 30 +- .../selftests/kvm/aarch64/psci_cpu_on_test.c | 3 +- .../testing/selftests/kvm/aarch64/vgic_init.c | 3 +- .../kvm/include/aarch64/arch_timer.h | 142 ++ .../selftests/kvm/include/aarch64/delay.h | 25 + .../selftests/kvm/include/aarch64/gic.h | 21 + .../selftests/kvm/include/aarch64/processor.h | 93 +- .../selftests/kvm/include/aarch64/spinlock.h | 13 + .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ .../selftests/kvm/include/aarch64/vgic.h | 20 + .../testing/selftests/kvm/include/kvm_util.h | 2 + tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 ++ .../selftests/kvm/lib/aarch64/gic_private.h | 21 + .../selftests/kvm/lib/aarch64/gic_v3.c | 240 ++++ .../selftests/kvm/lib/aarch64/gic_v3.h | 70 + .../selftests/kvm/lib/aarch64/processor.c | 62 +- .../selftests/kvm/lib/aarch64/spinlock.c | 27 + .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 + tools/testing/selftests/kvm/lib/kvm_util.c | 12 + .../selftests/kvm/lib/kvm_util_internal.h | 1 + 23 files changed, 2636 insertions(+), 46 deletions(-) create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.c create mode 100644 tools/testing/selftests/kvm/include/aarch64/arch_timer.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/delay.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/spinlock.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/spinlock.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
Signature · 1 line
2.33.0.153.gba50c8fa24-goog
PATCH v4 1/18 KVM: arm64: selftests: Add MMIO readl/writel support
Define the readl() and writel() functions for the guests to access (4-byte) the MMIO region.
The routines, and their dependents, are inspired from the kernel's arch/arm64/include/asm/io.h and arch/arm64/include/asm/barrier.h.
--- .../selftests/kvm/include/aarch64/processor.h | 46 ++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-)
tools/testing/selftests/kvm/include/aarch64/processor.h +45 -1
@@ -9,6 +9,7 @@#include "kvm_util.h" #include <linux/stringify.h> +#include <linux/types.h> #define ARM64_CORE_REG (x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \
@@ -130,6 +131,49 @@ void vm_install_sync_handler(struct kvm_vm *vm, val; \ }) -#define isb () asm volatile("isb" : : : "memory") +#define isb () asm volatile("isb" : : : "memory") +#define dsb (opt) asm volatile("dsb " #opt : : : "memory") +#define dmb (opt) asm volatile("dmb " #opt : : : "memory") + +#define dma_wmb () dmb(oshst) +#define __iowmb () dma_wmb() + +#define dma_rmb () dmb(oshld) + +#define __iormb (v) \ +({ \ + unsigned long tmp; \ + \ + dma_rmb(); \ + \ +/* \ +* Courtesy of arch/arm64/include/asm/io.h: \ +* Create a dummy control dependency from the IO read to any \ +* later instructions. This ensures that a subsequent call \ +* to udelay() will be ordered due to the ISB in __delay(). \ +*/ \ + asmvolatile ("eor %0, %1, %1\n" \ +"cbnz %0, ." \ + :"=r" (tmp) :"r" ((unsigned long )(v)) \ + :"memory" ); \ +}) + +static __always_inline void __raw_writel(u32 val, volatile void *addr) +{ + asmvolatile ("str %w0, [%1]" : :"rZ" (val),"r" (addr)); +} + +static __always_inline u32 __raw_readl(const volatile void *addr) +{ +u32 val; + asmvolatile ("ldr %w0, [%1]" :"=r" (val) :"r" (addr)); +return val; +} + +#define writel_relaxed (v,c) ((void)__raw_writel((__force u32)cpu_to_le32(v),(c))) +#define readl_relaxed (c) ({ u32 __r = le32_to_cpu((__force __le32)__raw_readl(c)); __r; }) + +#define writel (v,c) ({ __iowmb(); writel_relaxed((v),(c));}) +#define readl (c) ({ u32 __v = readl_relaxed(c); __iormb(__v); __v; })#endif /* SELFTEST_KVM_PROCESSOR_H */
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2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
PATCH v4 2/18 KVM: arm64: selftests: Add sysreg.h
In reply to Raghavendra Rao AnantaBring-in the kernel's arch/arm64/include/asm/sysreg.h into selftests to make use of all the standard register definitions in consistence with the kernel.
--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h
tools/testing/selftests/kvm/include/aarch64/sysreg.h new file +1278 -0
@@ -0,0 +1,1278 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* +* Macros for accessing system registers with older binutils. +* +* Copied from arch/arm64/include/asm/sysreg.h +* +* Copyright (C) 2014 ARM Ltd. +* Author: Catalin Marinas <[email protected]> +*/ + +#ifndef __ASM_SYSREG_H +#define __ASM_SYSREG_H + +#include <linux/bits.h> +#include <linux/stringify.h> + +/* +* ARMv8 ARM reserves the following encoding for system registers: +* (Ref: ARMv8 ARM, Section: "System instruction class encoding overview", +* C5.2, version:ARM DDI 0487A.f) +* [20-19] : Op0 +* [18-16] : Op1 +* [15-12] : CRn +* [11-8] : CRm +* [7-5] : Op2 +*/ +#define Op0_shift 19 +#define Op0_mask 0x3 +#define Op1_shift 16 +#define Op1_mask 0x7 +#define CRn_shift 12 +#define CRn_mask 0xf +#define CRm_shift 8 +#define CRm_mask 0xf +#define Op2_shift 5 +#define Op2_mask 0x7 + +#define sys_reg (op0, op1, crn, crm, op2) \ + (((op0) << Op0_shift) | ((op1) << Op1_shift) | \ + ((crn) << CRn_shift) | ((crm) << CRm_shift) | \ + ((op2) << Op2_shift)) + +#define sys_insn sys_reg + +#define sys_reg_Op0 (id) (((id) >> Op0_shift) & Op0_mask) +#define sys_reg_Op1 (id) (((id) >> Op1_shift) & Op1_mask) +#define sys_reg_CRn (id) (((id) >> CRn_shift) & CRn_mask) +#define sys_reg_CRm (id) (((id) >> CRm_shift) & CRm_mask) +#define sys_reg_Op2 (id) (((id) >> Op2_shift) & Op2_mask) + +#ifndef CONFIG_BROKEN_GAS_INST + +#ifdef __ASSEMBLY__ +// The space separator is omitted so that __emit_inst(x) can be parsed as +// either an assembler directive or an assembler macro argument. +#define __emit_inst (x) .inst(x) +#else +#define __emit_inst (x) ".inst " __stringify((x)) "\n\t" +#endif + +#else /* CONFIG_BROKEN_GAS_INST */ + +#ifndef CONFIG_CPU_BIG_ENDIAN +#define __INSTR_BSWAP (x) (x) +#else /* CONFIG_CPU_BIG_ENDIAN */ +#define __INSTR_BSWAP (x) ((((x) << 24) & 0xff000000) | \ + (((x) << 8) & 0x00ff0000) | \ + (((x) >> 8) & 0x0000ff00) | \ + (((x) >> 24) & 0x000000ff)) +#endif /* CONFIG_CPU_BIG_ENDIAN */ + +#ifdef __ASSEMBLY__ +#define __emit_inst (x) .long __INSTR_BSWAP(x) +#else /* __ASSEMBLY__ */ +#define __emit_inst (x) ".long " __stringify(__INSTR_BSWAP(x)) "\n\t" +#endif /* __ASSEMBLY__ */ + +#endif /* CONFIG_BROKEN_GAS_INST */ + +/* +* Instructions for modifying PSTATE fields. +* As per Arm ARM for v8-A, Section "C.5.1.3 op0 == 0b00, architectural hints, +* barriers and CLREX, and PSTATE access", ARM DDI 0487 C.a, system instructions +* for accessing PSTATE fields have the following encoding: +* Op0 = 0, CRn = 4 +* Op1, Op2 encodes the PSTATE field modified and defines the constraints. +* CRm = Imm4 for the instruction. +* Rt = 0x1f +*/ +#define pstate_field (op1, op2) ((op1) << Op1_shift | (op2) << Op2_shift) +#define PSTATE_Imm_shift CRm_shift + +#define PSTATE_PAN pstate_field(0, 4) +#define PSTATE_UAO pstate_field(0, 3) +#define PSTATE_SSBS pstate_field(3, 1) +#define PSTATE_TCO pstate_field(3, 4) + +#define SET_PSTATE_PAN (x) __emit_inst(0xd500401f | PSTATE_PAN | ((!!x) << PSTATE_Imm_shift)) +#define SET_PSTATE_UAO (x) __emit_inst(0xd500401f | PSTATE_UAO | ((!!x) << PSTATE_Imm_shift)) +#define SET_PSTATE_SSBS (x) __emit_inst(0xd500401f | PSTATE_SSBS | ((!!x) << PSTATE_Imm_shift)) +#define SET_PSTATE_TCO (x) __emit_inst(0xd500401f | PSTATE_TCO | ((!!x) << PSTATE_Imm_shift)) + +#define set_pstate_pan (x) asm volatile(SET_PSTATE_PAN(x)) +#define set_pstate_uao (x) asm volatile(SET_PSTATE_UAO(x)) +#define set_pstate_ssbs (x) asm volatile(SET_PSTATE_SSBS(x)) + +#define __SYS_BARRIER_INSN (CRm, op2, Rt) \ + __emit_inst(0xd5000000 | sys_insn(0, 3, 3, (CRm), (op2)) | ((Rt) & 0x1f)) + +#define SB_BARRIER_INSN __SYS_BARRIER_INSN(0, 7, 31) + +#define SYS_DC_ISW sys_insn(1, 0, 7, 6, 2) +#define SYS_DC_CSW sys_insn(1, 0, 7, 10, 2) +#define SYS_DC_CISW sys_insn(1, 0, 7, 14, 2) + +/* +* System registers, organised loosely by encoding but grouped together +* where the architected name contains an index. e.g. ID_MMFR<n>_EL1. +*/ +#define SYS_OSDTRRX_EL1 sys_reg(2, 0, 0, 0, 2) +#define SYS_MDCCINT_EL1 sys_reg(2, 0, 0, 2, 0) +#define SYS_MDSCR_EL1 sys_reg(2, 0, 0, 2, 2) +#define SYS_OSDTRTX_EL1 sys_reg(2, 0, 0, 3, 2) +#define SYS_OSECCR_EL1 sys_reg(2, 0, 0, 6, 2) +#define SYS_DBGBVRn_EL1 (n) sys_reg(2, 0, 0, n, 4) +#define SYS_DBGBCRn_EL1 (n) sys_reg(2, 0, 0, n, 5) +#define SYS_DBGWVRn_EL1 (n) sys_reg(2, 0, 0, n, 6) +#define SYS_DBGWCRn_EL1 (n) sys_reg(2, 0, 0, n, 7) +#define SYS_MDRAR_EL1 sys_reg(2, 0, 1, 0, 0) +#define SYS_OSLAR_EL1 sys_reg(2, 0, 1, 0, 4) +#define SYS_OSLSR_EL1 sys_reg(2, 0, 1, 1, 4) +#define SYS_OSDLR_EL1 sys_reg(2, 0, 1, 3, 4) +#define SYS_DBGPRCR_EL1 sys_reg(2, 0, 1, 4, 4) +#define SYS_DBGCLAIMSET_EL1 sys_reg(2, 0, 7, 8, 6) +#define SYS_DBGCLAIMCLR_EL1 sys_reg(2, 0, 7, 9, 6) +#define SYS_DBGAUTHSTATUS_EL1 sys_reg(2, 0, 7, 14, 6) +#define SYS_MDCCSR_EL0 sys_reg(2, 3, 0, 1, 0) +#define SYS_DBGDTR_EL0 sys_reg(2, 3, 0, 4, 0) +#define SYS_DBGDTRRX_EL0 sys_reg(2, 3, 0, 5, 0) +#define SYS_DBGDTRTX_EL0 sys_reg(2, 3, 0, 5, 0) +#define SYS_DBGVCR32_EL2 sys_reg(2, 4, 0, 7, 0) + +#define SYS_MIDR_EL1 sys_reg(3, 0, 0, 0, 0) +#define SYS_MPIDR_EL1 sys_reg(3, 0, 0, 0, 5) +#define SYS_REVIDR_EL1 sys_reg(3, 0, 0, 0, 6) + +#define SYS_ID_PFR0_EL1 sys_reg(3, 0, 0, 1, 0) +#define SYS_ID_PFR1_EL1 sys_reg(3, 0, 0, 1, 1) +#define SYS_ID_PFR2_EL1 sys_reg(3, 0, 0, 3, 4) +#define SYS_ID_DFR0_EL1 sys_reg(3, 0, 0, 1, 2) +#define SYS_ID_DFR1_EL1 sys_reg(3, 0, 0, 3, 5) +#define SYS_ID_AFR0_EL1 sys_reg(3, 0, 0, 1, 3) +#define SYS_ID_MMFR0_EL1 sys_reg(3, 0, 0, 1, 4) +#define SYS_ID_MMFR1_EL1 sys_reg(3, 0, 0, 1, 5) +#define SYS_ID_MMFR2_EL1 sys_reg(3, 0, 0, 1, 6) +#define SYS_ID_MMFR3_EL1 sys_reg(3, 0, 0, 1, 7) +#define SYS_ID_MMFR4_EL1 sys_reg(3, 0, 0, 2, 6) +#define SYS_ID_MMFR5_EL1 sys_reg(3, 0, 0, 3, 6) + +#define SYS_ID_ISAR0_EL1 sys_reg(3, 0, 0, 2, 0) +#define SYS_ID_ISAR1_EL1 sys_reg(3, 0, 0, 2, 1) +#define SYS_ID_ISAR2_EL1 sys_reg(3, 0, 0, 2, 2) +#define SYS_ID_ISAR3_EL1 sys_reg(3, 0, 0, 2, 3) +#define SYS_ID_ISAR4_EL1 sys_reg(3, 0, 0, 2, 4) +#define SYS_ID_ISAR5_EL1 sys_reg(3, 0, 0, 2, 5) +#define SYS_ID_ISAR6_EL1 sys_reg(3, 0, 0, 2, 7) + +#define SYS_MVFR0_EL1 sys_reg(3, 0, 0, 3, 0) +#define SYS_MVFR1_EL1 sys_reg(3, 0, 0, 3, 1) +#define SYS_MVFR2_EL1 sys_reg(3, 0, 0, 3, 2) + +#define SYS_ID_AA64PFR0_EL1 sys_reg(3, 0, 0, 4, 0) +#define SYS_ID_AA64PFR1_EL1 sys_reg(3, 0, 0, 4, 1) +#define SYS_ID_AA64ZFR0_EL1 sys_reg(3, 0, 0, 4, 4) + +#define SYS_ID_AA64DFR0_EL1 sys_reg(3, 0, 0, 5, 0) +#define SYS_ID_AA64DFR1_EL1 sys_reg(3, 0, 0, 5, 1) + +#define SYS_ID_AA64AFR0_EL1 sys_reg(3, 0, 0, 5, 4) +#define SYS_ID_AA64AFR1_EL1 sys_reg(3, 0, 0, 5, 5) + +#define SYS_ID_AA64ISAR0_EL1 sys_reg(3, 0, 0, 6, 0) +#define SYS_ID_AA64ISAR1_EL1 sys_reg(3, 0, 0, 6, 1) + +#define SYS_ID_AA64MMFR0_EL1 sys_reg(3, 0, 0, 7, 0) +#define SYS_ID_AA64MMFR1_EL1 sys_reg(3, 0, 0, 7, 1) +#define SYS_ID_AA64MMFR2_EL1 sys_reg(3, 0, 0, 7, 2) + +#define SYS_SCTLR_EL1 sys_reg(3, 0, 1, 0, 0) +#define SYS_ACTLR_EL1 sys_reg(3, 0, 1, 0, 1) +#define SYS_CPACR_EL1 sys_reg(3, 0, 1, 0, 2) +#define SYS_RGSR_EL1 sys_reg(3, 0, 1, 0, 5) +#define SYS_GCR_EL1 sys_reg(3, 0, 1, 0, 6) + +#define SYS_ZCR_EL1 sys_reg(3, 0, 1, 2, 0) +#define SYS_TRFCR_EL1 sys_reg(3, 0, 1, 2, 1) + +#define SYS_TTBR0_EL1 sys_reg(3, 0, 2, 0, 0) +#define SYS_TTBR1_EL1 sys_reg(3, 0, 2, 0, 1) +#define SYS_TCR_EL1 sys_reg(3, 0, 2, 0, 2) + +#define SYS_APIAKEYLO_EL1 sys_reg(3, 0, 2, 1, 0) +#define SYS_APIAKEYHI_EL1 sys_reg(3, 0, 2, 1, 1) +#define SYS_APIBKEYLO_EL1 sys_reg(3, 0, 2, 1, 2) +#define SYS_APIBKEYHI_EL1 sys_reg(3, 0, 2, 1, 3) + +#define SYS_APDAKEYLO_EL1 sys_reg(3, 0, 2, 2, 0) +#define SYS_APDAKEYHI_EL1 sys_reg(3, 0, 2, 2, 1) +#define SYS_APDBKEYLO_EL1 sys_reg(3, 0, 2, 2, 2) +#define SYS_APDBKEYHI_EL1 sys_reg(3, 0, 2, 2, 3) + +#define SYS_APGAKEYLO_EL1 sys_reg(3, 0, 2, 3, 0) +#define SYS_APGAKEYHI_EL1 sys_reg(3, 0, 2, 3, 1) + +#define SYS_SPSR_EL1 sys_reg(3, 0, 4, 0, 0) +#define SYS_ELR_EL1 sys_reg(3, 0, 4, 0, 1) + +#define SYS_ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0) + +#define SYS_AFSR0_EL1 sys_reg(3, 0, 5, 1, 0) +#define SYS_AFSR1_EL1 sys_reg(3, 0, 5, 1, 1) +#define SYS_ESR_EL1 sys_reg(3, 0, 5, 2, 0) + +#define SYS_ERRIDR_EL1 sys_reg(3, 0, 5, 3, 0) +#define SYS_ERRSELR_EL1 sys_reg(3, 0, 5, 3, 1) +#define SYS_ERXFR_EL1 sys_reg(3, 0, 5, 4, 0) +#define SYS_ERXCTLR_EL1 sys_reg(3, 0, 5, 4, 1) +#define SYS_ERXSTATUS_EL1 sys_reg(3, 0, 5, 4, 2) +#define SYS_ERXADDR_EL1 sys_reg(3, 0, 5, 4, 3) +#define SYS_ERXMISC0_EL1 sys_reg(3, 0, 5, 5, 0) +#define SYS_ERXMISC1_EL1 sys_reg(3, 0, 5, 5, 1) +#define SYS_TFSR_EL1 sys_reg(3, 0, 5, 6, 0) +#define SYS_TFSRE0_EL1 sys_reg(3, 0, 5, 6, 1) + +#define SYS_FAR_EL1 sys_reg(3, 0, 6, 0, 0) +#define SYS_PAR_EL1 sys_reg(3, 0, 7, 4, 0) + +#define SYS_PAR_EL1_F BIT(0) +#define SYS_PAR_EL1_FST GENMASK(6, 1) + +/*** Statistical Profiling Extension ***/ +/* ID registers */ +#define SYS_PMSIDR_EL1 sys_reg(3, 0, 9, 9, 7) +#define SYS_PMSIDR_EL1_FE_SHIFT 0 +#define SYS_PMSIDR_EL1_FT_SHIFT 1 +#define SYS_PMSIDR_EL1_FL_SHIFT 2 +#define SYS_PMSIDR_EL1_ARCHINST_SHIFT 3 +#define SYS_PMSIDR_EL1_LDS_SHIFT 4 +#define SYS_PMSIDR_EL1_ERND_SHIFT 5 +#define SYS_PMSIDR_EL1_INTERVAL_SHIFT 8 +#define SYS_PMSIDR_EL1_INTERVAL_MASK 0xfUL +#define SYS_PMSIDR_EL1_MAXSIZE_SHIFT 12 +#define SYS_PMSIDR_EL1_MAXSIZE_MASK 0xfUL +#define SYS_PMSIDR_EL1_COUNTSIZE_SHIFT 16 +#define SYS_PMSIDR_EL1_COUNTSIZE_MASK 0xfUL + +#define SYS_PMBIDR_EL1 sys_reg(3, 0, 9, 10, 7) +#define SYS_PMBIDR_EL1_ALIGN_SHIFT 0 +#define SYS_PMBIDR_EL1_ALIGN_MASK 0xfU +#define SYS_PMBIDR_EL1_P_SHIFT 4 +#define SYS_PMBIDR_EL1_F_SHIFT 5 + +/* Sampling controls */ +#define SYS_PMSCR_EL1 sys_reg(3, 0, 9, 9, 0) +#define SYS_PMSCR_EL1_E0SPE_SHIFT 0 +#define SYS_PMSCR_EL1_E1SPE_SHIFT 1 +#define SYS_PMSCR_EL1_CX_SHIFT 3 +#define SYS_PMSCR_EL1_PA_SHIFT 4 +#define SYS_PMSCR_EL1_TS_SHIFT 5 +#define SYS_PMSCR_EL1_PCT_SHIFT 6 + +#define SYS_PMSCR_EL2 sys_reg(3, 4, 9, 9, 0) +#define SYS_PMSCR_EL2_E0HSPE_SHIFT 0 +#define SYS_PMSCR_EL2_E2SPE_SHIFT 1 +#define SYS_PMSCR_EL2_CX_SHIFT 3 +#define SYS_PMSCR_EL2_PA_SHIFT 4 +#define SYS_PMSCR_EL2_TS_SHIFT 5 +#define SYS_PMSCR_EL2_PCT_SHIFT 6 + +#define SYS_PMSICR_EL1 sys_reg(3, 0, 9, 9, 2) + +#define SYS_PMSIRR_EL1 sys_reg(3, 0, 9, 9, 3) +#define SYS_PMSIRR_EL1_RND_SHIFT 0 +#define SYS_PMSIRR_EL1_INTERVAL_SHIFT 8 +#define SYS_PMSIRR_EL1_INTERVAL_MASK 0xffffffUL + +/* Filtering controls */ +#define SYS_PMSNEVFR_EL1 sys_reg(3, 0, 9, 9, 1) + +#define SYS_PMSFCR_EL1 sys_reg(3, 0, 9, 9, 4) +#define SYS_PMSFCR_EL1_FE_SHIFT 0 +#define SYS_PMSFCR_EL1_FT_SHIFT 1 +#define SYS_PMSFCR_EL1_FL_SHIFT 2 +#define SYS_PMSFCR_EL1_B_SHIFT 16 +#define SYS_PMSFCR_EL1_LD_SHIFT 17 +#define SYS_PMSFCR_EL1_ST_SHIFT 18 + +#define SYS_PMSEVFR_EL1 sys_reg(3, 0, 9, 9, 5) +#define SYS_PMSEVFR_EL1_RES0_8_2 \ + (GENMASK_ULL(47, 32) | GENMASK_ULL(23, 16) | GENMASK_ULL(11, 8) |\ + BIT_ULL(6) | BIT_ULL(4) | BIT_ULL(2) | BIT_ULL(0)) +#define SYS_PMSEVFR_EL1_RES0_8_3 \ + (SYS_PMSEVFR_EL1_RES0_8_2 & ~(BIT_ULL(18) | BIT_ULL(17) | BIT_ULL(11))) + +#define SYS_PMSLATFR_EL1 sys_reg(3, 0, 9, 9, 6) +#define SYS_PMSLATFR_EL1_MINLAT_SHIFT 0 + +/* Buffer controls */ +#define SYS_PMBLIMITR_EL1 sys_reg(3, 0, 9, 10, 0) +#define SYS_PMBLIMITR_EL1_E_SHIFT 0 +#define SYS_PMBLIMITR_EL1_FM_SHIFT 1 +#define SYS_PMBLIMITR_EL1_FM_MASK 0x3UL +#define SYS_PMBLIMITR_EL1_FM_STOP_IRQ (0 << SYS_PMBLIMITR_EL1_FM_SHIFT) + +#define SYS_PMBPTR_EL1 sys_reg(3, 0, 9, 10, 1) + +/* Buffer error reporting */ +#define SYS_PMBSR_EL1 sys_reg(3, 0, 9, 10, 3) +#define SYS_PMBSR_EL1_COLL_SHIFT 16 +#define SYS_PMBSR_EL1_S_SHIFT 17 +#define SYS_PMBSR_EL1_EA_SHIFT 18 +#define SYS_PMBSR_EL1_DL_SHIFT 19 +#define SYS_PMBSR_EL1_EC_SHIFT 26 +#define SYS_PMBSR_EL1_EC_MASK 0x3fUL + +#define SYS_PMBSR_EL1_EC_BUF (0x0UL << SYS_PMBSR_EL1_EC_SHIFT) +#define SYS_PMBSR_EL1_EC_FAULT_S1 (0x24UL << SYS_PMBSR_EL1_EC_SHIFT) +#define SYS_PMBSR_EL1_EC_FAULT_S2 (0x25UL << SYS_PMBSR_EL1_EC_SHIFT) + +#define SYS_PMBSR_EL1_FAULT_FSC_SHIFT 0 +#define SYS_PMBSR_EL1_FAULT_FSC_MASK 0x3fUL + +#define SYS_PMBSR_EL1_BUF_BSC_SHIFT 0 +#define SYS_PMBSR_EL1_BUF_BSC_MASK 0x3fUL + +#define SYS_PMBSR_EL1_BUF_BSC_FULL (0x1UL << SYS_PMBSR_EL1_BUF_BSC_SHIFT) + +/*** End of Statistical Profiling Extension ***/ + +/* +* TRBE Registers +*/ +#define SYS_TRBLIMITR_EL1 sys_reg(3, 0, 9, 11, 0) +#define SYS_TRBPTR_EL1 sys_reg(3, 0, 9, 11, 1) +#define SYS_TRBBASER_EL1 sys_reg(3, 0, 9, 11, 2) +#define SYS_TRBSR_EL1 sys_reg(3, 0, 9, 11, 3) +#define SYS_TRBMAR_EL1 sys_reg(3, 0, 9, 11, 4) +#define SYS_TRBTRG_EL1 sys_reg(3, 0, 9, 11, 6) +#define SYS_TRBIDR_EL1 sys_reg(3, 0, 9, 11, 7) + +#define TRBLIMITR_LIMIT_MASK GENMASK_ULL(51, 0) +#define TRBLIMITR_LIMIT_SHIFT 12 +#define TRBLIMITR_NVM BIT(5) +#define TRBLIMITR_TRIG_MODE_MASK GENMASK(1, 0) +#define TRBLIMITR_TRIG_MODE_SHIFT 3 +#define TRBLIMITR_FILL_MODE_MASK GENMASK(1, 0) +#define TRBLIMITR_FILL_MODE_SHIFT 1 +#define TRBLIMITR_ENABLE BIT(0) +#define TRBPTR_PTR_MASK GENMASK_ULL(63, 0) +#define TRBPTR_PTR_SHIFT 0 +#define TRBBASER_BASE_MASK GENMASK_ULL(51, 0) +#define TRBBASER_BASE_SHIFT 12 +#define TRBSR_EC_MASK GENMASK(5, 0) +#define TRBSR_EC_SHIFT 26 +#define TRBSR_IRQ BIT(22) +#define TRBSR_TRG BIT(21) +#define TRBSR_WRAP BIT(20) +#define TRBSR_ABORT BIT(18) +#define TRBSR_STOP BIT(17) +#define TRBSR_MSS_MASK GENMASK(15, 0) +#define TRBSR_MSS_SHIFT 0 +#define TRBSR_BSC_MASK GENMASK(5, 0) +#define TRBSR_BSC_SHIFT 0 +#define TRBSR_FSC_MASK GENMASK(5, 0) +#define TRBSR_FSC_SHIFT 0 +#define TRBMAR_SHARE_MASK GENMASK(1, 0) +#define TRBMAR_SHARE_SHIFT 8 +#define TRBMAR_OUTER_MASK GENMASK(3, 0) +#define TRBMAR_OUTER_SHIFT 4 +#define TRBMAR_INNER_MASK GENMASK(3, 0) +#define TRBMAR_INNER_SHIFT 0 +#define TRBTRG_TRG_MASK GENMASK(31, 0) +#define TRBTRG_TRG_SHIFT 0 +#define TRBIDR_FLAG BIT(5) +#define TRBIDR_PROG BIT(4) +#define TRBIDR_ALIGN_MASK GENMASK(3, 0) +#define TRBIDR_ALIGN_SHIFT 0 + +#define SYS_PMINTENSET_EL1 sys_reg(3, 0, 9, 14, 1) +#define SYS_PMINTENCLR_EL1 sys_reg(3, 0, 9, 14, 2) + +#define SYS_PMMIR_EL1 sys_reg(3, 0, 9, 14, 6) + +#define SYS_MAIR_EL1 sys_reg(3, 0, 10, 2, 0) +#define SYS_AMAIR_EL1 sys_reg(3, 0, 10, 3, 0) + +#define SYS_LORSA_EL1 sys_reg(3, 0, 10, 4, 0) +#define SYS_LOREA_EL1 sys_reg(3, 0, 10, 4, 1) +#define SYS_LORN_EL1 sys_reg(3, 0, 10, 4, 2) +#define SYS_LORC_EL1 sys_reg(3, 0, 10, 4, 3) +#define SYS_LORID_EL1 sys_reg(3, 0, 10, 4, 7) + +#define SYS_VBAR_EL1 sys_reg(3, 0, 12, 0, 0) +#define SYS_DISR_EL1 sys_reg(3, 0, 12, 1, 1) + +#define SYS_ICC_IAR0_EL1 sys_reg(3, 0, 12, 8, 0) +#define SYS_ICC_EOIR0_EL1 sys_reg(3, 0, 12, 8, 1) +#define SYS_ICC_HPPIR0_EL1 sys_reg(3, 0, 12, 8, 2) +#define SYS_ICC_BPR0_EL1 sys_reg(3, 0, 12, 8, 3) +#define SYS_ICC_AP0Rn_EL1 (n) sys_reg(3, 0, 12, 8, 4 | n) +#define SYS_ICC_AP0R0_EL1 SYS_ICC_AP0Rn_EL1(0) +#define SYS_ICC_AP0R1_EL1 SYS_ICC_AP0Rn_EL1(1) +#define SYS_ICC_AP0R2_EL1 SYS_ICC_AP0Rn_EL1(2) +#define SYS_ICC_AP0R3_EL1 SYS_ICC_AP0Rn_EL1(3) +#define SYS_ICC_AP1Rn_EL1 (n) sys_reg(3, 0, 12, 9, n) +#define SYS_ICC_AP1R0_EL1 SYS_ICC_AP1Rn_EL1(0) +#define SYS_ICC_AP1R1_EL1 SYS_ICC_AP1Rn_EL1(1) +#define SYS_ICC_AP1R2_EL1 SYS_ICC_AP1Rn_EL1(2) +#define SYS_ICC_AP1R3_EL1 SYS_ICC_AP1Rn_EL1(3) +#define SYS_ICC_DIR_EL1 sys_reg(3, 0, 12, 11, 1) +#define SYS_ICC_RPR_EL1 sys_reg(3, 0, 12, 11, 3) +#define SYS_ICC_SGI1R_EL1 sys_reg(3, 0, 12, 11, 5) +#define SYS_ICC_ASGI1R_EL1 sys_reg(3, 0, 12, 11, 6) +#define SYS_ICC_SGI0R_EL1 sys_reg(3, 0, 12, 11, 7) +#define SYS_ICC_IAR1_EL1 sys_reg(3, 0, 12, 12, 0) +#define SYS_ICC_EOIR1_EL1 sys_reg(3, 0, 12, 12, 1) +#define SYS_ICC_HPPIR1_EL1 sys_reg(3, 0, 12, 12, 2) +#define SYS_ICC_BPR1_EL1 sys_reg(3, 0, 12, 12, 3) +#define SYS_ICC_CTLR_EL1 sys_reg(3, 0, 12, 12, 4) +#define SYS_ICC_SRE_EL1 sys_reg(3, 0, 12, 12, 5) +#define SYS_ICC_IGRPEN0_EL1 sys_reg(3, 0, 12, 12, 6) +#define SYS_ICC_IGRPEN1_EL1 sys_reg(3, 0, 12, 12, 7) + +#define SYS_CONTEXTIDR_EL1 sys_reg(3, 0, 13, 0, 1) +#define SYS_TPIDR_EL1 sys_reg(3, 0, 13, 0, 4) + +#define SYS_SCXTNUM_EL1 sys_reg(3, 0, 13, 0, 7) + +#define SYS_CNTKCTL_EL1 sys_reg(3, 0, 14, 1, 0) + +#define SYS_CCSIDR_EL1 sys_reg(3, 1, 0, 0, 0) +#define SYS_CLIDR_EL1 sys_reg(3, 1, 0, 0, 1) +#define SYS_GMID_EL1 sys_reg(3, 1, 0, 0, 4) +#define SYS_AIDR_EL1 sys_reg(3, 1, 0, 0, 7) + +#define SYS_CSSELR_EL1 sys_reg(3, 2, 0, 0, 0) + +#define SYS_CTR_EL0 sys_reg(3, 3, 0, 0, 1) +#define SYS_DCZID_EL0 sys_reg(3, 3, 0, 0, 7) + +#define SYS_RNDR_EL0 sys_reg(3, 3, 2, 4, 0) +#define SYS_RNDRRS_EL0 sys_reg(3, 3, 2, 4, 1) + +#define SYS_PMCR_EL0 sys_reg(3, 3, 9, 12, 0) +#define SYS_PMCNTENSET_EL0 sys_reg(3, 3, 9, 12, 1) +#define SYS_PMCNTENCLR_EL0 sys_reg(3, 3, 9, 12, 2) +#define SYS_PMOVSCLR_EL0 sys_reg(3, 3, 9, 12, 3) +#define SYS_PMSWINC_EL0 sys_reg(3, 3, 9, 12, 4) +#define SYS_PMSELR_EL0 sys_reg(3, 3, 9, 12, 5) +#define SYS_PMCEID0_EL0 sys_reg(3, 3, 9, 12, 6) +#define SYS_PMCEID1_EL0 sys_reg(3, 3, 9, 12, 7) +#define SYS_PMCCNTR_EL0 sys_reg(3, 3, 9, 13, 0) +#define SYS_PMXEVTYPER_EL0 sys_reg(3, 3, 9, 13, 1) +#define SYS_PMXEVCNTR_EL0 sys_reg(3, 3, 9, 13, 2) +#define SYS_PMUSERENR_EL0 sys_reg(3, 3, 9, 14, 0) +#define SYS_PMOVSSET_EL0 sys_reg(3, 3, 9, 14, 3) + +#define SYS_TPIDR_EL0 sys_reg(3, 3, 13, 0, 2) +#define SYS_TPIDRRO_EL0 sys_reg(3, 3, 13, 0, 3) + +#define SYS_SCXTNUM_EL0 sys_reg(3, 3, 13, 0, 7) + +/* Definitions for system register interface to AMU for ARMv8.4 onwards */ +#define SYS_AM_EL0 (crm, op2) sys_reg(3, 3, 13, (crm), (op2)) +#define SYS_AMCR_EL0 SYS_AM_EL0(2, 0) +#define SYS_AMCFGR_EL0 SYS_AM_EL0(2, 1) +#define SYS_AMCGCR_EL0 SYS_AM_EL0(2, 2) +#define SYS_AMUSERENR_EL0 SYS_AM_EL0(2, 3) +#define SYS_AMCNTENCLR0_EL0 SYS_AM_EL0(2, 4) +#define SYS_AMCNTENSET0_EL0 SYS_AM_EL0(2, 5) +#define SYS_AMCNTENCLR1_EL0 SYS_AM_EL0(3, 0) +#define SYS_AMCNTENSET1_EL0 SYS_AM_EL0(3, 1) + +/* +* Group 0 of activity monitors (architected): +* op0 op1 CRn CRm op2 +* Counter: 11 011 1101 010:n<3> n<2:0> +* Type: 11 011 1101 011:n<3> n<2:0> +* n: 0-15 +* +* Group 1 of activity monitors (auxiliary): +* op0 op1 CRn CRm op2 +* Counter: 11 011 1101 110:n<3> n<2:0> +* Type: 11 011 1101 111:n<3> n<2:0> +* n: 0-15 +*/ + +#define SYS_AMEVCNTR0_EL0 (n) SYS_AM_EL0(4 + ((n) >> 3), (n) & 7) +#define SYS_AMEVTYPER0_EL0 (n) SYS_AM_EL0(6 + ((n) >> 3), (n) & 7) +#define SYS_AMEVCNTR1_EL0 (n) SYS_AM_EL0(12 + ((n) >> 3), (n) & 7) +#define SYS_AMEVTYPER1_EL0 (n) SYS_AM_EL0(14 + ((n) >> 3), (n) & 7) + +/* AMU v1: Fixed (architecturally defined) activity monitors */ +#define SYS_AMEVCNTR0_CORE_EL0 SYS_AMEVCNTR0_EL0(0) +#define SYS_AMEVCNTR0_CONST_EL0 SYS_AMEVCNTR0_EL0(1) +#define SYS_AMEVCNTR0_INST_RET_EL0 SYS_AMEVCNTR0_EL0(2) +#define SYS_AMEVCNTR0_MEM_STALL SYS_AMEVCNTR0_EL0(3) + +#define SYS_CNTFRQ_EL0 sys_reg(3, 3, 14, 0, 0) + +#define SYS_CNTP_TVAL_EL0 sys_reg(3, 3, 14, 2, 0) +#define SYS_CNTP_CTL_EL0 sys_reg(3, 3, 14, 2, 1) +#define SYS_CNTP_CVAL_EL0 sys_reg(3, 3, 14, 2, 2) + +#define SYS_CNTV_CTL_EL0 sys_reg(3, 3, 14, 3, 1) +#define SYS_CNTV_CVAL_EL0 sys_reg(3, 3, 14, 3, 2) + +#define SYS_AARCH32_CNTP_TVAL sys_reg(0, 0, 14, 2, 0) +#define SYS_AARCH32_CNTP_CTL sys_reg(0, 0, 14, 2, 1) +#define SYS_AARCH32_CNTP_CVAL sys_reg(0, 2, 0, 14, 0) + +#define __PMEV_op2 (n) ((n) & 0x7) +#define __CNTR_CRm (n) (0x8 | (((n) >> 3) & 0x3)) +#define SYS_PMEVCNTRn_EL0 (n) sys_reg(3, 3, 14, __CNTR_CRm(n), __PMEV_op2(n)) +#define __TYPER_CRm (n) (0xc | (((n) >> 3) & 0x3)) +#define SYS_PMEVTYPERn_EL0 (n) sys_reg(3, 3, 14, __TYPER_CRm(n), __PMEV_op2(n)) + +#define SYS_PMCCFILTR_EL0 sys_reg(3, 3, 14, 15, 7) + +#define SYS_SCTLR_EL2 sys_reg(3, 4, 1, 0, 0) +#define SYS_HFGRTR_EL2 sys_reg(3, 4, 1, 1, 4) +#define SYS_HFGWTR_EL2 sys_reg(3, 4, 1, 1, 5) +#define SYS_HFGITR_EL2 sys_reg(3, 4, 1, 1, 6) +#define SYS_ZCR_EL2 sys_reg(3, 4, 1, 2, 0) +#define SYS_TRFCR_EL2 sys_reg(3, 4, 1, 2, 1) +#define SYS_DACR32_EL2 sys_reg(3, 4, 3, 0, 0) +#define SYS_HDFGRTR_EL2 sys_reg(3, 4, 3, 1, 4) +#define SYS_HDFGWTR_EL2 sys_reg(3, 4, 3, 1, 5) +#define SYS_HAFGRTR_EL2 sys_reg(3, 4, 3, 1, 6) +#define SYS_SPSR_EL2 sys_reg(3, 4, 4, 0, 0) +#define SYS_ELR_EL2 sys_reg(3, 4, 4, 0, 1) +#define SYS_IFSR32_EL2 sys_reg(3, 4, 5, 0, 1) +#define SYS_ESR_EL2 sys_reg(3, 4, 5, 2, 0) +#define SYS_VSESR_EL2 sys_reg(3, 4, 5, 2, 3) +#define SYS_FPEXC32_EL2 sys_reg(3, 4, 5, 3, 0) +#define SYS_TFSR_EL2 sys_reg(3, 4, 5, 6, 0) +#define SYS_FAR_EL2 sys_reg(3, 4, 6, 0, 0) + +#define SYS_VDISR_EL2 sys_reg(3, 4, 12, 1, 1) +#define __SYS__AP0Rx_EL2 (x) sys_reg(3, 4, 12, 8, x) +#define SYS_ICH_AP0R0_EL2 __SYS__AP0Rx_EL2(0) +#define SYS_ICH_AP0R1_EL2 __SYS__AP0Rx_EL2(1) +#define SYS_ICH_AP0R2_EL2 __SYS__AP0Rx_EL2(2) +#define SYS_ICH_AP0R3_EL2 __SYS__AP0Rx_EL2(3) + +#define __SYS__AP1Rx_EL2 (x) sys_reg(3, 4, 12, 9, x) +#define SYS_ICH_AP1R0_EL2 __SYS__AP1Rx_EL2(0) +#define SYS_ICH_AP1R1_EL2 __SYS__AP1Rx_EL2(1) +#define SYS_ICH_AP1R2_EL2 __SYS__AP1Rx_EL2(2) +#define SYS_ICH_AP1R3_EL2 __SYS__AP1Rx_EL2(3) + +#define SYS_ICH_VSEIR_EL2 sys_reg(3, 4, 12, 9, 4) +#define SYS_ICC_SRE_EL2 sys_reg(3, 4, 12, 9, 5) +#define SYS_ICH_HCR_EL2 sys_reg(3, 4, 12, 11, 0) +#define SYS_ICH_VTR_EL2 sys_reg(3, 4, 12, 11, 1) +#define SYS_ICH_MISR_EL2 sys_reg(3, 4, 12, 11, 2) +#define SYS_ICH_EISR_EL2 sys_reg(3, 4, 12, 11, 3) +#define SYS_ICH_ELRSR_EL2 sys_reg(3, 4, 12, 11, 5) +#define SYS_ICH_VMCR_EL2 sys_reg(3, 4, 12, 11, 7) + +#define __SYS__LR0_EL2 (x) sys_reg(3, 4, 12, 12, x) +#define SYS_ICH_LR0_EL2 __SYS__LR0_EL2(0) +#define SYS_ICH_LR1_EL2 __SYS__LR0_EL2(1) +#define SYS_ICH_LR2_EL2 __SYS__LR0_EL2(2) +#define SYS_ICH_LR3_EL2 __SYS__LR0_EL2(3) +#define SYS_ICH_LR4_EL2 __SYS__LR0_EL2(4) +#define SYS_ICH_LR5_EL2 __SYS__LR0_EL2(5) +#define SYS_ICH_LR6_EL2 __SYS__LR0_EL2(6) +#define SYS_ICH_LR7_EL2 __SYS__LR0_EL2(7) + +#define __SYS__LR8_EL2 (x) sys_reg(3, 4, 12, 13, x) +#define SYS_ICH_LR8_EL2 __SYS__LR8_EL2(0) +#define SYS_ICH_LR9_EL2 __SYS__LR8_EL2(1) +#define SYS_ICH_LR10_EL2 __SYS__LR8_EL2(2) +#define SYS_ICH_LR11_EL2 __SYS__LR8_EL2(3) +#define SYS_ICH_LR12_EL2 __SYS__LR8_EL2(4) +#define SYS_ICH_LR13_EL2 __SYS__LR8_EL2(5) +#define SYS_ICH_LR14_EL2 __SYS__LR8_EL2(6) +#define SYS_ICH_LR15_EL2 __SYS__LR8_EL2(7) + +/* VHE encodings for architectural EL0/1 system registers */ +#define SYS_SCTLR_EL12 sys_reg(3, 5, 1, 0, 0) +#define SYS_CPACR_EL12 sys_reg(3, 5, 1, 0, 2) +#define SYS_ZCR_EL12 sys_reg(3, 5, 1, 2, 0) +#define SYS_TTBR0_EL12 sys_reg(3, 5, 2, 0, 0) +#define SYS_TTBR1_EL12 sys_reg(3, 5, 2, 0, 1) +#define SYS_TCR_EL12 sys_reg(3, 5, 2, 0, 2) +#define SYS_SPSR_EL12 sys_reg(3, 5, 4, 0, 0) +#define SYS_ELR_EL12 sys_reg(3, 5, 4, 0, 1) +#define SYS_AFSR0_EL12 sys_reg(3, 5, 5, 1, 0) +#define SYS_AFSR1_EL12 sys_reg(3, 5, 5, 1, 1) +#define SYS_ESR_EL12 sys_reg(3, 5, 5, 2, 0) +#define SYS_TFSR_EL12 sys_reg(3, 5, 5, 6, 0) +#define SYS_FAR_EL12 sys_reg(3, 5, 6, 0, 0) +#define SYS_MAIR_EL12 sys_reg(3, 5, 10, 2, 0) +#define SYS_AMAIR_EL12 sys_reg(3, 5, 10, 3, 0) +#define SYS_VBAR_EL12 sys_reg(3, 5, 12, 0, 0) +#define SYS_CONTEXTIDR_EL12 sys_reg(3, 5, 13, 0, 1) +#define SYS_CNTKCTL_EL12 sys_reg(3, 5, 14, 1, 0) +#define SYS_CNTP_TVAL_EL02 sys_reg(3, 5, 14, 2, 0) +#define SYS_CNTP_CTL_EL02 sys_reg(3, 5, 14, 2, 1) +#define SYS_CNTP_CVAL_EL02 sys_reg(3, 5, 14, 2, 2) +#define SYS_CNTV_TVAL_EL02 sys_reg(3, 5, 14, 3, 0) +#define SYS_CNTV_CTL_EL02 sys_reg(3, 5, 14, 3, 1) +#define SYS_CNTV_CVAL_EL02 sys_reg(3, 5, 14, 3, 2) + +/* Common SCTLR_ELx flags. */ +#define SCTLR_ELx_DSSBS (BIT(44)) +#define SCTLR_ELx_ATA (BIT(43)) + +#define SCTLR_ELx_TCF_SHIFT 40 +#define SCTLR_ELx_TCF_NONE (UL(0x0) << SCTLR_ELx_TCF_SHIFT) +#define SCTLR_ELx_TCF_SYNC (UL(0x1) << SCTLR_ELx_TCF_SHIFT) +#define SCTLR_ELx_TCF_ASYNC (UL(0x2) << SCTLR_ELx_TCF_SHIFT) +#define SCTLR_ELx_TCF_MASK (UL(0x3) << SCTLR_ELx_TCF_SHIFT) + +#define SCTLR_ELx_ENIA_SHIFT 31 + +#define SCTLR_ELx_ITFSB (BIT(37)) +#define SCTLR_ELx_ENIA (BIT(SCTLR_ELx_ENIA_SHIFT)) +#define SCTLR_ELx_ENIB (BIT(30)) +#define SCTLR_ELx_ENDA (BIT(27)) +#define SCTLR_ELx_EE (BIT(25)) +#define SCTLR_ELx_IESB (BIT(21)) +#define SCTLR_ELx_WXN (BIT(19)) +#define SCTLR_ELx_ENDB (BIT(13)) +#define SCTLR_ELx_I (BIT(12)) +#define SCTLR_ELx_SA (BIT(3)) +#define SCTLR_ELx_C (BIT(2)) +#define SCTLR_ELx_A (BIT(1)) +#define SCTLR_ELx_M (BIT(0)) + +/* SCTLR_EL2 specific flags. */ +#define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \ + (BIT(18)) | (BIT(22)) | (BIT(23)) | (BIT(28)) | \ + (BIT(29))) + +#ifdef CONFIG_CPU_BIG_ENDIAN +#define ENDIAN_SET_EL2 SCTLR_ELx_EE +#else +#define ENDIAN_SET_EL2 0 +#endif + +#define INIT_SCTLR_EL2_MMU_ON \ + (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_ELx_I | \ + SCTLR_ELx_IESB | SCTLR_ELx_WXN | ENDIAN_SET_EL2 | \ + SCTLR_ELx_ITFSB | SCTLR_EL2_RES1) + +#define INIT_SCTLR_EL2_MMU_OFF \ + (SCTLR_EL2_RES1 | ENDIAN_SET_EL2) + +/* SCTLR_EL1 specific flags. */ +#define SCTLR_EL1_EPAN (BIT(57)) +#define SCTLR_EL1_ATA0 (BIT(42)) + +#define SCTLR_EL1_TCF0_SHIFT 38 +#define SCTLR_EL1_TCF0_NONE (UL(0x0) << SCTLR_EL1_TCF0_SHIFT) +#define SCTLR_EL1_TCF0_SYNC (UL(0x1) << SCTLR_EL1_TCF0_SHIFT) +#define SCTLR_EL1_TCF0_ASYNC (UL(0x2) << SCTLR_EL1_TCF0_SHIFT) +#define SCTLR_EL1_TCF0_MASK (UL(0x3) << SCTLR_EL1_TCF0_SHIFT) + +#define SCTLR_EL1_BT1 (BIT(36)) +#define SCTLR_EL1_BT0 (BIT(35)) +#define SCTLR_EL1_UCI (BIT(26)) +#define SCTLR_EL1_E0E (BIT(24)) +#define SCTLR_EL1_SPAN (BIT(23)) +#define SCTLR_EL1_NTWE (BIT(18)) +#define SCTLR_EL1_NTWI (BIT(16)) +#define SCTLR_EL1_UCT (BIT(15)) +#define SCTLR_EL1_DZE (BIT(14)) +#define SCTLR_EL1_UMA (BIT(9)) +#define SCTLR_EL1_SED (BIT(8)) +#define SCTLR_EL1_ITD (BIT(7)) +#define SCTLR_EL1_CP15BEN (BIT(5)) +#define SCTLR_EL1_SA0 (BIT(4)) + +#define SCTLR_EL1_RES1 ((BIT(11)) | (BIT(20)) | (BIT(22)) | (BIT(28)) | \ + (BIT(29))) + +#ifdef CONFIG_CPU_BIG_ENDIAN +#define ENDIAN_SET_EL1 (SCTLR_EL1_E0E | SCTLR_ELx_EE) +#else +#define ENDIAN_SET_EL1 0 +#endif + +#define INIT_SCTLR_EL1_MMU_OFF \ + (ENDIAN_SET_EL1 | SCTLR_EL1_RES1) + +#define INIT_SCTLR_EL1_MMU_ON \ + (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_EL1_SA0 | \ + SCTLR_EL1_SED | SCTLR_ELx_I | SCTLR_EL1_DZE | SCTLR_EL1_UCT | \ + SCTLR_EL1_NTWE | SCTLR_ELx_IESB | SCTLR_EL1_SPAN | SCTLR_ELx_ITFSB | \ + SCTLR_ELx_ATA | SCTLR_EL1_ATA0 | ENDIAN_SET_EL1 | SCTLR_EL1_UCI | \ + SCTLR_EL1_EPAN | SCTLR_EL1_RES1) + +/* MAIR_ELx memory attributes (used by Linux) */ +#define MAIR_ATTR_DEVICE_nGnRnE UL(0x00) +#define MAIR_ATTR_DEVICE_nGnRE UL(0x04) +#define MAIR_ATTR_NORMAL_NC UL(0x44) +#define MAIR_ATTR_NORMAL_TAGGED UL(0xf0) +#define MAIR_ATTR_NORMAL UL(0xff) +#define MAIR_ATTR_MASK UL(0xff) + +/* Position the attr at the correct index */ +#define MAIR_ATTRIDX (attr, idx) ((attr) << ((idx) * 8)) + +/* id_aa64isar0 */ +#define ID_AA64ISAR0_RNDR_SHIFT 60 +#define ID_AA64ISAR0_TLB_SHIFT 56 +#define ID_AA64ISAR0_TS_SHIFT 52 +#define ID_AA64ISAR0_FHM_SHIFT 48 +#define ID_AA64ISAR0_DP_SHIFT 44 +#define ID_AA64ISAR0_SM4_SHIFT 40 +#define ID_AA64ISAR0_SM3_SHIFT 36 +#define ID_AA64ISAR0_SHA3_SHIFT 32 +#define ID_AA64ISAR0_RDM_SHIFT 28 +#define ID_AA64ISAR0_ATOMICS_SHIFT 20 +#define ID_AA64ISAR0_CRC32_SHIFT 16 +#define ID_AA64ISAR0_SHA2_SHIFT 12 +#define ID_AA64ISAR0_SHA1_SHIFT 8 +#define ID_AA64ISAR0_AES_SHIFT 4 + +#define ID_AA64ISAR0_TLB_RANGE_NI 0x0 +#define ID_AA64ISAR0_TLB_RANGE 0x2 + +/* id_aa64isar1 */ +#define ID_AA64ISAR1_I8MM_SHIFT 52 +#define ID_AA64ISAR1_DGH_SHIFT 48 +#define ID_AA64ISAR1_BF16_SHIFT 44 +#define ID_AA64ISAR1_SPECRES_SHIFT 40 +#define ID_AA64ISAR1_SB_SHIFT 36 +#define ID_AA64ISAR1_FRINTTS_SHIFT 32 +#define ID_AA64ISAR1_GPI_SHIFT 28 +#define ID_AA64ISAR1_GPA_SHIFT 24 +#define ID_AA64ISAR1_LRCPC_SHIFT 20 +#define ID_AA64ISAR1_FCMA_SHIFT 16 +#define ID_AA64ISAR1_JSCVT_SHIFT 12 +#define ID_AA64ISAR1_API_SHIFT 8 +#define ID_AA64ISAR1_APA_SHIFT 4 +#define ID_AA64ISAR1_DPB_SHIFT 0 + +#define ID_AA64ISAR1_APA_NI 0x0 +#define ID_AA64ISAR1_APA_ARCHITECTED 0x1 +#define ID_AA64ISAR1_APA_ARCH_EPAC 0x2 +#define ID_AA64ISAR1_APA_ARCH_EPAC2 0x3 +#define ID_AA64ISAR1_APA_ARCH_EPAC2_FPAC 0x4 +#define ID_AA64ISAR1_APA_ARCH_EPAC2_FPAC_CMB 0x5 +#define ID_AA64ISAR1_API_NI 0x0 +#define ID_AA64ISAR1_API_IMP_DEF 0x1 +#define ID_AA64ISAR1_API_IMP_DEF_EPAC 0x2 +#define ID_AA64ISAR1_API_IMP_DEF_EPAC2 0x3 +#define ID_AA64ISAR1_API_IMP_DEF_EPAC2_FPAC 0x4 +#define ID_AA64ISAR1_API_IMP_DEF_EPAC2_FPAC_CMB 0x5 +#define ID_AA64ISAR1_GPA_NI 0x0 +#define ID_AA64ISAR1_GPA_ARCHITECTED 0x1 +#define ID_AA64ISAR1_GPI_NI 0x0 +#define ID_AA64ISAR1_GPI_IMP_DEF 0x1 + +/* id_aa64pfr0 */ +#define ID_AA64PFR0_CSV3_SHIFT 60 +#define ID_AA64PFR0_CSV2_SHIFT 56 +#define ID_AA64PFR0_DIT_SHIFT 48 +#define ID_AA64PFR0_AMU_SHIFT 44 +#define ID_AA64PFR0_MPAM_SHIFT 40 +#define ID_AA64PFR0_SEL2_SHIFT 36 +#define ID_AA64PFR0_SVE_SHIFT 32 +#define ID_AA64PFR0_RAS_SHIFT 28 +#define ID_AA64PFR0_GIC_SHIFT 24 +#define ID_AA64PFR0_ASIMD_SHIFT 20 +#define ID_AA64PFR0_FP_SHIFT 16 +#define ID_AA64PFR0_EL3_SHIFT 12 +#define ID_AA64PFR0_EL2_SHIFT 8 +#define ID_AA64PFR0_EL1_SHIFT 4 +#define ID_AA64PFR0_EL0_SHIFT 0 + +#define ID_AA64PFR0_AMU 0x1 +#define ID_AA64PFR0_SVE 0x1 +#define ID_AA64PFR0_RAS_V1 0x1 +#define ID_AA64PFR0_RAS_V1P1 0x2 +#define ID_AA64PFR0_FP_NI 0xf +#define ID_AA64PFR0_FP_SUPPORTED 0x0 +#define ID_AA64PFR0_ASIMD_NI 0xf +#define ID_AA64PFR0_ASIMD_SUPPORTED 0x0 +#define ID_AA64PFR0_ELx_64BIT_ONLY 0x1 +#define ID_AA64PFR0_ELx_32BIT_64BIT 0x2 + +/* id_aa64pfr1 */ +#define ID_AA64PFR1_MPAMFRAC_SHIFT 16 +#define ID_AA64PFR1_RASFRAC_SHIFT 12 +#define ID_AA64PFR1_MTE_SHIFT 8 +#define ID_AA64PFR1_SSBS_SHIFT 4 +#define ID_AA64PFR1_BT_SHIFT 0 + +#define ID_AA64PFR1_SSBS_PSTATE_NI 0 +#define ID_AA64PFR1_SSBS_PSTATE_ONLY 1 +#define ID_AA64PFR1_SSBS_PSTATE_INSNS 2 +#define ID_AA64PFR1_BT_BTI 0x1 + +#define ID_AA64PFR1_MTE_NI 0x0 +#define ID_AA64PFR1_MTE_EL0 0x1 +#define ID_AA64PFR1_MTE 0x2 + +/* id_aa64zfr0 */ +#define ID_AA64ZFR0_F64MM_SHIFT 56 +#define ID_AA64ZFR0_F32MM_SHIFT 52 +#define ID_AA64ZFR0_I8MM_SHIFT 44 +#define ID_AA64ZFR0_SM4_SHIFT 40 +#define ID_AA64ZFR0_SHA3_SHIFT 32 +#define ID_AA64ZFR0_BF16_SHIFT 20 +#define ID_AA64ZFR0_BITPERM_SHIFT 16 +#define ID_AA64ZFR0_AES_SHIFT 4 +#define ID_AA64ZFR0_SVEVER_SHIFT 0 + +#define ID_AA64ZFR0_F64MM 0x1 +#define ID_AA64ZFR0_F32MM 0x1 +#define ID_AA64ZFR0_I8MM 0x1 +#define ID_AA64ZFR0_BF16 0x1 +#define ID_AA64ZFR0_SM4 0x1 +#define ID_AA64ZFR0_SHA3 0x1 +#define ID_AA64ZFR0_BITPERM 0x1 +#define ID_AA64ZFR0_AES 0x1 +#define ID_AA64ZFR0_AES_PMULL 0x2 +#define ID_AA64ZFR0_SVEVER_SVE2 0x1 + +/* id_aa64mmfr0 */ +#define ID_AA64MMFR0_ECV_SHIFT 60 +#define ID_AA64MMFR0_FGT_SHIFT 56 +#define ID_AA64MMFR0_EXS_SHIFT 44 +#define ID_AA64MMFR0_TGRAN4_2_SHIFT 40 +#define ID_AA64MMFR0_TGRAN64_2_SHIFT 36 +#define ID_AA64MMFR0_TGRAN16_2_SHIFT 32 +#define ID_AA64MMFR0_TGRAN4_SHIFT 28 +#define ID_AA64MMFR0_TGRAN64_SHIFT 24 +#define ID_AA64MMFR0_TGRAN16_SHIFT 20 +#define ID_AA64MMFR0_BIGENDEL0_SHIFT 16 +#define ID_AA64MMFR0_SNSMEM_SHIFT 12 +#define ID_AA64MMFR0_BIGENDEL_SHIFT 8 +#define ID_AA64MMFR0_ASID_SHIFT 4 +#define ID_AA64MMFR0_PARANGE_SHIFT 0 + +#define ID_AA64MMFR0_ASID_8 0x0 +#define ID_AA64MMFR0_ASID_16 0x2 + +#define ID_AA64MMFR0_TGRAN4_NI 0xf +#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN 0x0 +#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX 0x7 +#define ID_AA64MMFR0_TGRAN64_NI 0xf +#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN 0x0 +#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX 0x7 +#define ID_AA64MMFR0_TGRAN16_NI 0x0 +#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN 0x1 +#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX 0xf + +#define ID_AA64MMFR0_PARANGE_32 0x0 +#define ID_AA64MMFR0_PARANGE_36 0x1 +#define ID_AA64MMFR0_PARANGE_40 0x2 +#define ID_AA64MMFR0_PARANGE_42 0x3 +#define ID_AA64MMFR0_PARANGE_44 0x4 +#define ID_AA64MMFR0_PARANGE_48 0x5 +#define ID_AA64MMFR0_PARANGE_52 0x6 + +#define ARM64_MIN_PARANGE_BITS 32 + +#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_DEFAULT 0x0 +#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_NONE 0x1 +#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MIN 0x2 +#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MAX 0x7 + +#ifdef CONFIG_ARM64_PA_BITS_52 +#define ID_AA64MMFR0_PARANGE_MAX ID_AA64MMFR0_PARANGE_52 +#else +#define ID_AA64MMFR0_PARANGE_MAX ID_AA64MMFR0_PARANGE_48 +#endif + +/* id_aa64mmfr1 */ +#define ID_AA64MMFR1_ETS_SHIFT 36 +#define ID_AA64MMFR1_TWED_SHIFT 32 +#define ID_AA64MMFR1_XNX_SHIFT 28 +#define ID_AA64MMFR1_SPECSEI_SHIFT 24 +#define ID_AA64MMFR1_PAN_SHIFT 20 +#define ID_AA64MMFR1_LOR_SHIFT 16 +#define ID_AA64MMFR1_HPD_SHIFT 12 +#define ID_AA64MMFR1_VHE_SHIFT 8 +#define ID_AA64MMFR1_VMIDBITS_SHIFT 4 +#define ID_AA64MMFR1_HADBS_SHIFT 0 + +#define ID_AA64MMFR1_VMIDBITS_8 0 +#define ID_AA64MMFR1_VMIDBITS_16 2 + +/* id_aa64mmfr2 */ +#define ID_AA64MMFR2_E0PD_SHIFT 60 +#define ID_AA64MMFR2_EVT_SHIFT 56 +#define ID_AA64MMFR2_BBM_SHIFT 52 +#define ID_AA64MMFR2_TTL_SHIFT 48 +#define ID_AA64MMFR2_FWB_SHIFT 40 +#define ID_AA64MMFR2_IDS_SHIFT 36 +#define ID_AA64MMFR2_AT_SHIFT 32 +#define ID_AA64MMFR2_ST_SHIFT 28 +#define ID_AA64MMFR2_NV_SHIFT 24 +#define ID_AA64MMFR2_CCIDX_SHIFT 20 +#define ID_AA64MMFR2_LVA_SHIFT 16 +#define ID_AA64MMFR2_IESB_SHIFT 12 +#define ID_AA64MMFR2_LSM_SHIFT 8 +#define ID_AA64MMFR2_UAO_SHIFT 4 +#define ID_AA64MMFR2_CNP_SHIFT 0 + +/* id_aa64dfr0 */ +#define ID_AA64DFR0_MTPMU_SHIFT 48 +#define ID_AA64DFR0_TRBE_SHIFT 44 +#define ID_AA64DFR0_TRACE_FILT_SHIFT 40 +#define ID_AA64DFR0_DOUBLELOCK_SHIFT 36 +#define ID_AA64DFR0_PMSVER_SHIFT 32 +#define ID_AA64DFR0_CTX_CMPS_SHIFT 28 +#define ID_AA64DFR0_WRPS_SHIFT 20 +#define ID_AA64DFR0_BRPS_SHIFT 12 +#define ID_AA64DFR0_PMUVER_SHIFT 8 +#define ID_AA64DFR0_TRACEVER_SHIFT 4 +#define ID_AA64DFR0_DEBUGVER_SHIFT 0 + +#define ID_AA64DFR0_PMUVER_8_0 0x1 +#define ID_AA64DFR0_PMUVER_8_1 0x4 +#define ID_AA64DFR0_PMUVER_8_4 0x5 +#define ID_AA64DFR0_PMUVER_8_5 0x6 +#define ID_AA64DFR0_PMUVER_IMP_DEF 0xf + +#define ID_AA64DFR0_PMSVER_8_2 0x1 +#define ID_AA64DFR0_PMSVER_8_3 0x2 + +#define ID_DFR0_PERFMON_SHIFT 24 + +#define ID_DFR0_PERFMON_8_0 0x3 +#define ID_DFR0_PERFMON_8_1 0x4 +#define ID_DFR0_PERFMON_8_4 0x5 +#define ID_DFR0_PERFMON_8_5 0x6 + +#define ID_ISAR4_SWP_FRAC_SHIFT 28 +#define ID_ISAR4_PSR_M_SHIFT 24 +#define ID_ISAR4_SYNCH_PRIM_FRAC_SHIFT 20 +#define ID_ISAR4_BARRIER_SHIFT 16 +#define ID_ISAR4_SMC_SHIFT 12 +#define ID_ISAR4_WRITEBACK_SHIFT 8 +#define ID_ISAR4_WITHSHIFTS_SHIFT 4 +#define ID_ISAR4_UNPRIV_SHIFT 0 + +#define ID_DFR1_MTPMU_SHIFT 0 + +#define ID_ISAR0_DIVIDE_SHIFT 24 +#define ID_ISAR0_DEBUG_SHIFT 20 +#define ID_ISAR0_COPROC_SHIFT 16 +#define ID_ISAR0_CMPBRANCH_SHIFT 12 +#define ID_ISAR0_BITFIELD_SHIFT 8 +#define ID_ISAR0_BITCOUNT_SHIFT 4 +#define ID_ISAR0_SWAP_SHIFT 0 + +#define ID_ISAR5_RDM_SHIFT 24 +#define ID_ISAR5_CRC32_SHIFT 16 +#define ID_ISAR5_SHA2_SHIFT 12 +#define ID_ISAR5_SHA1_SHIFT 8 +#define ID_ISAR5_AES_SHIFT 4 +#define ID_ISAR5_SEVL_SHIFT 0 + +#define ID_ISAR6_I8MM_SHIFT 24 +#define ID_ISAR6_BF16_SHIFT 20 +#define ID_ISAR6_SPECRES_SHIFT 16 +#define ID_ISAR6_SB_SHIFT 12 +#define ID_ISAR6_FHM_SHIFT 8 +#define ID_ISAR6_DP_SHIFT 4 +#define ID_ISAR6_JSCVT_SHIFT 0 + +#define ID_MMFR0_INNERSHR_SHIFT 28 +#define ID_MMFR0_FCSE_SHIFT 24 +#define ID_MMFR0_AUXREG_SHIFT 20 +#define ID_MMFR0_TCM_SHIFT 16 +#define ID_MMFR0_SHARELVL_SHIFT 12 +#define ID_MMFR0_OUTERSHR_SHIFT 8 +#define ID_MMFR0_PMSA_SHIFT 4 +#define ID_MMFR0_VMSA_SHIFT 0 + +#define ID_MMFR4_EVT_SHIFT 28 +#define ID_MMFR4_CCIDX_SHIFT 24 +#define ID_MMFR4_LSM_SHIFT 20 +#define ID_MMFR4_HPDS_SHIFT 16 +#define ID_MMFR4_CNP_SHIFT 12 +#define ID_MMFR4_XNX_SHIFT 8 +#define ID_MMFR4_AC2_SHIFT 4 +#define ID_MMFR4_SPECSEI_SHIFT 0 + +#define ID_MMFR5_ETS_SHIFT 0 + +#define ID_PFR0_DIT_SHIFT 24 +#define ID_PFR0_CSV2_SHIFT 16 +#define ID_PFR0_STATE3_SHIFT 12 +#define ID_PFR0_STATE2_SHIFT 8 +#define ID_PFR0_STATE1_SHIFT 4 +#define ID_PFR0_STATE0_SHIFT 0 + +#define ID_DFR0_PERFMON_SHIFT 24 +#define ID_DFR0_MPROFDBG_SHIFT 20 +#define ID_DFR0_MMAPTRC_SHIFT 16 +#define ID_DFR0_COPTRC_SHIFT 12 +#define ID_DFR0_MMAPDBG_SHIFT 8 +#define ID_DFR0_COPSDBG_SHIFT 4 +#define ID_DFR0_COPDBG_SHIFT 0 + +#define ID_PFR2_SSBS_SHIFT 4 +#define ID_PFR2_CSV3_SHIFT 0 + +#define MVFR0_FPROUND_SHIFT 28 +#define MVFR0_FPSHVEC_SHIFT 24 +#define MVFR0_FPSQRT_SHIFT 20 +#define MVFR0_FPDIVIDE_SHIFT 16 +#define MVFR0_FPTRAP_SHIFT 12 +#define MVFR0_FPDP_SHIFT 8 +#define MVFR0_FPSP_SHIFT 4 +#define MVFR0_SIMD_SHIFT 0 + +#define MVFR1_SIMDFMAC_SHIFT 28 +#define MVFR1_FPHP_SHIFT 24 +#define MVFR1_SIMDHP_SHIFT 20 +#define MVFR1_SIMDSP_SHIFT 16 +#define MVFR1_SIMDINT_SHIFT 12 +#define MVFR1_SIMDLS_SHIFT 8 +#define MVFR1_FPDNAN_SHIFT 4 +#define MVFR1_FPFTZ_SHIFT 0 + +#define ID_PFR1_GIC_SHIFT 28 +#define ID_PFR1_VIRT_FRAC_SHIFT 24 +#define ID_PFR1_SEC_FRAC_SHIFT 20 +#define ID_PFR1_GENTIMER_SHIFT 16 +#define ID_PFR1_VIRTUALIZATION_SHIFT 12 +#define ID_PFR1_MPROGMOD_SHIFT 8 +#define ID_PFR1_SECURITY_SHIFT 4 +#define ID_PFR1_PROGMOD_SHIFT 0 + +#if defined(CONFIG_ARM64_4K_PAGES ) +#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN4_SHIFT +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX +#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN4_2_SHIFT +#elif defined(CONFIG_ARM64_16K_PAGES ) +#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN16_SHIFT +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX +#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN16_2_SHIFT +#elif defined(CONFIG_ARM64_64K_PAGES ) +#define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN64_SHIFT +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN +#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX +#define ID_AA64MMFR0_TGRAN_2_SHIFT ID_AA64MMFR0_TGRAN64_2_SHIFT +#endif + +#define MVFR2_FPMISC_SHIFT 4 +#define MVFR2_SIMDMISC_SHIFT 0 + +#define DCZID_DZP_SHIFT 4 +#define DCZID_BS_SHIFT 0 + +/* +* The ZCR_ELx_LEN_* definitions intentionally include bits [8:4] which +* are reserved by the SVE architecture for future expansion of the LEN +* field, with compatible semantics. +*/ +#define ZCR_ELx_LEN_SHIFT 0 +#define ZCR_ELx_LEN_SIZE 9 +#define ZCR_ELx_LEN_MASK 0x1ff + +#define CPACR_EL1_ZEN_EL1EN (BIT(16))/* enable EL1 access */ +#define CPACR_EL1_ZEN_EL0EN (BIT(17))/* enable EL0 access, if EL1EN set */ +#define CPACR_EL1_ZEN (CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN) + +/* TCR EL1 Bit Definitions */ +#define SYS_TCR_EL1_TCMA1 (BIT(58)) +#define SYS_TCR_EL1_TCMA0 (BIT(57)) + +/* GCR_EL1 Definitions */ +#define SYS_GCR_EL1_RRND (BIT(16)) +#define SYS_GCR_EL1_EXCL_MASK 0xffffUL + +/* RGSR_EL1 Definitions */ +#define SYS_RGSR_EL1_TAG_MASK 0xfUL +#define SYS_RGSR_EL1_SEED_SHIFT 8 +#define SYS_RGSR_EL1_SEED_MASK 0xffffUL + +/* GMID_EL1 field definitions */ +#define SYS_GMID_EL1_BS_SHIFT 0 +#define SYS_GMID_EL1_BS_SIZE 4 + +/* TFSR{,E0}_EL1 bit definitions */ +#define SYS_TFSR_EL1_TF0_SHIFT 0 +#define SYS_TFSR_EL1_TF1_SHIFT 1 +#define SYS_TFSR_EL1_TF0 (UL(1) << SYS_TFSR_EL1_TF0_SHIFT) +#define SYS_TFSR_EL1_TF1 (UL(1) << SYS_TFSR_EL1_TF1_SHIFT) + +/* Safe value for MPIDR_EL1: Bit31:RES1, Bit30:U:0, Bit24:MT:0 */ +#define SYS_MPIDR_SAFE_VAL (BIT(31)) + +#define TRFCR_ELx_TS_SHIFT 5 +#define TRFCR_ELx_TS_VIRTUAL ((0x1UL) << TRFCR_ELx_TS_SHIFT) +#define TRFCR_ELx_TS_GUEST_PHYSICAL ((0x2UL) << TRFCR_ELx_TS_SHIFT) +#define TRFCR_ELx_TS_PHYSICAL ((0x3UL) << TRFCR_ELx_TS_SHIFT) +#define TRFCR_EL2_CX BIT(3) +#define TRFCR_ELx_ExTRE BIT(1) +#define TRFCR_ELx_E0TRE BIT(0) + + +/* GIC Hypervisor interface registers */ +/* ICH_MISR_EL2 bit definitions */ +#define ICH_MISR_EOI (1 << 0) +#define ICH_MISR_U (1 << 1) + +/* ICH_LR*_EL2 bit definitions */ +#define ICH_LR_VIRTUAL_ID_MASK ((1ULL << 32) - 1) + +#define ICH_LR_EOI (1ULL << 41) +#define ICH_LR_GROUP (1ULL << 60) +#define ICH_LR_HW (1ULL << 61) +#define ICH_LR_STATE (3ULL << 62) +#define ICH_LR_PENDING_BIT (1ULL << 62) +#define ICH_LR_ACTIVE_BIT (1ULL << 63) +#define ICH_LR_PHYS_ID_SHIFT 32 +#define ICH_LR_PHYS_ID_MASK (0x3ffULL << ICH_LR_PHYS_ID_SHIFT) +#define ICH_LR_PRIORITY_SHIFT 48 +#define ICH_LR_PRIORITY_MASK (0xffULL << ICH_LR_PRIORITY_SHIFT) + +/* ICH_HCR_EL2 bit definitions */ +#define ICH_HCR_EN (1 << 0) +#define ICH_HCR_UIE (1 << 1) +#define ICH_HCR_NPIE (1 << 3) +#define ICH_HCR_TC (1 << 10) +#define ICH_HCR_TALL0 (1 << 11) +#define ICH_HCR_TALL1 (1 << 12) +#define ICH_HCR_EOIcount_SHIFT 27 +#define ICH_HCR_EOIcount_MASK (0x1f << ICH_HCR_EOIcount_SHIFT) + +/* ICH_VMCR_EL2 bit definitions */ +#define ICH_VMCR_ACK_CTL_SHIFT 2 +#define ICH_VMCR_ACK_CTL_MASK (1 << ICH_VMCR_ACK_CTL_SHIFT) +#define ICH_VMCR_FIQ_EN_SHIFT 3 +#define ICH_VMCR_FIQ_EN_MASK (1 << ICH_VMCR_FIQ_EN_SHIFT) +#define ICH_VMCR_CBPR_SHIFT 4 +#define ICH_VMCR_CBPR_MASK (1 << ICH_VMCR_CBPR_SHIFT) +#define ICH_VMCR_EOIM_SHIFT 9 +#define ICH_VMCR_EOIM_MASK (1 << ICH_VMCR_EOIM_SHIFT) +#define ICH_VMCR_BPR1_SHIFT 18 +#define ICH_VMCR_BPR1_MASK (7 << ICH_VMCR_BPR1_SHIFT) +#define ICH_VMCR_BPR0_SHIFT 21 +#define ICH_VMCR_BPR0_MASK (7 << ICH_VMCR_BPR0_SHIFT) +#define ICH_VMCR_PMR_SHIFT 24 +#define ICH_VMCR_PMR_MASK (0xffUL << ICH_VMCR_PMR_SHIFT) +#define ICH_VMCR_ENG0_SHIFT 0 +#define ICH_VMCR_ENG0_MASK (1 << ICH_VMCR_ENG0_SHIFT) +#define ICH_VMCR_ENG1_SHIFT 1 +#define ICH_VMCR_ENG1_MASK (1 << ICH_VMCR_ENG1_SHIFT) + +/* ICH_VTR_EL2 bit definitions */ +#define ICH_VTR_PRI_BITS_SHIFT 29 +#define ICH_VTR_PRI_BITS_MASK (7 << ICH_VTR_PRI_BITS_SHIFT) +#define ICH_VTR_ID_BITS_SHIFT 23 +#define ICH_VTR_ID_BITS_MASK (7 << ICH_VTR_ID_BITS_SHIFT) +#define ICH_VTR_SEIS_SHIFT 22 +#define ICH_VTR_SEIS_MASK (1 << ICH_VTR_SEIS_SHIFT) +#define ICH_VTR_A3V_SHIFT 21 +#define ICH_VTR_A3V_MASK (1 << ICH_VTR_A3V_SHIFT) + +#define ARM64_FEATURE_FIELD_BITS 4 + +/* Create a mask for the feature bits of the specified feature. */ +#define ARM64_FEATURE_MASK (x) (GENMASK_ULL(x##_SHIFT + ARM64_FEATURE_FIELD_BITS - 1, x##_SHIFT)) + +#ifdef __ASSEMBLY__ + + .irp num,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30 + .equ .L__reg_num_x\num, \num + .endr + .equ .L__reg_num_xzr, 31 + + .macro mrs_s, rt, sreg + __emit_inst(0xd5200000|(\sreg)|(.L__reg_num_\rt)) + .endm + + .macro msr_s, sreg, rt + __emit_inst(0xd5000000|(\sreg)|(.L__reg_num_\rt)) + .endm + +#else +#include <linux/build_bug.h> +#include <linux/types.h> +#include <asm/alternative.h> + +asm( +" .irp num,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30\n" +" .equ .L__reg_num_x\\num, \\num\n" +" .endr\n" +" .equ .L__reg_num_xzr, 31\n" +"\n" +" .macro mrs_s, rt, sreg\n" +" .inst 0xd5200000|(\\sreg)|(.L__reg_num_\\rt)\n" +" .endm\n" +"\n" +" .macro msr_s, sreg, rt\n" +" .inst 0xd5000000|(\\sreg)|(.L__reg_num_\\rt)\n" +" .endm\n" +); + +/* +* Unlike read_cpuid, calls to read_sysreg are never expected to be +* optimized away or replaced with synthetic values. +*/ +#define read_sysreg (r) ({ \ + u64 __val; \ + asm volatile("mrs %0, " __stringify(r) : "=r" (__val)); \ + __val; \ +}) + +/* +* The "Z" constraint normally means a zero immediate, but when combined with +* the "%x0" template means XZR. +*/ +#define write_sysreg (v, r) do { \ + u64 __val = (u64)(v); \ + asm volatile("msr " __stringify(r) ", %x0" \ + : : "rZ" (__val)); \ +} while (0) + +/* +* For registers without architectural names, or simply unsupported by +* GAS. +*/ +#define read_sysreg_s (reg) ({ \ + u64 __val; \ + asm volatile("mrs_s %0, "__stringify(reg) : "=r" (__val)); \ + __val; \ +}) + +#define write_sysreg_s (reg, val) do { \ + u64 __val = (u64)val; \ + asm volatile("msr_s "__stringify(reg) ", %x0" : : "rZ" (__val));\ +} while (0) + +/* +* Modify bits in a sysreg. Bits in the clear mask are zeroed, then bits in the +* set mask are set. Other bits are left as-is. +*/ +#define sysreg_clear_set (sysreg, clear, set) do { \ + u64 __scs_val = read_sysreg(sysreg); \ + u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \ + if (__scs_new != __scs_val) \ + write_sysreg(__scs_new, sysreg); \ +} while (0) + +#define sysreg_clear_set_s (sysreg, clear, set) do { \ + u64 __scs_val = read_sysreg_s(sysreg); \ + u64 __scs_new = (__scs_val & ~(u64)(clear)) | (set); \ + if (__scs_new != __scs_val) \ + write_sysreg_s(__scs_new, sysreg); \ +} while (0) + +#define read_sysreg_par () ({ \ + u64 par; \ + asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \ + par = read_sysreg(par_el1); \ + asm(ALTERNATIVE("nop", "dmb sy", ARM64_WORKAROUND_1508412)); \ + par; \ +}) + +#endif + +#endif /* __ASM_SYSREG_H */
Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Hi Raghu,
Quoted 10 lines · Raghavendra Rao Ananta
Bring-in the kernel's
arch/arm64/include/asm/sysreg.hinto selftests to make use of all the standard register definitions in consistence with the kernel.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h
This belongs in tools/arch/arm64/include/asm/sysreg.h, I believe.
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 9 lines · Oliver Upton
Hi Raghu,
Quoted 5 lines · Raghavendra Rao Ananta
Bring-in the kernel's
arch/arm64/include/asm/sysreg.hinto selftests to make use of all the standard register definitions in consistence with the kernel.
Quoted 8 lines
Quoted 5 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.hThis belongs in
tools/arch/arm64/include/asm/sysreg.h, I believe.
Yes, that's also where I expected it to land.
Thanks,
drew
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 17 lines · Andrew Jones
Quoted 15 lines · Oliver Upton
Hi Raghu,
Quoted 10 lines · Raghavendra Rao Ananta
Bring-in the kernel's
arch/arm64/include/asm/sysreg.hinto selftests to make use of all the standard register definitions in consistence with the kernel.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h
Quoted 5 lines
Quoted 2 lines
This belongs in
tools/arch/arm64/include/asm/sysreg.h, I believe.Yes, that's also where I expected it to land.
Sure, that makes sense. I'll move it there.
Regards,
Raghavendra
Quoted 3 lines
Thanks,
drew
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Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
In reply to Raghavendra Rao AnantaQuoted 9 lines · Raghavendra Rao Ananta
Bring-in the kernel's
arch/arm64/include/asm/sysreg.hinto selftests to make use of all the standard register definitions in consistence with the kernel.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h
Can we arrange to copy this at build time rather than having a duplicate copy we need to keep in sync? We have some stuff to do this for uapi headers already.
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 12 lines · Mark Brown
Quoted 9 lines · Raghavendra Rao Ananta
Bring-in the kernel's
arch/arm64/include/asm/sysreg.hinto selftests to make use of all the standard register definitions in consistence with the kernel.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/sysreg.h | 1278 +++++++++++++++++ 1 file changed, 1278 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.h
Quoted 3 lines
Can we arrange to copy this at build time rather than having a duplicate copy we need to keep in sync? We have some stuff to do this for uapi headers already.
That's a great idea actually (I wasn't aware of it). But, probably should've mentioned it earlier, I had a hard time compiling the header as is so I modified it a little bit and made the definitions of [write|read]_sysreg_s() similar to the ones in kvm-unit-tests. I'll try my best to get the original format working and try to implement your idea if it works.
Regards,
Raghavendra
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 8 lines · Raghavendra Rao Ananta
Quoted 5 lines · Mark Brown
Quoted 1 line
create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.hCan we arrange to copy this at build time rather than having a duplicate copy we need to keep in sync? We have some stuff to do this for uapi headers already.
Quoted 6 lines
That's a great idea actually (I wasn't aware of it). But, probably should've mentioned it earlier, I had a hard time compiling the header as is so I modified it a little bit and made the definitions of [write|read]_sysreg_s() similar to the ones in kvm-unit-tests. I'll try my best to get the original format working and try to implement your idea if it works.
One option would be to do something like split out the bits that can be shared into a separate header which can be included from both places and then have the header with the unsharable bits include that. Something like sysreg.h and sysreg_defs.h for example.
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 17 lines · Mark Brown
Quoted 8 lines · Raghavendra Rao Ananta
Quoted 5 lines · Mark Brown
Quoted 1 line
create mode 100644 tools/testing/selftests/kvm/include/aarch64/sysreg.hCan we arrange to copy this at build time rather than having a duplicate copy we need to keep in sync? We have some stuff to do this for uapi headers already.
Quoted 6 lines
That's a great idea actually (I wasn't aware of it). But, probably should've mentioned it earlier, I had a hard time compiling the header as is so I modified it a little bit and made the definitions of [write|read]_sysreg_s() similar to the ones in kvm-unit-tests. I'll try my best to get the original format working and try to implement your idea if it works.
Quoted 4 lines
One option would be to do something like split out the bits that can be shared into a separate header which can be included from both places and then have the header with the unsharable bits include that. Something like
sysreg.handsysreg_defs.hfor example.
Hi Mark,
Thanks again for your suggestion. As of v6 of the series, the original header from the kernel seems to be working as is, so there's no need to split it anymore.
However, I'll plan to incorporate your suggestion as a separate series, if it's okay :)
I was looking into this though and could only find some utilities such as tools/iio/, tools/spi/, and so on, which seem to create a symbolic link to the header present in the kernel (rather than copying). Is this what you were referring to?
Regards,
Raghavendra
Re: [PATCH v4 02/18] KVM: arm64: selftests: Add sysreg.h
Quoted 4 lines · Raghavendra Rao Ananta
I was looking into this though and could only find some utilities such as
tools/iio/,tools/spi/, and so on, which seem to create a symbolic link to the header present in the kernel (rather than copying). Is this what you were referring to?
TBH I'm not exactly aware of how it works, just that it does work - the main case I was thinking of was the uapi headers, mainly when used in kselftest. Those look like they're actual copies rather than symlinks so I guess it's a different mechanism to what's used by the other tools you found.
PATCH v4 3/18 KVM: arm64: selftests: Use read/write definitions from sysreg.h
In reply to Raghavendra Rao AnantaMake use of the register read/write definitions from sysreg.h, instead of the existing definitions. A syntax correction is needed for the files that use write_sysreg() to make it compliant with the new (kernel's) syntax.
--- .../selftests/kvm/aarch64/debug-exceptions.c | 28 +++++++++---------- .../selftests/kvm/include/aarch64/processor.h | 13 +-------- 2 files changed, 15 insertions(+), 26 deletions(-)
tools/testing/selftests/kvm/aarch64/debug-exceptions.c +14 -14
@@ -34,16 +34,16 @@ static void reset_debug_state(void) { asmvolatile ("msr daifset, #8" ); -write_sysreg (osdlr_el1,0 ); -write_sysreg (oslar_el1,0 ); +write_sysreg (0 , osdlr_el1); +write_sysreg (0 , oslar_el1);isb (); -write_sysreg (mdscr_el1,0 ); +write_sysreg (0 , mdscr_el1);/* This test only uses the first bp and wp slot. */ -write_sysreg (dbgbvr0_el1,0 ); -write_sysreg (dbgbcr0_el1,0 ); -write_sysreg (dbgwcr0_el1,0 ); -write_sysreg (dbgwvr0_el1,0 ); +write_sysreg (0 , dbgbvr0_el1); +write_sysreg (0 , dbgbcr0_el1); +write_sysreg (0 , dbgwcr0_el1); +write_sysreg (0 , dbgwvr0_el1);isb (); }
@@ -53,14 +53,14 @@ static void install_wp(uint64_t addr)uint32_t mdscr; wcr =DBGWCR_LEN8 |DBGWCR_RD |DBGWCR_WR |DBGWCR_EL1 |DBGWCR_E ; -write_sysreg (dbgwcr0_el1, wcr); -write_sysreg (dbgwvr0_el1, addr); +write_sysreg (wcr, dbgwcr0_el1); +write_sysreg (addr, dbgwvr0_el1);isb (); asmvolatile ("msr daifclr, #8" ); mdscr =read_sysreg (mdscr_el1) |MDSCR_KDE |MDSCR_MDE ; -write_sysreg (mdscr_el1, mdscr); +write_sysreg (mdscr, mdscr_el1);isb (); }
@@ -70,14 +70,14 @@ static void install_hw_bp(uint64_t addr)uint32_t mdscr; bcr =DBGBCR_LEN8 |DBGBCR_EXEC |DBGBCR_EL1 |DBGBCR_E ; -write_sysreg (dbgbcr0_el1, bcr); -write_sysreg (dbgbvr0_el1, addr); +write_sysreg (bcr, dbgbcr0_el1); +write_sysreg (addr, dbgbvr0_el1);isb (); asmvolatile ("msr daifclr, #8" ); mdscr =read_sysreg (mdscr_el1) |MDSCR_KDE |MDSCR_MDE ; -write_sysreg (mdscr_el1, mdscr); +write_sysreg (mdscr, mdscr_el1);isb (); }
@@ -88,7 +88,7 @@ static void install_ss(void) asmvolatile ("msr daifclr, #8" ); mdscr =read_sysreg (mdscr_el1) |MDSCR_KDE |MDSCR_SS ; -write_sysreg (mdscr_el1, mdscr); +write_sysreg (mdscr, mdscr_el1);isb (); }
tools/testing/selftests/kvm/include/aarch64/processor.h +1 -12
@@ -8,6 +8,7 @@#define SELFTEST_KVM_PROCESSOR_H #include "kvm_util.h" +#include "sysreg.h" #include <linux/stringify.h> #include <linux/types.h>
@@ -119,18 +120,6 @@ void vm_install_exception_handler(struct kvm_vm *vm,void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); -#define write_sysreg (reg, val) \ -({ \ - u64 __val = (u64)(val); \ - asm volatile("msr " __stringify(reg) ", %x0" : : "rZ" (__val)); \ -}) - -#define read_sysreg (reg) \ -({ u64 val; \ - asm volatile("mrs %0, "__stringify(reg) : "=r"(val) : : "memory");\ - val; \ -}) -#define isb () asm volatile("isb" : : : "memory")#define dsb (opt) asm volatile("dsb " #opt : : : "memory")#define dmb (opt) asm volatile("dmb " #opt : : : "memory")
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2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 03/18] KVM: arm64: selftests: Use read/write definitions from sysreg.h
Quoted 11 lines · Raghavendra Rao Ananta
Make use of the register read/write definitions from
sysreg.h, instead of the existing definitions. A syntax correction is needed for the files that usewrite_sysreg()to make it compliant with the new (kernel's) syntax.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 28 +++++++++---------- .../selftests/kvm/include/aarch64/processor.h | 13 +-------- 2 files changed, 15 insertions(+), 26 deletions(-)
[...]
tools/testing/selftests/kvm/include/aarch64/processor.h line 11
Quoted 9 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +1
-0@@ -8,6 +8,7 @@#define SELFTEST_KVM_PROCESSOR_H #include "kvm_util.h" +#include "sysreg.h"
#include <asm/sysreg.h>, based on comments to 02/18
Otherwise:
Re: [PATCH v4 03/18] KVM: arm64: selftests: Use read/write definitions from sysreg.h
In reply to Raghavendra Rao AnantaQuoted 11 lines · Raghavendra Rao Ananta
Make use of the register read/write definitions from
sysreg.h, instead of the existing definitions. A syntax correction is needed for the files that usewrite_sysreg()to make it compliant with the new (kernel's) syntax.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 28 +++++++++---------- .../selftests/kvm/include/aarch64/processor.h | 13 +-------- 2 files changed, 15 insertions(+), 26 deletions(-)
Same comment as Oliver, otherwise
Re: [PATCH v4 03/18] KVM: arm64: selftests: Use read/write definitions from sysreg.h
Quoted 7 lines · Andrew Jones
Quoted 5 lines · Raghavendra Rao Ananta
Make use of the register read/write definitions from
sysreg.h, instead of the existing definitions. A syntax correction is needed for the files that usewrite_sysreg()to make it compliant with the new (kernel's) syntax.
Quoted 9 lines
Quoted 6 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 28 +++++++++---------- .../selftests/kvm/include/aarch64/processor.h | 13 +-------- 2 files changed, 15 insertions(+), 26 deletions(-)Same comment as Oliver, otherwise
Will fix.
Regards,
Raghavendra
Quoted 2 lines
Reviewed-by Andrew Jones <[email protected]>
PATCH v4 4/18 KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
In reply to Raghavendra Rao AnantaWith the inclusion of sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again in processor.h to use it with ARM64_SYS_REG for the KVM functions such as set_reg() or get_reg(). Hence, add helper macro, ARM64_SYS_KVM_REG, that converts SYS_* definitions in sysreg.h into ARM64_SYS_REG definitions.
--- .../selftests/kvm/include/aarch64/processor.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
tools/testing/selftests/kvm/include/aarch64/processor.h +14 -0
@@ -26,6 +26,20 @@#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 +/* +* ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert +* SYS_* register definitions in sysreg.h to use in KVM +* calls such as get_reg() and set_reg(). +*/ +#define ARM64_SYS_KVM_REG (sys_reg_id) \ +({ \ + ARM64_SYS_REG(sys_reg_Op0(sys_reg_id), \ + sys_reg_Op1(sys_reg_id), \ + sys_reg_CRn(sys_reg_id), \ + sys_reg_CRm(sys_reg_id), \ + sys_reg_Op2(sys_reg_id)); \ +}) +/* * Default MAIR * index attribute
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2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 04/18] KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
Hi Raghu,
Quoted 17 lines · Raghavendra Rao Ananta
With the inclusion of
sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again inprocessor.hto use it withARM64_SYS_REGfor the KVM functions such asset_reg()orget_reg(). Hence, add helper macro,ARM64_SYS_KVM_REG, that converts SYS_* definitions insysreg.hintoARM64_SYS_REGdefinitions.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0
tools/testing/selftests/kvm/include/aarch64/processor.h line 34
Quoted 9 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +6
-0@@ -26,6 +26,20 @@#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 +/* +* ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert +* SYS_* register definitions in sysreg.h to use in KVM +* calls such as get_reg() and set_reg(). +*/ +#define ARM64_SYS_KVM_REG (sys_reg_id) \
nit: KVM_ARM64_SYS_REG() perhaps? Dunno which is more readable.
tools/testing/selftests/kvm/include/aarch64/processor.h line 42
Quoted 8 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +8
-0+({ \ +ARM64_SYS_REG (sys_reg_Op0 (sys_reg_id), \ +sys_reg_Op1 (sys_reg_id), \ +sys_reg_CRn (sys_reg_id), \ +sys_reg_CRm (sys_reg_id), \ +sys_reg_Op2 (sys_reg_id)); \ +}) +
Could you also switch all current users of ARM64_SYS_REG() in the KVM selftests directory in this commit? You can also drop the system register encodings defined in processor.h
--
Thanks,
Oliver
Re: [PATCH v4 04/18] KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
Quoted 33 lines · Oliver Upton
Hi Raghu,
Quoted 17 lines · Raghavendra Rao Ananta
With the inclusion of
sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again inprocessor.hto use it withARM64_SYS_REGfor the KVM functions such asset_reg()orget_reg(). Hence, add helper macro,ARM64_SYS_KVM_REG, that converts SYS_* definitions insysreg.hintoARM64_SYS_REGdefinitions.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0tools/testing/selftests/kvm/include/aarch64/processor.h line 34
Quoted 9 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +6
-0@@ -26,6 +26,20 @@#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 +/* +* ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert +* SYS_* register definitions in sysreg.h to use in KVM +* calls such as get_reg() and set_reg(). +*/ +#define ARM64_SYS_KVM_REG (sys_reg_id) \nit:
KVM_ARM64_SYS_REG()perhaps? Dunno which is more readable.
Quoted 9 lines
tools/testing/selftests/kvm/include/aarch64/processor.h line 42
Quoted 8 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +8
-0+({ \ +ARM64_SYS_REG (sys_reg_Op0 (sys_reg_id), \ +sys_reg_Op1 (sys_reg_id), \ +sys_reg_CRn (sys_reg_id), \ +sys_reg_CRm (sys_reg_id), \ +sys_reg_Op2 (sys_reg_id)); \ +}) +
Heh, I came up with the logic faster than picking a name for the macro. I guess KVM_ARM64_SYS_REG may be more readable, just for the fact that it begins with KVM_. I'll change it.
Regards,
Raghavendra
Quoted 4 lines
Could you also switch all current users of
ARM64_SYS_REG()in the KVM selftests directory in this commit? You can also drop the system register encodings defined inprocessor.h
I did that in a separate patch, but I can squash it here to avoid confusion.
Regards,
Raghavendra
Quoted 3 lines
--
Thanks,
Oliver
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Re: [PATCH v4 04/18] KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
In reply to Raghavendra Rao AnantaQuoted 23 lines · Raghavendra Rao Ananta
With the inclusion of
sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again inprocessor.hto use it withARM64_SYS_REGfor the KVM functions such asset_reg()orget_reg(). Hence, add helper macro,ARM64_SYS_KVM_REG, that converts SYS_* definitions insysreg.hintoARM64_SYS_REGdefinitions.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +3
-0@@ -26,6 +26,20 @@#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 +/* +* ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert +* SYS_* register definitions in sysreg.h to use in KVM
tools/testing/selftests/kvm/include/aarch64/processor.h line 41
Quoted 10 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +10
-0+* calls such as get_reg() and set_reg(). +*/ +#define ARM64_SYS_KVM_REG (sys_reg_id) \ +({ \ + ARM64_SYS_REG(sys_reg_Op0(sys_reg_id), \ + sys_reg_Op1(sys_reg_id), \ + sys_reg_CRn(sys_reg_id), \ + sys_reg_CRm(sys_reg_id), \ + sys_reg_Op2(sys_reg_id)); \ +})
I don't think we need the ({ }), do we? Anyway,
Thanks,
drew
Quoted 7 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +1
-0+/* * Default MAIR * index attribute Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Re: [PATCH v4 04/18] KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
Quoted 22 lines · Andrew Jones
Quoted 20 lines · Raghavendra Rao Ananta
With the inclusion of
sysreg.h, that brings in system register encodings, it would be redundant to re-define register encodings again inprocessor.hto use it withARM64_SYS_REGfor the KVM functions such asset_reg()orget_reg(). Hence, add helper macro,ARM64_SYS_KVM_REG, that converts SYS_* definitions insysreg.hintoARM64_SYS_REGdefinitions.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0@@ -26,6 +26,20 @@#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0
Quoted 17 lines
tools/testing/selftests/kvm/include/aarch64/processor.h line 41
Quoted 13 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +13
-0+/* +* ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert +* SYS_* register definitions in sysreg.h to use in KVM +* calls such as get_reg() and set_reg(). +*/ +#define ARM64_SYS_KVM_REG (sys_reg_id) \ +({ \ + ARM64_SYS_REG(sys_reg_Op0(sys_reg_id), \ + sys_reg_Op1(sys_reg_id), \ + sys_reg_CRn(sys_reg_id), \ + sys_reg_CRm(sys_reg_id), \ + sys_reg_Op2(sys_reg_id)); \ +})I don't think we need the ({ }), do we? Anyway,
I guess we don't. Must have left it there while I was trying a few things. Will clean it up.
Regards,
Raghavendra
Quoted 13 lines
Reviewed-by Andrew Jones <[email protected]>Thanks,
drewQuoted 7 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +1
-1+/* * Default MAIR * index attribute -- 2.33.0.153.gba50c8fa24-goog
PATCH v4 5/18 KVM: arm64: selftests: Add support for cpu_relax
In reply to Raghavendra Rao AnantaImplement the guest helper routine, cpu_relax(), to yield the processor to other tasks.
The function was derived fromarch/arm64/include/asm/vdso/processor.h.
--- tools/testing/selftests/kvm/include/aarch64/processor.h | 5 +++++ 1 file changed, 5 insertions(+)
tools/testing/selftests/kvm/include/aarch64/processor.h +5 -0
@@ -134,6 +134,11 @@ void vm_install_exception_handler(struct kvm_vm *vm,void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +static inline void cpu_relax (void ) +{ + asmvolatile ("yield" :::"memory" ); +} +#define isb () asm volatile("isb" : : : "memory")#define dsb (opt) asm volatile("dsb " #opt : : : "memory")#define dmb (opt) asm volatile("dmb " #opt : : : "memory")
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PATCH v4 6/18 KVM: arm64: selftests: Add basic support for arch_timers
In reply to Raghavendra Rao AnantaAdd a minimalistic library support to access the virtual timers, that can be used for simple timing functionalities, such as introducing delays in the guest.
--- .../kvm/include/aarch64/arch_timer.h | 142 ++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/arch_timer.h
tools/testing/selftests/kvm/include/aarch64/arch_timer.h new file +142 -0
@@ -0,0 +1,142 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Timer specific interface +*/ + +#ifndef SELFTEST_KVM_ARCH_TIMER_H +#define SELFTEST_KVM_ARCH_TIMER_H + +#include "processor.h" + +enum arch_timer { +VIRTUAL , +PHYSICAL , +}; + +#define CTL_ENABLE (1 << 0) +#define CTL_IMASK (1 << 1) +#define CTL_ISTATUS (1 << 2) + +#define msec_to_cycles (msec) \ + (timer_get_cntfrq() * (uint64_t)(msec) / 1000) + +#define usec_to_cycles (usec) \ + (timer_get_cntfrq() * (uint64_t)(usec) / 1000000) + +#define cycles_to_usec (cycles) \ + ((uint64_t)(cycles) * 1000000 / timer_get_cntfrq()) + +static inline uint32_t timer_get_cntfrq (void ) +{ +return read_sysreg (cntfrq_el0); +} + +static inline uint64_t timer_get_cntct (enum arch_timer timer) +{ +isb (); + +switch (timer) { +case VIRTUAL : +return read_sysreg (cntvct_el0); +case PHYSICAL : +return read_sysreg (cntpct_el0); +default : +GUEST_ASSERT_1 (0 , timer); + } + +/* We should not reach here */ +return 0 ; +} + +static inline void timer_set_cval (enum arch_timer timer,uint64_t cval) +{ +switch (timer) { +case VIRTUAL : +write_sysreg (cval, cntv_cval_el0); +break ; +case PHYSICAL : +write_sysreg (cval, cntp_cval_el0); +break ; +default : +GUEST_ASSERT_1 (0 , timer); + } + +isb (); +} + +static inline uint64_t timer_get_cval (enum arch_timer timer) +{ +switch (timer) { +case VIRTUAL : +return read_sysreg (cntv_cval_el0); +case PHYSICAL : +return read_sysreg (cntp_cval_el0); +default : +GUEST_ASSERT_1 (0 , timer); + } + +/* We should not reach here */ +return 0 ; +} + +static inline void timer_set_tval (enum arch_timer timer,uint32_t tval) +{ +switch (timer) { +case VIRTUAL : +write_sysreg (tval, cntv_tval_el0); +break ; +case PHYSICAL : +write_sysreg (tval, cntp_tval_el0); +break ; +default : +GUEST_ASSERT_1 (0 , timer); + } + +isb (); +} + +static inline void timer_set_ctl (enum arch_timer timer,uint32_t ctl) +{ +switch (timer) { +case VIRTUAL : +write_sysreg (ctl, cntv_ctl_el0); +break ; +case PHYSICAL : +write_sysreg (ctl, cntp_ctl_el0); +break ; +default : +GUEST_ASSERT_1 (0 , timer); + } + +isb (); +} + +static inline uint32_t timer_get_ctl (enum arch_timer timer) +{ +switch (timer) { +case VIRTUAL : +return read_sysreg (cntv_ctl_el0); +case PHYSICAL : +return read_sysreg (cntp_ctl_el0); +default : +GUEST_ASSERT_1 (0 , timer); + } + +/* We should not reach here */ +return 0 ; +} + +static inline void timer_set_next_cval_ms (enum arch_timer timer,uint32_t msec) +{ +uint64_t now_ct =timer_get_cntct (timer); +uint64_t next_ct = now_ct +msec_to_cycles (msec); + +timer_set_cval (timer, next_ct); +} + +static inline void timer_set_next_tval_ms (enum arch_timer timer,uint32_t msec) +{ +timer_set_tval (timer,msec_to_cycles (msec)); +} + +#endif /* SELFTEST_KVM_ARCH_TIMER_H */
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2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 06/18] KVM: arm64: selftests: Add basic support for arch_timers
Quoted 10 lines · Raghavendra Rao Ananta
Add a minimalistic library support to access the virtual timers, that can be used for simple timing functionalities, such as introducing delays in the guest.
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../kvm/include/aarch64/arch_timer.h | 142 ++++++++++++++++++ 1 file changed, 142 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/arch_timer.h
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PATCH v4 7/18 KVM: arm64: selftests: Add basic support to generate delays
In reply to Raghavendra Rao AnantaAdd udelay() support to generate a delay in the guest.
The routines are derived and simplified from kernel's arch/arm64/lib/delay.c.
--- .../selftests/kvm/include/aarch64/delay.h | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/delay.h
tools/testing/selftests/kvm/include/aarch64/delay.h new file +25 -0
@@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM simple delay routines +*/ + +#ifndef SELFTEST_KVM_ARM_DELAY_H +#define SELFTEST_KVM_ARM_DELAY_H + +#include "arch_timer.h" + +static inline void __delay (uint64_t cycles) +{ +enum arch_timer timer =VIRTUAL ; +uint64_t start =timer_get_cntct (timer); + +while ((timer_get_cntct (timer) - start) < cycles) +cpu_relax (); +} + +static inline void udelay (unsigned long usec) +{ +__delay (usec_to_cycles (usec)); +} + +#endif /* SELFTEST_KVM_ARM_DELAY_H */
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PATCH v4 8/18 KVM: arm64: selftests: Add support to disable and enable local IRQs
In reply to Raghavendra Rao AnantaAdd functions local_irq_enable() and local_irq_disable() to enable and disable the IRQs from the guest, respectively.
--- .../testing/selftests/kvm/include/aarch64/processor.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
tools/testing/selftests/kvm/include/aarch64/processor.h +10 -0
@@ -184,4 +184,14 @@ static __always_inline u32 __raw_readl(const volatile void *addr)#define writel (v,c) ({ __iowmb(); writel_relaxed((v),(c));})#define readl (c) ({ u32 __v = readl_relaxed(c); __iormb(__v); __v; }) +static inline void local_irq_enable (void ) +{ + asmvolatile ("msr daifclr, #3" : : :"memory" ); +} + +static inline void local_irq_disable (void ) +{ + asmvolatile ("msr daifset, #3" : : :"memory" ); +} +#endif /* SELFTEST_KVM_PROCESSOR_H */
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PATCH v4 9/18 KVM: arm64: selftests: Add guest support to get the vcpuid
In reply to Raghavendra Rao AnantaAt times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce get_vcpuid() that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.
--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)
tools/testing/selftests/kvm/include/aarch64/processor.h +3 -0
@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {
@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asm volatile("msr daifset, #3" : : : "memory"); } +int get_vcpuid (void ); +#endif /* SELFTEST_KVM_PROCESSOR_H */
tools/testing/selftests/kvm/lib/aarch64/processor.c +46 -0
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Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 25 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +1
-0@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {
tools/testing/selftests/kvm/include/aarch64/processor.h static inline void local_irq_disable(void) · line 199
Quoted 5 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +2
-0@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asmvolatile ("msr daifset, #3" : : :"memory" ); } +int get_vcpuid (void ); +
I believe both of these functions could use some documentation. The former has implicit ordering requirements (can only be called after all vCPUs are created) and the latter can only be used within a guest.
Quoted 10 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0#endif /* SELFTEST_KVM_PROCESSOR_H */ tools/testing/selftests/kvm/lib/aarch64/processor.c +1
-0@@ -13,9 +13,17 @@#include "processor.h" #define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000 +#define VM_VCPUID_MAP_INVAL -1
tools/testing/selftests/kvm/lib/aarch64/processor.c line 26
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0static vm_vaddr_t exception_handlers; +struct vm_vcpuid_map { +uint64_t mpidr; +int vcpuid; +}; + +static struct vm_vcpuid_map vcpuid_map[KVM_MAX_VCPUS ]; +
Hmm.
I'm not too big of a fan that the KVM_MAX_VCPUS macro is defined in the KVM selftests. Really, userspace should discover the limit from the kernel. Especially when we want to write tests that test behavior at KVM's limit.
That being said, there are more instances of these static allocations in the selftests code, so you aren't to be blamed.
Related: commit 074c82c8f7cf ("kvm: x86: Increase MAX_VCPUS to 1024") has raised this limit.
Quoted 19 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +12
-0static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +434,41 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_vcpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ; +struct vcpu *vcpu; +struct vm_vcpuid_map *map; + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &vcpuid_map[i++]; + map->vcpuid = vcpu->id; +get_reg (vm, vcpu->id, +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &map->mpidr);
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 458
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +10
-0+ map->mpidr &=MPIDR_HWID_BITMASK ; + } + +if (i <KVM_MAX_VCPUS ) + vcpuid_map[i].vcpuid =VM_VCPUID_MAP_INVAL ; + +sync_global_to_guest (vm, vcpuid_map); +} + +int get_vcpuid (void )
nit: guest_get_vcpuid()
Quoted 19 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +16
-0+{ +int i, vcpuid; +uint64_t mpidr =read_sysreg (mpidr_el1) &MPIDR_HWID_BITMASK ; + +for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = vcpuid_map[i].vcpuid; +GUEST_ASSERT_1 (vcpuid !=VM_VCPUID_MAP_INVAL , mpidr); + +if (mpidr == vcpuid_map[i].mpidr) +return vcpuid; + } + +/* We should not be reaching here */ +GUEST_ASSERT_1 (0 , mpidr); +return -1 ; +}Signature · 1 line
2.33.0.153.gba50c8fa24-goog
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Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 65 lines · Oliver Upton
Quoted 25 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +1
-0@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {tools/testing/selftests/kvm/include/aarch64/processor.h static inline void local_irq_disable(void) · line 199
Quoted 5 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +2
-0@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asmvolatile ("msr daifset, #3" : : :"memory" ); } +int get_vcpuid (void ); +I believe both of these functions could use some documentation. The former has implicit ordering requirements (can only be called after all vCPUs are created) and the latter can only be used within a guest.
Quoted 10 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0#endif /* SELFTEST_KVM_PROCESSOR_H */ tools/testing/selftests/kvm/lib/aarch64/processor.c +1
-0@@ -13,9 +13,17 @@#include "processor.h" #define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000 +#define VM_VCPUID_MAP_INVAL -1tools/testing/selftests/kvm/lib/aarch64/processor.c line 26
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0static vm_vaddr_t exception_handlers; +struct vm_vcpuid_map { +uint64_t mpidr; +int vcpuid; +}; + +static struct vm_vcpuid_map vcpuid_map[KVM_MAX_VCPUS ]; +Hmm.
I'm not too big of a fan that the
KVM_MAX_VCPUSmacro is defined in the KVM selftests. Really, userspace should discover the limit from the kernel. Especially when we want to write tests that test behavior at KVM's limit.
Quoted 6 lines
That being said, there are more instances of these static allocations in the selftests code, so you aren't to be blamed.
Related: commit
074c82c8f7cf("kvm: x86: IncreaseMAX_VCPUSto 1024") has raised this limit.
I'm not a fan of static allocations either, but the fact that sync_global_to_guest() doesn't have a size argument (yet), makes me want to take a shorter route. Anyway, if you want I can allocate it dynamically and copy it to the guest's memory by hand, or come up with a utility wrapper while I'm at it.
(Just wanted to make sure we are not over-engineering our needs here).
Quoted 23 lines
Quoted 23 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +16
-0static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +434,41 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_vcpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ; +struct vcpu *vcpu; +struct vm_vcpuid_map *map; + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &vcpuid_map[i++]; + map->vcpuid = vcpu->id; +get_reg (vm, vcpu->id, +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &map->mpidr); + map->mpidr &=MPIDR_HWID_BITMASK ; + } + +if (i <KVM_MAX_VCPUS )
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 458
Quoted 6 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +6
-0+ vcpuid_map[i].vcpuid =VM_VCPUID_MAP_INVAL ; + +sync_global_to_guest (vm, vcpuid_map); +} + +int get_vcpuid (void )nit:
guest_get_vcpuid()
Sounds nice. Since we have a lot of guest utility functions now, I'm fancying a world where we prefix guest_ with all of them to avoid confusion.
Regards,
Raghavendra
Quoted 19 lines
Quoted 19 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +16
-1+{ +int i, vcpuid; +uint64_t mpidr =read_sysreg (mpidr_el1) &MPIDR_HWID_BITMASK ; + +for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = vcpuid_map[i].vcpuid; +GUEST_ASSERT_1 (vcpuid !=VM_VCPUID_MAP_INVAL , mpidr); + +if (mpidr == vcpuid_map[i].mpidr) +return vcpuid; + } + +/* We should not be reaching here */ +GUEST_ASSERT_1 (0 , mpidr); +return -1 ; +} --2.33.0.153.gba50c8fa24-goog
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 73 lines · Raghavendra Rao Ananta
Quoted 65 lines · Oliver Upton
Quoted 25 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +1
-0@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {tools/testing/selftests/kvm/include/aarch64/processor.h static inline void local_irq_disable(void) · line 199
Quoted 5 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +2
-0@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asmvolatile ("msr daifset, #3" : : :"memory" ); } +int get_vcpuid (void ); +I believe both of these functions could use some documentation. The former has implicit ordering requirements (can only be called after all vCPUs are created) and the latter can only be used within a guest.
Quoted 10 lines
tools/testing/selftests/kvm/include/aarch64/processor.h +0
-0#endif /* SELFTEST_KVM_PROCESSOR_H */ tools/testing/selftests/kvm/lib/aarch64/processor.c +1
-0@@ -13,9 +13,17 @@#include "processor.h" #define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000 +#define VM_VCPUID_MAP_INVAL -1tools/testing/selftests/kvm/lib/aarch64/processor.c line 26
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0static vm_vaddr_t exception_handlers; +struct vm_vcpuid_map { +uint64_t mpidr; +int vcpuid; +}; + +static struct vm_vcpuid_map vcpuid_map[KVM_MAX_VCPUS ]; +Hmm.
I'm not too big of a fan that the
KVM_MAX_VCPUSmacro is defined in the KVM selftests. Really, userspace should discover the limit from the kernel. Especially when we want to write tests that test behavior at KVM's limit.Quoted 6 lines
That being said, there are more instances of these static allocations in the selftests code, so you aren't to be blamed.
Related: commit
074c82c8f7cf("kvm: x86: IncreaseMAX_VCPUSto 1024") has raised this limit.
Quoted 6 lines
I'm not a fan of static allocations either, but the fact that
sync_global_to_guest()doesn't have a size argument (yet), makes me want to take a shorter route. Anyway, if you want I can allocate it dynamically and copy it to the guest's memory by hand, or come up with a utility wrapper while I'm at it.
(Just wanted to make sure we are not over-engineering our needs here).
No, please don't worry about it in your series. I'm just openly whining is all :-)
Quoted 32 lines
Quoted 23 lines
Quoted 23 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +16
-0static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +434,41 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_vcpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ; +struct vcpu *vcpu; +struct vm_vcpuid_map *map; + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &vcpuid_map[i++]; + map->vcpuid = vcpu->id; +get_reg (vm, vcpu->id, +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &map->mpidr); + map->mpidr &=MPIDR_HWID_BITMASK ; + } + +if (i <KVM_MAX_VCPUS )Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 458
Quoted 6 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +6
-0+ vcpuid_map[i].vcpuid =VM_VCPUID_MAP_INVAL ; + +sync_global_to_guest (vm, vcpuid_map); +} + +int get_vcpuid (void )nit:
guest_get_vcpuid()
Quoted 4 lines
Sounds nice. Since we have a lot of guest utility functions now, I'm fancying a world where we prefix
guest_with all of them to avoid confusion.
Sounds good to me!
--
Thanks,
Oliver
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
In reply to Raghavendra Rao AnantaQuoted 37 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +3
-0@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asm volatile("msr daifset, #3" : : : "memory"); } +int get_vcpuid (void ); +#endif /* SELFTEST_KVM_PROCESSOR_H */ tools/testing/selftests/kvm/lib/aarch64/processor.c +0
-0@@ -13,9 +13,17 @@#include "processor.h"
tools/testing/selftests/kvm/lib/aarch64/processor.c line 23
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0#define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000 +#define VM_VCPUID_MAP_INVAL -1static vm_vaddr_t exception_handlers; +struct vm_vcpuid_map { +uint64_t mpidr; +int vcpuid; +};
I'd prefer we create an arch neutral map structure that has arch specific vm_vcpuid_map_add() functions to populate them. So, instead of calling the 'mpidr' member mpidr, we should call it 'cpuid'. On x86, for example, cpuid would be the APIC ID.
Quoted 14 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0+ +static struct vm_vcpuid_map vcpuid_map[KVM_MAX_VCPUS ]; +static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +434,41 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_vcpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ;
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 450
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +10
-0+struct vcpu *vcpu; +struct vm_vcpuid_map *map; + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &vcpuid_map[i++]; + map->vcpuid = vcpu->id; +get_reg (vm, vcpu->id, +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &map->mpidr); + map->mpidr &=MPIDR_HWID_BITMASK ; + }
Here we should assert that i is no longer zero. If it is, then we should complain that vcpus need to be added before this call is made.
But, rather than providing an init function that inits the whole map after all vcpus are created, I think we should add each vcpu's map entry as we add vcpus to the vm. So we need to call the arch-specific vm_vcpuid_map_add() from vm_vcpu_add(). We can just create stubs for x86 and s390 for now. Also, in vm_vcpu_rm() we should find the corresponding entry in the vcpuid map and set it to VM_VCPUID_MAP_INVAL in order to remove it.
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 455
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0+ +if (i <KVM_MAX_VCPUS ) + vcpuid_map[i].vcpuid =VM_VCPUID_MAP_INVAL ; + +sync_global_to_guest (vm, vcpuid_map);
We can't do this synch part for the test code at vcpu add time since we don't know if the guest page tables are ready. I think it's OK to require the test code to do this when the guest code needs it though. We should document that requirement above the vm_vcpuid_map struct declaration, which will be in kvm_util.h.
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 465
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +10
-0+} + +int get_vcpuid (void ) +{ +int i, vcpuid; +uint64_t mpidr =read_sysreg (mpidr_el1) &MPIDR_HWID_BITMASK ; + +for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = vcpuid_map[i].vcpuid; +GUEST_ASSERT_1 (vcpuid !=VM_VCPUID_MAP_INVAL , mpidr);
We don't want this assert if it's possible to have sparse maps, which it probably isn't ever going to be, but...
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 472
Quoted 7 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0+ +if (mpidr == vcpuid_map[i].mpidr) +return vcpuid; + } + +/* We should not be reaching here */ +GUEST_ASSERT_1 (0 , mpidr);
...this assert should be good enough to sanity check the map by itself anyway.
Also, the only arch-specific aspect of get_vcpuid() is the looking up the cpuid. So we should make get_vcpuid arch-neutral and call an arch- specific get_cpuid() from it.
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +2
-0+return -1 ; +}Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Thanks,
drew
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 45 lines · Andrew Jones
Quoted 43 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/include/aarch64/processor.h | 3 ++ .../selftests/kvm/lib/aarch64/processor.c | 46 +++++++++++++++++++ 2 files changed, 49 insertions(+)tools/testing/selftests/kvm/include/aarch64/processor.h +3
-0@@ -133,6 +133,7 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector, handler_fn handler);void vm_install_sync_handler (struct kvm_vm *vm,int vector,int ec,handler_fn handler); +void vm_vcpuid_map_init (struct kvm_vm *vm);static inline void cpu_relax (void ) {@@ -194,4 +195,6 @@ static inline void local_irq_disable(void) asm volatile("msr daifset, #3" : : : "memory"); } +int get_vcpuid (void ); +#endif /* SELFTEST_KVM_PROCESSOR_H */ tools/testing/selftests/kvm/lib/aarch64/processor.c +1
-0@@ -13,9 +13,17 @@#include "processor.h" #define DEFAULT_ARM64_GUEST_STACK_VADDR_MIN 0xac0000 +#define VM_VCPUID_MAP_INVAL -1static vm_vaddr_t exception_handlers;
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c line 23
Quoted 4 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +4
-0+struct vm_vcpuid_map { +uint64_t mpidr; +int vcpuid; +};I'd prefer we create an arch neutral map structure that has arch specific
vm_vcpuid_map_add()functions to populate them. So, instead of calling the 'mpidr' member mpidr, we should call it 'cpuid'. On x86, for example, cpuid would be the APIC ID.
Great idea. Let me think about it..
Quoted 19 lines
Quoted 19 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +12
-0+ +static struct vm_vcpuid_map vcpuid_map[KVM_MAX_VCPUS ]; +static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +434,41 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_vcpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ; +struct vcpu *vcpu; +struct vm_vcpuid_map *map; + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &vcpuid_map[i++];
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 450
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0+ map->vcpuid = vcpu->id; +get_reg (vm, vcpu->id, +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &map->mpidr); + map->mpidr &=MPIDR_HWID_BITMASK ; + }Here we should assert that i is no longer zero. If it is, then we should complain that vcpus need to be added before this call is made.
Makes sense, I'll add an ASSERT to be safe.
Quoted 8 lines
But, rather than providing an init function that inits the whole map after all vcpus are created, I think we should add each vcpu's map entry as we add vcpus to the vm. So we need to call the arch-specific
vm_vcpuid_map_add()fromvm_vcpu_add(). We can just create stubs for x86 and s390 for now. Also, invm_vcpu_rm()we should find the corresponding entry in the vcpuid map and set it toVM_VCPUID_MAP_INVALin order to remove it.
Quoted 12 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 455
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0+ +if (i <KVM_MAX_VCPUS ) + vcpuid_map[i].vcpuid =VM_VCPUID_MAP_INVAL ; + +sync_global_to_guest (vm, vcpuid_map);We can't do this synch part for the test code at vcpu add time since we don't know if the guest page tables are ready. I think it's OK to require the test code to do this when the guest code needs it though. We should document that requirement above the
vm_vcpuid_mapstruct declaration, which will be inkvm_util.h.
Sure, I'll add a comment.
Quoted 5 lines
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0+} + +int get_vcpuid (void ) +{ +int i, vcpuid;
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 465
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +5
-0+uint64_t mpidr =read_sysreg (mpidr_el1) &MPIDR_HWID_BITMASK ; + +for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = vcpuid_map[i].vcpuid; +GUEST_ASSERT_1 (vcpuid !=VM_VCPUID_MAP_INVAL , mpidr);We don't want this assert if it's possible to have sparse maps, which it probably isn't ever going to be, but...
If you look at the way the array is arranged, the element with VM_VCPUID_MAP_INVAL acts as a sentinel for us and all the proper elements would lie before this. So, I don't think we'd have a sparse array here.
Regards,
Raghavendra
Quoted 15 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 472
Quoted 7 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +7
-0+ +if (mpidr == vcpuid_map[i].mpidr) +return vcpuid; + } + +/* We should not be reaching here */ +GUEST_ASSERT_1 (0 , mpidr);...this assert should be good enough to sanity check the map by itself anyway.
Also, the only arch-specific aspect of
get_vcpuid()is the looking up the cpuid. So we should makeget_vcpuidarch-neutral and call an arch- specificget_cpuid()from it.
Quoted 9 lines
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +2
-1+return -1 ; +} --2.33.0.153.gba50c8fa24-goog
Thanks,
drew
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Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 3 lines · Raghavendra Rao Ananta
Quoted 2 lines · Andrew Jones
On Thu, Sep 09, 2021 at 01:38:09AM +0000, Raghavendra Rao Ananta wrote:
...
Quoted 11 lines
Quoted 7 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c void vm_install_exception_handler(struct kvm_vm *vm, int vector, · line 465
Quoted 3 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +3
-0+for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = vcpuid_map[i].vcpuid; +GUEST_ASSERT_1 (vcpuid !=VM_VCPUID_MAP_INVAL , mpidr);We don't want this assert if it's possible to have sparse maps, which it probably isn't ever going to be, but...
If you look at the way the array is arranged, the element with
VM_VCPUID_MAP_INVALacts as a sentinel for us and all the proper elements would lie before this. So, I don't think we'd have a sparse array here.
If we switch to my suggestion of adding map entries at vcpu-add time and removing them at vcpu-rm time, then the array may become sparse depending on the order of removals.
Thanks,
drew
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 13 lines · Andrew Jones
Quoted 3 lines · Raghavendra Rao Ananta
Quoted 2 lines · Andrew Jones
On Thu, Sep 09, 2021 at 01:38:09AM +0000, Raghavendra Rao Ananta wrote:
...
Quoted 7 lines
Quoted 7 lines
Review
Quoted 3 lines
(quoted diff) +3
-0+ for (i = 0; i < KVM_MAX_VCPUS; i++) { + vcpuid = vcpuid_map[i].vcpuid; + GUEST_ASSERT_1(vcpuid != VM_VCPUID_MAP_INVAL, mpidr);We don't want this assert if it's possible to have sparse maps, which it probably isn't ever going to be, but...
Quoted 9 lines
Quoted 4 lines
If you look at the way the array is arranged, the element with
VM_VCPUID_MAP_INVALacts as a sentinel for us and all the proper elements would lie before this. So, I don't think we'd have a sparse array here.If we switch to my suggestion of adding map entries at vcpu-add time and removing them at vcpu-rm time, then the array may become sparse depending on the order of removals.
Oh, I get it now. But like you mentioned, we add entries to the map while the vCPUs are getting added and then sync_global_to_guest() later. This seems like a lot of maintainance, unless I'm interpreting it wrong or not seeing an advantage.
I like your idea of coming up an arch-independent interface, however. So I modified it similar to the familiar ucall interface that we have and does everything in one shot to avoid any confusion:
(quoted diff) +0 -0
b/tools/testing/selftests/kvm/include/kvm_util.h
index 010b59b13917..0e87cb0c980b 100644
tools/testing/selftests/kvm/include/kvm_util.h +0 -0
@@ -400,4 +400,24 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t
vcpu_id, struct ucall *uc);
int vm_get_stats_fd(struct kvm_vm *vm);
int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid);
+#define VM_CPUID_MAP_INVAL -1
+
+struct vm_cpuid_map {
+ uint64_t hw_cpuid;
+ int vcpuid;
+};
+
+/*
+ * Create a vcpuid:hw_cpuid map and export it to the guest
+ *
+ * Input Args:
+ * vm - KVM VM.
+ *
+ * Output Args: None
+ *
+ * Must be called after all the vCPUs are added to the VM
+ */
+void vm_cpuid_map_init(struct kvm_vm *vm);
+int guest_get_vcpuid(void);
+
#endif /* SELFTEST_KVM_UTIL_H */
(quoted diff) +0 -0
b/tools/testing/selftests/kvm/lib/aarch64/processor.c index db64ee206064..e796bb3984a6 100644
tools/testing/selftests/kvm/lib/aarch64/processor.c +2 -0
@@ -16,6 +16,8 @@static vm_vaddr_t exception_handlers; +static struct vm_cpuid_map cpuid_map[KVM_MAX_VCPUS ]; +static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );
@@ -426,3 +428,42 @@ void vm_install_exception_handler(struct kvm_vm
*vm, int vector,
assert(vector < VECTOR_NUM);
handlers->exception_handlers[vector][0] = handler; }
+
+void vm_cpuid_map_init(struct kvm_vm *vm)
+{
+ int i = 0; + struct vcpu *vcpu; + struct vm_cpuid_map *map;
+
+ TEST_ASSERT(!list_empty(&vm->vcpus), "vCPUs must have been created\n");
+
+ list_for_each_entry(vcpu, &vm->vcpus, list) {
+ map = &cpuid_map[i++]; + map->vcpuid = vcpu->id; + get_reg(vm, vcpu->id,
KVM_ARM64_SYS_REG(SYS_MPIDR_EL1), &map->hw_cpuid);
+ map->hw_cpuid &= MPIDR_HWID_BITMASK;
+ }
+
+ if (i < KVM_MAX_VCPUS)
+ cpuid_map[i].vcpuid = VM_CPUID_MAP_INVAL;
+
+ sync_global_to_guest(vm, cpuid_map);
+}
+
+int guest_get_vcpuid(void)
+{
+ int i, vcpuid;
+ uint64_t mpidr = read_sysreg(mpidr_el1) & MPIDR_HWID_BITMASK;
+
+ for (i = 0; i < KVM_MAX_VCPUS; i++) {
+ vcpuid = cpuid_map[i].vcpuid;
+
+ /* Was this vCPU added to the VM after the map was
initialized? */
+ GUEST_ASSERT_1(vcpuid != VM_CPUID_MAP_INVAL, mpidr);
+
+ if (mpidr == cpuid_map[i].hw_cpuid)
+ return vcpuid;
+ }
+
+ /* We should not be reaching here */ + GUEST_ASSERT_1(0, mpidr); + return -1;
+}
This would ensure that we don't have a sparse array and can use the last non-vCPU element as a sentinal node.
If you still feel preparing the map as and when the vCPUs are created makes more sense, I can go for it.
Regards,
Raghavendra
Quoted 3 lines
Thanks,
drew
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 19 lines · Raghavendra Rao Ananta
Quoted 18 lines · Andrew Jones
Quoted 3 lines · Raghavendra Rao Ananta
Quoted 2 lines · Andrew Jones
On Thu, Sep 09, 2021 at 01:38:09AM +0000, Raghavendra Rao Ananta wrote:
...
Quoted 11 lines
Quoted 7 lines
Review
Quoted 3 lines
(quoted diff) +3
-0+ for (i = 0; i < KVM_MAX_VCPUS; i++) { + vcpuid = vcpuid_map[i].vcpuid; + GUEST_ASSERT_1(vcpuid != VM_VCPUID_MAP_INVAL, mpidr);We don't want this assert if it's possible to have sparse maps, which it probably isn't ever going to be, but...
If you look at the way the array is arranged, the element with
VM_VCPUID_MAP_INVALacts as a sentinel for us and all the proper elements would lie before this. So, I don't think we'd have a sparse array here.
Quoted 8 lines
Quoted 4 lines
If we switch to my suggestion of adding map entries at vcpu-add time and removing them at vcpu-rm time, then the array may become sparse depending on the order of removals.
Oh, I get it now. But like you mentioned, we add entries to the map while the vCPUs are getting added and then
sync_global_to_guest()later. This seems like a lot of maintainance, unless I'm interpreting it wrong or not seeing an advantage.
The advantage is that you don't need to create all vcpus before calling the map init function. While it's true that we'll still require a call after adding all vcpus if we want to export the map to the guest, i.e. sync_global_to_guest, we'll never have to worry about the map being out of synch wrt vcpus on the host side, and there's no need to call sync_global_to_guest at all when the test needs the map, but the guest doesn't need to access it.
Quoted 3 lines
I like your idea of coming up an arch-independent interface, however. So I modified it similar to the familiar ucall interface that we have and does everything in one shot to avoid any confusion:
Right, ucall_init does call sync_global_to_guest, but it's the only lib function so far. Everything else exported to the guest must be done explicitly.
Quoted 95 lines
tools/testing/selftests/kvm/include/kvm_util.h +20
-0@@ -400,4 +400,24 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc);int vm_get_stats_fd (struct kvm_vm *vm);int vcpu_get_stats_fd (struct kvm_vm *vm,uint32_t vcpuid); +#define VM_CPUID_MAP_INVAL -1 + +struct vm_cpuid_map { +uint64_t hw_cpuid; +int vcpuid; +}; + +/* +* Create a vcpuid:hw_cpuid map and export it to the guest +* +* Input Args: +* vm - KVM VM. +* +* Output Args: None +* +* Must be called after all the vCPUs are added to the VM +*/ +void vm_cpuid_map_init (struct kvm_vm *vm); +int guest_get_vcpuid (void ); +#endif /*
SELFTEST_KVM_UTIL_H*/tools/testing/selftests/kvm/lib/aarch64/processor.c +15
-0@@ -16,6 +16,8 @@static vm_vaddr_t exception_handlers; +static struct vm_cpuid_map cpuid_map[KVM_MAX_VCPUS ]; +static uint64_t page_align (struct kvm_vm *vm,uint64_t v) {return (v + vm->page_size) & ~(vm->page_size -1 );@@ -426,3 +428,42 @@ void vm_install_exception_handler(struct kvm_vm *vm, int vector,assert (vector <VECTOR_NUM ); handlers->exception_handlers[vector][0 ] = handler; } + +void vm_cpuid_map_init (struct kvm_vm *vm) +{ +int i =0 ; +struct vcpu *vcpu; +struct vm_cpuid_map *map; + +TEST_ASSERT (!list_empty (&vm->vcpus),"vCPUs must have been created\n" ); + +list_for_each_entry (vcpu, &vm->vcpus, list) { + map = &cpuid_map[i++]; + map->vcpuid = vcpu->id; + get_reg(vm, vcpu->id,
KVM_ARM64_SYS_REG(SYS_MPIDR_EL1),&map->hw_cpuid);tools/testing/selftests/kvm/lib/aarch64/processor.c +18
-0+ map->hw_cpuid &=MPIDR_HWID_BITMASK ; + } + +if (i <KVM_MAX_VCPUS ) + cpuid_map[i].vcpuid =VM_CPUID_MAP_INVAL ; + +sync_global_to_guest (vm, cpuid_map); +} + +int guest_get_vcpuid (void ) +{ +int i, vcpuid; +uint64_t mpidr =read_sysreg (mpidr_el1) &MPIDR_HWID_BITMASK ; + +for (i =0 ; i <KVM_MAX_VCPUS ; i++) { + vcpuid = cpuid_map[i].vcpuid; + +/* Was this vCPU added to the VM after the map was initialized? */
tools/testing/selftests/kvm/lib/aarch64/processor.c +10
-0+GUEST_ASSERT_1 (vcpuid !=VM_CPUID_MAP_INVAL , mpidr); + +if (mpidr == cpuid_map[i].hw_cpuid) +return vcpuid; + } + +/* We should not be reaching here */ +GUEST_ASSERT_1 (0 , mpidr); +return -1 ; +}
Quoted 4 lines
This would ensure that we don't have a sparse array and can use the last non-vCPU element as a sentinal node.
If you still feel preparing the map as and when the vCPUs are created makes more sense, I can go for it.
Yup, I think that's still my preference. We don't really need a sentinel node for such a small array. We can just do
static struct vm_cpuid_map cpuid_map[KVM_MAX_VCPUS] = { [0 ... KVM_MAX_VCPUS - 1] = VM_CPUID_MAP_INVAL };
to ensure all invalid nodes are invalid. After a full loop if we didn't find a valid entry, then we assert, which easily supports a sparse array.
Also, please don't forget that guest_get_vcpuid() can be common for all architectures. We just need an arch-specific call for get_hw_cpuid().
Thanks,
drew
Quoted 7 lines
Regards,
RaghavendraQuoted 3 lines
Thanks,
drew
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
In reply to Raghavendra Rao AnantaHi Raghu and all,
Quoted 6 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.
How about using TPIDR_EL1 to hold the vcpuid ?
i.e. have aarch64_vcpu_setup() set the register to vcpuid and guest_get_vcpuid() simply return a value of the register. This would be a simpler solution to implement.
Thanks,
Reiji
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 11 lines · Reiji Watanabe
Hi Raghu and all,
Quoted 6 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.
Quoted 4 lines
How about using
TPIDR_EL1to hold the vcpuid ?
i.e. haveaarch64_vcpu_setup()set the register to vcpuid andguest_get_vcpuid()simply return a value of the register. This would be a simpler solution to implement.
That is a great suggestion. It's arch-specific, but maybe the other architectures can mimic it with their own capabilities. And, in the unlikely event a unit test wants that register for itself, then it can build its own mpidr-vcpuid map if necessary. Ship it :-)
Thanks,
drew
Re: [PATCH v4 09/18] KVM: arm64: selftests: Add guest support to get the vcpuid
Quoted 18 lines · Andrew Jones
Quoted 11 lines · Reiji Watanabe
Hi Raghu and all,
Quoted 6 lines · Raghavendra Rao Ananta
At times, such as when in the interrupt handler, the guest wants to get the vcpuid that it's running on. As a result, introduce
get_vcpuid()that returns the vcpuid of the calling vcpu. At its backend, the VMM prepares a map of vcpuid and mpidr during VM initialization and exports the map to the guest for it to read.Quoted 4 lines
How about using
TPIDR_EL1to hold the vcpuid ?
i.e. haveaarch64_vcpu_setup()set the register to vcpuid andguest_get_vcpuid()simply return a value of the register. This would be a simpler solution to implement.
Quoted 6 lines
That is a great suggestion. It's arch-specific, but maybe the other architectures can mimic it with their own capabilities. And, in the unlikely event a unit test wants that register for itself, then it can build its own mpidr-vcpuid map if necessary. Ship it :-)
Thanks for the suggestion, Reiji. I'll send out a patch soon for this.
Regards,
Raghavendra
Quoted 3 lines
Thanks,
drew
PATCH v4 10/18 KVM: arm64: selftests: Add light-weight spinlock support
In reply to Raghavendra Rao AnantaAdd a simpler version of spinlock support for ARM64 for the guests to use.
The implementation is loosely based on the spinlock implementation in kvm-unit-tests.
--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/spinlock.h | 13 +++++++++ .../selftests/kvm/lib/aarch64/spinlock.c | 27 +++++++++++++++++++ 3 files changed, 41 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/spinlock.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/spinlock.c
tools/testing/selftests/kvm/Makefile +1 -1
@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
tools/testing/selftests/kvm/include/aarch64/spinlock.h new file +13 -0
@@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef SELFTEST_KVM_ARM64_SPINLOCK_H +#define SELFTEST_KVM_ARM64_SPINLOCK_H + +struct spinlock { +int v; +}; + +extern void spin_lock (struct spinlock *lock); +extern void spin_unlock (struct spinlock *lock); + +#endif /* SELFTEST_KVM_ARM64_SPINLOCK_H */
tools/testing/selftests/kvm/lib/aarch64/spinlock.c new file +27 -0
@@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 +/* +* ARM64 Spinlock support +*/ +#include <stdint.h> + +#include "spinlock.h" + +void spin_lock (struct spinlock *lock) +{ +int val, res; + + asmvolatile ( +"1: ldaxr %w0, [%2]\n" +" cbnz %w0, 1b\n" +" mov %w0, #1\n" +" stxr %w1, %w0, [%2]\n" +" cbnz %w1, 1b\n" + :"=&r" (val),"=&r" (res) + :"r" (&lock->v) + :"memory" ); +} + +void spin_unlock (struct spinlock *lock) +{ + asmvolatile ("stlr wzr, [%0]\n" : :"r" (&lock->v) :"memory" ); +}
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
PATCH v4 11/18 KVM: arm64: selftests: Add basic GICv3 support
In reply to Raghavendra Rao AnantaAdd basic support for ARM Generic Interrupt Controller v3. The support provides guests to setup interrupts.
The work is inspired from kvm-unit-tests and the kernel's GIC driver (drivers/irqchip/irq-gic-v3.c).
--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/gic.h | 21 ++ tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 +++++++ .../selftests/kvm/lib/aarch64/gic_private.h | 21 ++ .../selftests/kvm/lib/aarch64/gic_v3.c | 240 ++++++++++++++++++ .../selftests/kvm/lib/aarch64/gic_v3.h | 70 +++++ 6 files changed, 446 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h
tools/testing/selftests/kvm/Makefile +1 -1
@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
tools/testing/selftests/kvm/include/aarch64/gic.h new file +21 -0
@@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) specific defines +*/ + +#ifndef SELFTEST_KVM_GIC_H +#define SELFTEST_KVM_GIC_H + +enum gic_type { +GIC_V3 , +GIC_TYPE_MAX , +}; + +void gic_init (enum gic_type type,unsigned int nr_cpus, +void *dist_base,void *redist_base); +void gic_irq_enable (unsigned int intid); +void gic_irq_disable (unsigned int intid); +unsigned int gic_get_and_ack_irq (void ); +void gic_set_eoi (unsigned int intid); + +#endif /* SELFTEST_KVM_GIC_H */
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +93 -0
93 lines not on this page · raw message
tools/testing/selftests/kvm/lib/aarch64/gic_private.h new file +21 -0
@@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) private defines that's only +* shared among the GIC library code. +*/ + +#ifndef SELFTEST_KVM_GIC_PRIVATE_H +#define SELFTEST_KVM_GIC_PRIVATE_H + +struct gic_common_ops { +void (*gic_init)(unsigned int nr_cpus,void *dist_base); +void (*gic_cpu_init)(unsigned int cpu,void *redist_base); +void (*gic_irq_enable)(unsigned int intid); +void (*gic_irq_disable)(unsigned int intid); +uint64_t (*gic_read_iar)(void ); +void (*gic_write_eoir)(uint32_t irq); +}; + +extern const struct gic_common_ops gicv3_ops; + +#endif /* SELFTEST_KVM_GIC_PRIVATE_H */
tools/testing/selftests/kvm/lib/aarch64/gic_v3.c new file +240 -0
240 lines not on this page · raw message
tools/testing/selftests/kvm/lib/aarch64/gic_v3.h new file +70 -0
70 lines not on this page · raw message
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 11/18] KVM: arm64: selftests: Add basic GICv3 support
Quoted 22 lines · Raghavendra Rao Ananta
Add basic support for ARM Generic Interrupt Controller v3. The support provides guests to setup interrupts.
The work is inspired from kvm-unit-tests and the kernel's GIC driver (
drivers/irqchip/irq-gic-v3.c).Signed-off-by Raghavendra Rao Ananta <[email protected]>Reviewed-by Andrew Jones <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/gic.h | 21 ++ tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 +++++++ .../selftests/kvm/lib/aarch64/gic_private.h | 21 ++ .../selftests/kvm/lib/aarch64/gic_v3.c | 240 ++++++++++++++++++ .../selftests/kvm/lib/aarch64/gic_v3.h | 70 +++++ 6 files changed, 446 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h
[...]
tools/testing/selftests/kvm/lib/aarch64/gic.c line 28
Quoted 4 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +4
-0+static void +gic_dist_init (enum gic_type type,unsigned int nr_cpus,void *dist_base) +{ +const struct gic_common_ops *gic_ops;
does this need to be initialized? I haven't tried compiling, but it seems it should trigger a compiler warning as it is only initialized if type == GIC_V3.
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +9
-0+spin_lock (&gic_lock); + +/* Distributor initialization is needed only once per VM */ +if (gic_common_ops) { +spin_unlock (&gic_lock); +return ; + } + +if (type ==GIC_V3 )
tools/testing/selftests/kvm/lib/aarch64/gic.c line 48
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +10
-0+ gic_ops = &gicv3_ops; + + gic_ops->gic_init (nr_cpus, dist_base); + gic_common_ops = gic_ops; + +/* Make sure that the initialized data is visible to all the vCPUs */ +dsb (sy); + +spin_unlock (&gic_lock); +}
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Re: [PATCH v4 11/18] KVM: arm64: selftests: Add basic GICv3 support
Quoted 27 lines · Oliver Upton
Quoted 22 lines · Raghavendra Rao Ananta
Add basic support for ARM Generic Interrupt Controller v3. The support provides guests to setup interrupts.
The work is inspired from kvm-unit-tests and the kernel's GIC driver (
drivers/irqchip/irq-gic-v3.c).Signed-off-by Raghavendra Rao Ananta <[email protected]>Reviewed-by Andrew Jones <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/gic.h | 21 ++ tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 +++++++ .../selftests/kvm/lib/aarch64/gic_private.h | 21 ++ .../selftests/kvm/lib/aarch64/gic_v3.c | 240 ++++++++++++++++++ .../selftests/kvm/lib/aarch64/gic_v3.h | 70 +++++ 6 files changed, 446 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h[...]
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c line 28
Quoted 4 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +4
-0+static void +gic_dist_init (enum gic_type type,unsigned int nr_cpus,void *dist_base) +{ +const struct gic_common_ops *gic_ops;does this need to be initialized? I haven't tried compiling, but it seems it should trigger a compiler warning as it is only initialized if type ==
GIC_V3.
Huh, I thought I had a default case covering this (must have gone lost during code reorg).
Nice catch though! Surprisingly, the compiler never warned. I'm not sure if its smart
enough to figure out that the caller of this function had GUEST_ASSERT(type < GIC_TYPE_MAX);
Anyway, I'll clean it up.
Regards,
Raghavendra
Quoted 20 lines
Quoted 19 lines
tools/testing/selftests/kvm/lib/aarch64/gic.c new file +19
-0+spin_lock (&gic_lock); + +/* Distributor initialization is needed only once per VM */ +if (gic_common_ops) { +spin_unlock (&gic_lock); +return ; + } + +if (type ==GIC_V3 ) + gic_ops = &gicv3_ops; + + gic_ops->gic_init (nr_cpus, dist_base); + gic_common_ops = gic_ops; + +/* Make sure that the initialized data is visible to all the vCPUs */ +dsb (sy); + +spin_unlock (&gic_lock); +}
PATCH v4 12/18 KVM: selftests: Keep track of the number of vCPUs for a VM
In reply to Raghavendra Rao AnantaThe host may want to know the number of vCPUs that were created for a particular VM (used in upcoming patches). Hence, include nr_vcpus as a part of 'struct kvm_vm' to keep track of vCPUs as and when they are added or deleted, and return to the caller via vm_get_nr_vcpus().
--- tools/testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 7 +++++++ tools/testing/selftests/kvm/lib/kvm_util_internal.h | 1 + 3 files changed, 9 insertions(+)
tools/testing/selftests/kvm/include/kvm_util.h +1 -0
@@ -399,5 +399,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc);int vm_get_stats_fd (struct kvm_vm *vm);int vcpu_get_stats_fd (struct kvm_vm *vm,uint32_t vcpuid); +int vm_get_nr_vcpus (struct kvm_vm *vm);#endif /* SELFTEST_KVM_UTIL_H */
tools/testing/selftests/kvm/lib/kvm_util.c +7 -0
@@ -594,6 +594,7 @@ static void vm_vcpu_rm(struct kvm_vm *vm, struct vcpu *vcpu)list_del (&vcpu->list);free (vcpu); + vm->nr_vcpus--; }void kvm_vm_release (struct kvm_vm *vmp)
@@ -1143,6 +1144,7 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid)/* Add to linked-list of VCPUs. */ list_add (&vcpu->list, &vm->vcpus); + vm->nr_vcpus++; }/*
@@ -2343,3 +2345,8 @@ int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid)return ioctl (vcpu->fd,KVM_GET_STATS_FD ,NULL ); } + +int vm_get_nr_vcpus (struct kvm_vm *vm) +{ +return vm->nr_vcpus; +}
tools/testing/selftests/kvm/lib/kvm_util_internal.h +1 -0
@@ -56,6 +56,7 @@ struct kvm_vm {unsigned int va_bits;uint64_t max_gfn;struct list_head vcpus; +int nr_vcpus;struct userspace_mem_regions regions;struct sparsebit *vpages_valid;struct sparsebit *vpages_mapped;
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Re: [PATCH v4 12/18] KVM: selftests: Keep track of the number of vCPUs for a VM
Quoted 6 lines · Raghavendra Rao Ananta
The host may want to know the number of vCPUs that were created for a particular VM (used in upcoming patches). Hence, include
nr_vcpusas a part of 'structkvm_vm' to keep track of vCPUs as and when they are added or deleted, and return to the caller viavm_get_nr_vcpus().
Quoted 6 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 7 +++++++ tools/testing/selftests/kvm/lib/kvm_util_internal.h | 1 + 3 files changed, 9 insertions(+)
Shouldn't a test keep track/know how many vCPUs it has created?
--
Thanks,
Oliver
Re: [PATCH v4 12/18] KVM: selftests: Keep track of the number of vCPUs for a VM
In reply to Raghavendra Rao AnantaQuoted 45 lines · Raghavendra Rao Ananta
The host may want to know the number of vCPUs that were created for a particular VM (used in upcoming patches). Hence, include
nr_vcpusas a part of 'structkvm_vm' to keep track of vCPUs as and when they are added or deleted, and return to the caller viavm_get_nr_vcpus().Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 7 +++++++ tools/testing/selftests/kvm/lib/kvm_util_internal.h | 1 + 3 files changed, 9 insertions(+)tools/testing/selftests/kvm/include/kvm_util.h +1
-0@@ -399,5 +399,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc);int vm_get_stats_fd (struct kvm_vm *vm);int vcpu_get_stats_fd (struct kvm_vm *vm,uint32_t vcpuid); +int vm_get_nr_vcpus (struct kvm_vm *vm);#endif /* SELFTEST_KVM_UTIL_H */ tools/testing/selftests/kvm/lib/kvm_util.c +2
-0@@ -594,6 +594,7 @@ static void vm_vcpu_rm(struct kvm_vm *vm, struct vcpu *vcpu)list_del (&vcpu->list);free (vcpu); + vm->nr_vcpus--; }void kvm_vm_release (struct kvm_vm *vmp)@@ -1143,6 +1144,7 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid)/* Add to linked-list of VCPUs. */ list_add (&vcpu->list, &vm->vcpus); + vm->nr_vcpus++; }/*
tools/testing/selftests/kvm/lib/kvm_util.c int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid) · line 2352
Quoted 8 lines
tools/testing/selftests/kvm/lib/kvm_util.c +5
-0@@ -2343,3 +2345,8 @@ int vcpu_get_stats_fd(struct kvm_vm *vm, uint32_t vcpuid)return ioctl (vcpu->fd,KVM_GET_STATS_FD ,NULL ); } + +int vm_get_nr_vcpus (struct kvm_vm *vm) +{ +return vm->nr_vcpus; +}
nr_vcpus looks like useful library internal information, since the only other way to get the number is to iterate the vcpu list. I'm not sure if we need this vm_get_nr_vcpus() accessor for tests yet though. Maybe it'll be more clear to me when I see how it's used.
Thanks,
drew
Quoted 15 lines
tools/testing/selftests/kvm/lib/kvm_util_internal.h +1
-0@@ -56,6 +56,7 @@ struct kvm_vm {unsigned int va_bits;uint64_t max_gfn;struct list_head vcpus; +int nr_vcpus;struct userspace_mem_regions regions;struct sparsebit *vpages_valid;struct sparsebit *vpages_mapped;Signature · 1 line
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PATCH v4 13/18 KVM: selftests: Add support to get the VM's mode
In reply to Raghavendra Rao AnantaThe host utility functions (in upcoming patches) may want to know the mode of the VM. Hence, create vm_get_mode() to return the same.
--- tools/testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/kvm_util.c | 5 +++++ 2 files changed, 6 insertions(+)
tools/testing/selftests/kvm/include/kvm_util.h +1 -0
@@ -400,5 +400,6 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc);int vm_get_stats_fd (struct kvm_vm *vm);int vcpu_get_stats_fd (struct kvm_vm *vm,uint32_t vcpuid);int vm_get_nr_vcpus (struct kvm_vm *vm); +enum vm_guest_mode vm_get_mode (struct kvm_vm *vm);#endif /* SELFTEST_KVM_UTIL_H */
tools/testing/selftests/kvm/lib/kvm_util.c +5 -0
@@ -2350,3 +2350,8 @@ int vm_get_nr_vcpus(struct kvm_vm *vm) {return vm->nr_vcpus; } + +enum vm_guest_mode vm_get_mode (struct kvm_vm *vm) +{ +return vm->mode; +}
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PATCH v4 14/18 KVM: arm64: selftests: Add host support for vGIC
In reply to Raghavendra Rao AnantaImplement a simple library to perform vGIC-v3 setup from a host point of view. This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses.
The definition of REDIST_REGION_ATTR_ADDR is taken from aarch64/vgic_init test.
--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/vgic.h | 20 +++++++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 +++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
tools/testing/selftests/kvm/Makefile +1 -1
@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
tools/testing/selftests/kvm/include/aarch64/vgic.h new file +20 -0
@@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) host specific defines +*/ + +#ifndef SELFTEST_KVM_VGIC_H +#define SELFTEST_KVM_VGIC_H + +#include <linux/kvm.h> + +#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) \ + (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | \ + ((uint64_t)(flags) << 12) | \ + index) + +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa); + +#endif /* SELFTEST_KVM_VGIC_H */
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +60 -0
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2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 14/18] KVM: arm64: selftests: Add host support for vGIC
Hi Raghu,
Quoted 8 lines · Raghavendra Rao Ananta
Implement a simple library to perform vGIC-v3 setup from a host point of view. This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses.
The definition of
REDIST_REGION_ATTR_ADDRis taken from aarch64/vgic_init test.
Consider dropping the macro from vgic_init.c and have it just include vgic.h
Quoted 57 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/vgic.h | 20 +++++++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 +++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.ctools/testing/selftests/kvm/Makefile +1
-1@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_testtools/testing/selftests/kvm/include/aarch64/vgic.h new file +20
-0@@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) host specific defines +*/ + +#ifndef SELFTEST_KVM_VGIC_H +#define SELFTEST_KVM_VGIC_H + +#include <linux/kvm.h> + +#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) \ + (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | \ + ((uint64_t)(flags) << 12) | \ + index) + +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa); + +#endif /* SELFTEST_KVM_VGIC_H */ tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +3
-0@@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 +/* +* ARM Generic Interrupt Controller (GIC) v3 host support
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 13
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +10
-0+*/ + +#include <linux/kvm.h> +#include <linux/sizes.h> + +#include "kvm_util.h" +#include "vgic.h" + +#define VGIC_V3_GICD_SZ (SZ_64K) +#define VGIC_V3_GICR_SZ (2 * SZ_64K)
These values are UAPI, consider dropping them in favor of the definitions from asm/kvm.h
Quoted 6 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +6
-0+ +/* +* vGIC-v3 default host setup +* +* Input args: +* vm - KVM VM
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 29
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +10
-0+* gicd_base_gpa - Guest Physical Address of the Distributor region +* gicr_base_gpa - Guest Physical Address of the Redistributor region +* +* Output args: None +* +* Return: GIC file-descriptor or negative error code upon failure +* +* The function creates a vGIC-v3 device and maps the distributor and +* redistributor regions of the guest. Since it depends on the number of +* vCPUs for the VM, it must be called after all the vCPUs have been created.
You could avoid the ordering dependency by explicitly taking nr_vcpus as an arg. It would also avoid the need for 12/18.
Also note the required alignment on the GPA arguments you're taking.
Quoted 34 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +31
-0+*/ +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa) +{ +uint64_t redist_attr; +int gic_fd, nr_vcpus; +unsigned int nr_gic_pages; + + nr_vcpus =vm_get_nr_vcpus (vm); +TEST_ASSERT (nr_vcpus >0 ,"Invalid number of CPUs: %u\n" , nr_vcpus); + +/* Distributor setup */ + gic_fd =kvm_create_device (vm,KVM_DEV_TYPE_ARM_VGIC_V3 , false); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_DIST , &gicd_base_gpa, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm),VGIC_V3_GICD_SZ ); +virt_map (vm, gicd_base_gpa, gicd_base_gpa, nr_gic_pages); + +/* Redistributor setup */ + redist_attr =REDIST_REGION_ATTR_ADDR (nr_vcpus, gicr_base_gpa,0 ,0 ); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION , &redist_attr, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm), +VGIC_V3_GICR_SZ * nr_vcpus); +virt_map (vm, gicr_base_gpa, gicr_base_gpa, nr_gic_pages); + +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_CTRL , +KVM_DEV_ARM_VGIC_CTRL_INIT ,NULL , true); + +return gic_fd; +}Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Re: [PATCH v4 14/18] KVM: arm64: selftests: Add host support for vGIC
Quoted 8 lines · Oliver Upton
Hi Raghu,
Quoted 5 lines · Raghavendra Rao Ananta
Implement a simple library to perform vGIC-v3 setup from a host point of view. This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses.
Quoted 6 lines
Quoted 3 lines
The definition of
REDIST_REGION_ATTR_ADDRis taken from aarch64/vgic_init test.Consider dropping the macro from
vgic_init.cand have it just includevgic.h
Yes, I agree 18/18 should be squashed into this one.
Quoted 63 lines
Quoted 63 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/vgic.h | 20 +++++++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 +++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.ctools/testing/selftests/kvm/Makefile +1
-1@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_testtools/testing/selftests/kvm/include/aarch64/vgic.h new file +20
-0@@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) host specific defines +*/ + +#ifndef SELFTEST_KVM_VGIC_H +#define SELFTEST_KVM_VGIC_H + +#include <linux/kvm.h> + +#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) \ + (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | \ + ((uint64_t)(flags) << 12) | \ + index) + +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa); + +#endif /* SELFTEST_KVM_VGIC_H */ tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +8
-0@@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 +/* +* ARM Generic Interrupt Controller (GIC) v3 host support +*/ + +#include <linux/kvm.h> +#include <linux/sizes.h> +
Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 13
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+#include "kvm_util.h" +#include "vgic.h" + +#define VGIC_V3_GICD_SZ (SZ_64K) +#define VGIC_V3_GICR_SZ (2 * SZ_64K)These values are UAPI, consider dropping them in favor of the definitions from
asm/kvm.h
Yes, please.
Quoted 12 lines
Quoted 12 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +11
-0+ +/* +* vGIC-v3 default host setup +* +* Input args: +* vm - KVM VM +* gicd_base_gpa - Guest Physical Address of the Distributor region +* gicr_base_gpa - Guest Physical Address of the Redistributor region +* +* Output args: None +*
Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 29
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+* Return: GIC file-descriptor or negative error code upon failure +* +* The function creates a vGIC-v3 device and maps the distributor and +* redistributor regions of the guest. Since it depends on the number of +* vCPUs for the VM, it must be called after all the vCPUs have been created. You could avoid the ordering dependency by explicitly taking
nr_vcpusas an arg. It would also avoid the need for 12/18.
All the vcpus need to be created prior to calling KVM_DEV_ARM_VGIC_CTRL_INIT, so even though I don't disagree with simply passing nr_vcpus to this function, we should still assert if the VM's idea of the number doesn't match. But, this is a lib file, so there's no reason not to do
#include "../kvm_util_internal.h"
and just access the vcpu list to get the count or, if we add a new internal nr_vcpus member, access it directly. IOW, so far I don't believe we need vm_get_nr_vcpus().
Quoted 29 lines
Also note the required alignment on the GPA arguments you're taking.
Quoted 26 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +26
-0+*/ +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa) +{ +uint64_t redist_attr; +int gic_fd, nr_vcpus; +unsigned int nr_gic_pages; + + nr_vcpus =vm_get_nr_vcpus (vm); +TEST_ASSERT (nr_vcpus >0 ,"Invalid number of CPUs: %u\n" , nr_vcpus); + +/* Distributor setup */ + gic_fd =kvm_create_device (vm,KVM_DEV_TYPE_ARM_VGIC_V3 , false); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_DIST , &gicd_base_gpa, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm),VGIC_V3_GICD_SZ ); +virt_map (vm, gicd_base_gpa, gicd_base_gpa, nr_gic_pages); + +/* Redistributor setup */ + redist_attr =REDIST_REGION_ATTR_ADDR (nr_vcpus, gicr_base_gpa,0 ,0 ); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION , &redist_attr, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm), +VGIC_V3_GICR_SZ * nr_vcpus); +virt_map (vm, gicr_base_gpa, gicr_base_gpa, nr_gic_pages); +
Quoted 9 lines
Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_CTRL , +KVM_DEV_ARM_VGIC_CTRL_INIT ,NULL , true); + +return gic_fd; +}Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Thanks,
drew
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Re: [PATCH v4 14/18] KVM: arm64: selftests: Add host support for vGIC
Quoted 91 lines · Andrew Jones
Quoted 8 lines · Oliver Upton
Hi Raghu,
Quoted 5 lines · Raghavendra Rao Ananta
Implement a simple library to perform vGIC-v3 setup from a host point of view. This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses.
Quoted 6 lines
Quoted 3 lines
The definition of
REDIST_REGION_ATTR_ADDRis taken from aarch64/vgic_init test.Consider dropping the macro from
vgic_init.cand have it just includevgic.hYes, I agree 18/18 should be squashed into this one.
Quoted 63 lines
Quoted 63 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/vgic.h | 20 +++++++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 +++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.ctools/testing/selftests/kvm/Makefile +1
-1@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_testtools/testing/selftests/kvm/include/aarch64/vgic.h new file +20
-0@@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) host specific defines +*/ + +#ifndef SELFTEST_KVM_VGIC_H +#define SELFTEST_KVM_VGIC_H + +#include <linux/kvm.h> + +#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) \ + (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | \ + ((uint64_t)(flags) << 12) | \ + index) + +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa); + +#endif /* SELFTEST_KVM_VGIC_H */ tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +8
-0@@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 +/* +* ARM Generic Interrupt Controller (GIC) v3 host support +*/ + +#include <linux/kvm.h> +#include <linux/sizes.h> +Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 13
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+#include "kvm_util.h" +#include "vgic.h" + +#define VGIC_V3_GICD_SZ (SZ_64K) +#define VGIC_V3_GICR_SZ (2 * SZ_64K)These values are UAPI, consider dropping them in favor of the definitions from
asm/kvm.h
Quoted 2 lines
Yes, please.
Huh, I wasn't aware of this. Thanks! Will drop.
Quoted 21 lines
Quoted 12 lines
Quoted 12 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +11
-0+ +/* +* vGIC-v3 default host setup +* +* Input args: +* vm - KVM VM +* gicd_base_gpa - Guest Physical Address of the Distributor region +* gicr_base_gpa - Guest Physical Address of the Redistributor region +* +* Output args: None +* Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 29
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+* Return: GIC file-descriptor or negative error code upon failure +* +* The function creates a vGIC-v3 device and maps the distributor and +* redistributor regions of the guest. Since it depends on the number of +* vCPUs for the VM, it must be called after all the vCPUs have been created. You could avoid the ordering dependency by explicitly taking
nr_vcpusas an arg. It would also avoid the need for 12/18.
Quoted 6 lines
All the vcpus need to be created prior to calling
KVM_DEV_ARM_VGIC_CTRL_INIT, so even though I don't disagree with simply passingnr_vcpusto this function, we should still assert if the VM's idea of the number doesn't match. But, this is a lib file, so there's no reason not to do
Okay, I'll include it back in the args.
Quoted 6 lines
#include "
../kvm_util_internal.h"and just access the vcpu list to get the count or, if we add a new internal
nr_vcpusmember, access it directly. IOW, so far I don't believe we needvm_get_nr_vcpus().
Sure, I'll get rid of it.
Regards,
Raghavendra
Quoted 42 lines
Quoted 29 lines
Also note the required alignment on the GPA arguments you're taking.
Quoted 26 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +26
-0+*/ +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa) +{ +uint64_t redist_attr; +int gic_fd, nr_vcpus; +unsigned int nr_gic_pages; + + nr_vcpus =vm_get_nr_vcpus (vm); +TEST_ASSERT (nr_vcpus >0 ,"Invalid number of CPUs: %u\n" , nr_vcpus); + +/* Distributor setup */ + gic_fd =kvm_create_device (vm,KVM_DEV_TYPE_ARM_VGIC_V3 , false); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_DIST , &gicd_base_gpa, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm),VGIC_V3_GICD_SZ ); +virt_map (vm, gicd_base_gpa, gicd_base_gpa, nr_gic_pages); + +/* Redistributor setup */ + redist_attr =REDIST_REGION_ATTR_ADDR (nr_vcpus, gicr_base_gpa,0 ,0 ); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION , &redist_attr, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm), +VGIC_V3_GICR_SZ * nr_vcpus); +virt_map (vm, gicr_base_gpa, gicr_base_gpa, nr_gic_pages); +Quoted 9 lines
Quoted 8 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-1+kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_CTRL , +KVM_DEV_ARM_VGIC_CTRL_INIT ,NULL , true); + +return gic_fd; +} --2.33.0.153.gba50c8fa24-goog
Thanks,
drew
Re: [PATCH v4 14/18] KVM: arm64: selftests: Add host support for vGIC
In reply to Oliver UptonQuoted 98 lines · Oliver Upton
Hi Raghu,
Quoted 8 lines · Raghavendra Rao Ananta
Implement a simple library to perform vGIC-v3 setup from a host point of view. This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses.
The definition of
REDIST_REGION_ATTR_ADDRis taken from aarch64/vgic_init test.Consider dropping the macro from
vgic_init.cand have it just includevgic.hQuoted 57 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/Makefile | 2 +- .../selftests/kvm/include/aarch64/vgic.h | 20 +++++++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 60 +++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.ctools/testing/selftests/kvm/Makefile +1
-1@@ -35,7 +35,7 @@ endif LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/rbtree.c lib/sparsebit.c lib/test_util.c lib/guest_modes.c lib/perf_test_util.c LIBKVM_x86_64 = lib/x86_64/apic.c lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c lib/x86_64/handlers.S -LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c +LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c lib/aarch64/handlers.S lib/aarch64/spinlock.c lib/aarch64/gic.c lib/aarch64/gic_v3.c lib/aarch64/vgic.c LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c lib/s390x/diag318_test_handler.c TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_testtools/testing/selftests/kvm/include/aarch64/vgic.h new file +20
-0@@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* +* ARM Generic Interrupt Controller (GIC) host specific defines +*/ + +#ifndef SELFTEST_KVM_VGIC_H +#define SELFTEST_KVM_VGIC_H + +#include <linux/kvm.h> + +#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) \ + (((uint64_t)(count) << 52) | \ + ((uint64_t)((base) >> 16) << 16) | \ + ((uint64_t)(flags) << 12) | \ + index) + +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa); + +#endif /* SELFTEST_KVM_VGIC_H */ tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +3
-0@@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 +/* +* ARM Generic Interrupt Controller (GIC) v3 host support tools/testing/selftests/kvm/lib/aarch64/vgic.c line 13
Quoted 10 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +10
-0+*/ + +#include <linux/kvm.h> +#include <linux/sizes.h> + +#include "kvm_util.h" +#include "vgic.h" + +#define VGIC_V3_GICD_SZ (SZ_64K) +#define VGIC_V3_GICR_SZ (2 * SZ_64K)These values are UAPI, consider dropping them in favor of the definitions from
asm/kvm.hQuoted 11 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +11
-0+ +/* +* vGIC-v3 default host setup +* +* Input args: +* vm - KVM VM +* gicd_base_gpa - Guest Physical Address of the Distributor region +* gicr_base_gpa - Guest Physical Address of the Redistributor region +* +* Output args: None +*
Quoted 9 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c line 29
Quoted 5 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +5
-0+* Return: GIC file-descriptor or negative error code upon failure +* +* The function creates a vGIC-v3 device and maps the distributor and +* redistributor regions of the guest. Since it depends on the number of +* vCPUs for the VM, it must be called after all the vCPUs have been created. You could avoid the ordering dependency by explicitly taking
nr_vcpusas an arg. It would also avoid the need for 12/18.
Well I guess I was focusing on Andrew's comment on v3 10/12, "TEST_ASSERT(!list_empty(&vm->vcpus), ...) to ensure we've created vcpus first. To be really paranoid we could even confirm the number of vcpus in the list matches nr_vcpus."
So, instead of just getting the arg from the caller and doing all the fancy checks, I figured let vgic_v3_setup() learn this on its own, which made me define vm_get_nr_vcpus().
Regards,
Raghavendra
Quoted 36 lines
Also note the required alignment on the GPA arguments you're taking.
Quoted 34 lines
tools/testing/selftests/kvm/lib/aarch64/vgic.c new file +31
-1+*/ +int vgic_v3_setup (struct kvm_vm *vm, +uint64_t gicd_base_gpa,uint64_t gicr_base_gpa) +{ +uint64_t redist_attr; +int gic_fd, nr_vcpus; +unsigned int nr_gic_pages; + + nr_vcpus =vm_get_nr_vcpus (vm); +TEST_ASSERT (nr_vcpus >0 ,"Invalid number of CPUs: %u\n" , nr_vcpus); + +/* Distributor setup */ + gic_fd =kvm_create_device (vm,KVM_DEV_TYPE_ARM_VGIC_V3 , false); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_DIST , &gicd_base_gpa, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm),VGIC_V3_GICD_SZ ); +virt_map (vm, gicd_base_gpa, gicd_base_gpa, nr_gic_pages); + +/* Redistributor setup */ + redist_attr =REDIST_REGION_ATTR_ADDR (nr_vcpus, gicr_base_gpa,0 ,0 ); +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_ADDR , +KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION , &redist_attr, true); + nr_gic_pages =vm_calc_num_guest_pages (vm_get_mode (vm), +VGIC_V3_GICR_SZ * nr_vcpus); +virt_map (vm, gicr_base_gpa, gicr_base_gpa, nr_gic_pages); + +kvm_device_access (gic_fd,KVM_DEV_ARM_VGIC_GRP_CTRL , +KVM_DEV_ARM_VGIC_CTRL_INIT ,NULL , true); + +return gic_fd; +} --2.33.0.153.gba50c8fa24-goog
PATCH v4 15/18 KVM: arm64: selftests: Add arch_timer test
In reply to Raghavendra Rao AnantaAdd a KVM selftest to validate the arch_timer functionality. Primarily, the test sets up periodic timer interrupts and validates the basic architectural expectations upon its receipt.
The test provides command-line options to configure the period of the timer, number of iterations, and number of vCPUs.
--- tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/aarch64/arch_timer.c | 351 ++++++++++++++++++ 3 files changed, 353 insertions(+) create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.c
tools/testing/selftests/kvm/.gitignore +1 -0
@@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +/aarch64/arch_timer /aarch64/debug-exceptions /aarch64/get-reg-list /aarch64/psci_cpu_on_test
tools/testing/selftests/kvm/Makefile +1 -0
@@ -84,6 +84,7 @@ TEST_GEN_PROGS_x86_64 += set_memory_region_test TEST_GEN_PROGS_x86_64 += steal_time TEST_GEN_PROGS_x86_64 += kvm_binary_stats_test +TEST_GEN_PROGS_aarch64 += aarch64/arch_timer TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list TEST_GEN_PROGS_aarch64 += aarch64/psci_cpu_on_test
tools/testing/selftests/kvm/aarch64/arch_timer.c new file +351 -0
351 lines not on this page · raw message
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 15/18] KVM: arm64: selftests: Add arch_timer test
Quoted 89 lines · Raghavendra Rao Ananta
Add a KVM selftest to validate the
arch_timerfunctionality. Primarily, the test sets up periodic timer interrupts and validates the basic architectural expectations upon its receipt.The test provides command-line options to configure the period of the timer, number of iterations, and number of vCPUs.
Signed-off-by Raghavendra Rao Ananta <[email protected]>Reviewed-by Andrew Jones <[email protected]>--- tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/aarch64/arch_timer.c | 351 ++++++++++++++++++ 3 files changed, 353 insertions(+) create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.ctools/testing/selftests/kvm/.gitignore +1
-0@@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +/aarch64/arch_timer /aarch64/debug-exceptions /aarch64/get-reg-list /aarch64/psci_cpu_on_testtools/testing/selftests/kvm/Makefile +1
-0@@ -84,6 +84,7 @@ TEST_GEN_PROGS_x86_64 += set_memory_region_test TEST_GEN_PROGS_x86_64 += steal_time TEST_GEN_PROGS_x86_64 += kvm_binary_stats_test +TEST_GEN_PROGS_aarch64 += aarch64/arch_timer TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list TEST_GEN_PROGS_aarch64 += aarch64/psci_cpu_on_testtools/testing/selftests/kvm/aarch64/arch_timer.c new file +45
-0@@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* +* arch_timer.c - Tests the aarch64 timer IRQ functionality +* +* The test validates both the virtual and physical timer IRQs using +* CVAL and TVAL registers. This consitutes the four stages in the test. +* The guest's main thread configures the timer interrupt for a stage +* and waits for it to fire, with a timeout equal to the timer period. +* It asserts that the timeout doesn't exceed the timer period. +* +* On the other hand, upon receipt of an interrupt, the guest's interrupt +* handler validates the interrupt by checking if the architectural state +* is in compliance with the specifications. +* +* The test provides command-line options to configure the timer's +* period (-p), number of vCPUs (-n), and iterations per stage (-i). +* +* Copyright (c) 2021, Google LLC. +*/ + +#define _GNU_SOURCE + +#include <stdlib.h> +#include <pthread.h> +#include <linux/kvm.h> +#include <linux/sizes.h> + +#include "kvm_util.h" +#include "processor.h" +#include "delay.h" +#include "arch_timer.h" +#include "gic.h" +#include "vgic.h" + +#define NR_VCPUS_DEF 4 +#define NR_TEST_ITERS_DEF 5 +#define TIMER_TEST_PERIOD_MS_DEF 10 +#define TIMER_TEST_ERR_MARGIN_US 100 + +struct test_args { +int nr_vcpus; +int nr_iter; +int timer_period_ms; +}; +
tools/testing/selftests/kvm/aarch64/arch_timer.c line 55
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c new file +10
-0+static struct test_args test_args = { + .nr_vcpus =NR_VCPUS_DEF , + .nr_iter =NR_TEST_ITERS_DEF , + .timer_period_ms =TIMER_TEST_PERIOD_MS_DEF , +}; + +#define msecs_to_usecs (msec) ((msec) * 1000LL) + +#define VTIMER_IRQ 27 +#define PTIMER_IRQ 30
I don't know if these are guaranteed, necessarily. Probably safest to determine the IRQ# from the KVM_ARM_VCPU_TIMER_IRQ_{P,V}TIMER vCPU device attributes. Either that or write these values to the attributes.
Quoted 298 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c new file +295
-0+#define GICD_BASE_GPA 0x8000000ULL +#define GICR_BASE_GPA 0x80A0000ULL + +enum guest_stage { +GUEST_STAGE_VTIMER_CVAL =1 , +GUEST_STAGE_VTIMER_TVAL , +GUEST_STAGE_PTIMER_CVAL , +GUEST_STAGE_PTIMER_TVAL , +GUEST_STAGE_MAX , +}; + +/* Shared variables between host and guest */ +struct test_vcpu_shared_data { +int nr_iter; +enum guest_stage guest_stage; +uint64_t xcnt; +}; + +struct test_vcpu { +uint32_t vcpuid; +pthread_t pt_vcpu_run; +struct kvm_vm *vm; +}; + +static struct test_vcpu test_vcpu[KVM_MAX_VCPUS ]; +static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS ]; + +static void +guest_configure_timer_action (struct test_vcpu_shared_data *shared_data) +{ +switch (shared_data->guest_stage) { +case GUEST_STAGE_VTIMER_CVAL : +timer_set_next_cval_ms (VIRTUAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_VTIMER_TVAL : +timer_set_next_tval_ms (VIRTUAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_PTIMER_CVAL : +timer_set_next_cval_ms (PHYSICAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_PTIMER_TVAL : +timer_set_next_tval_ms (PHYSICAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_ENABLE ); +break ; +default : +GUEST_ASSERT (0 ); + } +} + +static void guest_validate_irq (unsigned int intid, +struct test_vcpu_shared_data *shared_data) +{ +enum guest_stage stage = shared_data->guest_stage; +uint64_t xcnt =0 , xcnt_diff_us, cval =0 ; +unsigned long xctl =0 ; +unsigned int timer_irq =0 ; + +if (stage ==GUEST_STAGE_VTIMER_CVAL || + stage ==GUEST_STAGE_VTIMER_TVAL ) { + xctl =timer_get_ctl (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_IMASK ); + xcnt =timer_get_cntct (VIRTUAL ); + cval =timer_get_cval (VIRTUAL ); + timer_irq =VTIMER_IRQ ; + }else if (stage ==GUEST_STAGE_PTIMER_CVAL || + stage ==GUEST_STAGE_PTIMER_TVAL ) { + xctl =timer_get_ctl (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_IMASK ); + xcnt =timer_get_cntct (PHYSICAL ); + cval =timer_get_cval (PHYSICAL ); + timer_irq =PTIMER_IRQ ; + }else { +GUEST_ASSERT (0 ); + } + + xcnt_diff_us =cycles_to_usec (xcnt - shared_data->xcnt); + +/* Make sure we are dealing with the correct timer IRQ */ +GUEST_ASSERT_2 (intid == timer_irq, intid, timer_irq); + +/* Basic 'timer condition met' check */ +GUEST_ASSERT_3 (xcnt >= cval, xcnt, cval, xcnt_diff_us); +GUEST_ASSERT_1 (xctl &CTL_ISTATUS , xctl); +} + +static void guest_irq_handler (struct ex_regs *regs) +{ +unsigned int intid =gic_get_and_ack_irq (); +uint32_t cpu =get_vcpuid (); +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; + +guest_validate_irq (intid, shared_data); + +WRITE_ONCE (shared_data->nr_iter, shared_data->nr_iter +1 ); + +gic_set_eoi (intid); +} + +static void guest_run_stage (struct test_vcpu_shared_data *shared_data, +enum guest_stage stage) +{ +uint32_t irq_iter, config_iter; + + shared_data->guest_stage = stage; + shared_data->nr_iter =0 ; + +for (config_iter =0 ; config_iter < test_args.nr_iter; config_iter++) { +/* Setup the next interrupt */ +guest_configure_timer_action (shared_data); + +/* Setup a timeout for the interrupt to arrive */ +udelay (msecs_to_usecs (test_args.timer_period_ms) + +TIMER_TEST_ERR_MARGIN_US ); + + irq_iter =READ_ONCE (shared_data->nr_iter); +GUEST_ASSERT_2 (config_iter +1 == irq_iter, + config_iter +1 , irq_iter); + } +} + +static void guest_code (void ) +{ +uint32_t cpu =get_vcpuid (); +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; + +local_irq_disable (); + +gic_init (GIC_V3 , test_args.nr_vcpus, + (void *)GICD_BASE_GPA , (void *)GICR_BASE_GPA ); + +timer_set_ctl (VIRTUAL ,CTL_IMASK ); +timer_set_ctl (PHYSICAL ,CTL_IMASK ); + +gic_irq_enable (VTIMER_IRQ ); +gic_irq_enable (PTIMER_IRQ ); +local_irq_enable (); + +guest_run_stage (shared_data,GUEST_STAGE_VTIMER_CVAL ); +guest_run_stage (shared_data,GUEST_STAGE_VTIMER_TVAL ); +guest_run_stage (shared_data,GUEST_STAGE_PTIMER_CVAL ); +guest_run_stage (shared_data,GUEST_STAGE_PTIMER_TVAL ); + +GUEST_DONE (); +} + +static void *test_vcpu_run (void *arg) +{ +struct ucall uc; +struct test_vcpu *vcpu = arg; +struct kvm_vm *vm = vcpu->vm; +uint32_t vcpuid = vcpu->vcpuid; +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[vcpuid]; + +vcpu_run (vm, vcpuid); + +switch (get_ucall (vm, vcpuid, &uc)) { +case UCALL_SYNC : +case UCALL_DONE : +break ; +case UCALL_ABORT : +sync_global_from_guest (vm, *shared_data); +TEST_FAIL ("%s at %s:%ld\n\tvalues: %lu, %lu; %lu, vcpu: %u; stage: %u; iter: %u" , + (const char *)uc.args[0 ], __FILE__, uc.args[1 ], + uc.args[2 ], uc.args[3 ], uc.args[4 ], vcpuid, + shared_data->guest_stage, shared_data->nr_iter); +break ; +default : +TEST_FAIL ("Unexpected guest exit\n" ); + } + +return NULL ; +} + +static void test_run (struct kvm_vm *vm) +{ +int i, ret; + +for (i =0 ; i < test_args.nr_vcpus; i++) { + ret =pthread_create (&test_vcpu[i].pt_vcpu_run,NULL , + test_vcpu_run, &test_vcpu[i]); +TEST_ASSERT (!ret,"Failed to create vCPU-%d pthread\n" , i); + } + +for (i =0 ; i < test_args.nr_vcpus; i++) +pthread_join (test_vcpu[i].pt_vcpu_run,NULL ); +} + +static struct kvm_vm *test_vm_create (void ) +{ +struct kvm_vm *vm; +unsigned int i; +int nr_vcpus = test_args.nr_vcpus; + + vm =vm_create_default_with_vcpus (nr_vcpus,0 ,0 , guest_code,NULL ); + +vm_init_descriptor_tables (vm); +vm_install_exception_handler (vm,VECTOR_IRQ_CURRENT , guest_irq_handler); + +for (i =0 ; i < nr_vcpus; i++) { +vcpu_init_descriptor_tables (vm, i); + + test_vcpu[i].vcpuid = i; + test_vcpu[i].vm = vm; + } + +ucall_init (vm,NULL ); +vm_vcpuid_map_init (vm); +vgic_v3_setup (vm,GICD_BASE_GPA ,GICR_BASE_GPA ); + +/* Make all the test's cmdline args visible to the guest */ +sync_global_to_guest (vm, test_args); + +return vm; +} + +static void test_print_help (char *name) +{ +pr_info ("Usage: %s [-h] [-n nr_vcpus] [-i iterations] [-p timer_period_ms]\n" , + name); +pr_info ("\t-n: Number of vCPUs to configure (default: %u; max: %u)\n" , +NR_VCPUS_DEF ,KVM_MAX_VCPUS ); +pr_info ("\t-i: Number of iterations per stage (default: %u)\n" , +NR_TEST_ITERS_DEF ); +pr_info ("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n" , +TIMER_TEST_PERIOD_MS_DEF ); +pr_info ("\t-h: print this help screen\n" ); +} + +static bool parse_args (int argc,char *argv[]) +{ +int opt; + +while ((opt =getopt (argc, argv,"hn:i:p:" )) !=-1 ) { +switch (opt) { +case 'n' : + test_args.nr_vcpus =atoi (optarg); +if (test_args.nr_vcpus <=0 ) { +pr_info ("Positive value needed for -n\n" ); + goto err; + }else if (test_args.nr_vcpus >KVM_MAX_VCPUS ) { +pr_info ("Max allowed vCPUs: %u\n" , +KVM_MAX_VCPUS ); + goto err; + } +break ; +case 'i' : + test_args.nr_iter =atoi (optarg); +if (test_args.nr_iter <=0 ) { +pr_info ("Positive value needed for -i\n" ); + goto err; + } +break ; +case 'p' : + test_args.timer_period_ms =atoi (optarg); +if (test_args.timer_period_ms <=0 ) { +pr_info ("Positive value needed for -p\n" ); + goto err; + } +break ; +case 'h' : +default : + goto err; + } + } + +return true; + +err: +test_print_help (argv[0 ]); +return false; +} + +int main (int argc,char *argv[]) +{ +struct kvm_vm *vm; + +/* Tell stdout not to buffer its content */ +setbuf (stdout,NULL ); + +if (!parse_args (argc, argv)) +exit (KSFT_SKIP ); + + vm =test_vm_create (); +test_run (vm); +kvm_vm_free (vm); + +return 0 ; +}Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Re: [PATCH v4 15/18] KVM: arm64: selftests: Add arch_timer test
Quoted 97 lines · Oliver Upton
Quoted 95 lines · Raghavendra Rao Ananta
Add a KVM selftest to validate the
arch_timerfunctionality. Primarily, the test sets up periodic timer interrupts and validates the basic architectural expectations upon its receipt.The test provides command-line options to configure the period of the timer, number of iterations, and number of vCPUs.
Signed-off-by Raghavendra Rao Ananta <[email protected]>Reviewed-by Andrew Jones <[email protected]>--- tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 1 + .../selftests/kvm/aarch64/arch_timer.c | 351 ++++++++++++++++++ 3 files changed, 353 insertions(+) create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.ctools/testing/selftests/kvm/.gitignore +1
-0@@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only +/aarch64/arch_timer /aarch64/debug-exceptions /aarch64/get-reg-list /aarch64/psci_cpu_on_testtools/testing/selftests/kvm/Makefile +1
-0@@ -84,6 +84,7 @@ TEST_GEN_PROGS_x86_64 += set_memory_region_test TEST_GEN_PROGS_x86_64 += steal_time TEST_GEN_PROGS_x86_64 += kvm_binary_stats_test +TEST_GEN_PROGS_aarch64 += aarch64/arch_timer TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list TEST_GEN_PROGS_aarch64 += aarch64/psci_cpu_on_testtools/testing/selftests/kvm/aarch64/arch_timer.c new file +51
-0@@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* +* arch_timer.c - Tests the aarch64 timer IRQ functionality +* +* The test validates both the virtual and physical timer IRQs using +* CVAL and TVAL registers. This consitutes the four stages in the test. +* The guest's main thread configures the timer interrupt for a stage +* and waits for it to fire, with a timeout equal to the timer period. +* It asserts that the timeout doesn't exceed the timer period. +* +* On the other hand, upon receipt of an interrupt, the guest's interrupt +* handler validates the interrupt by checking if the architectural state +* is in compliance with the specifications. +* +* The test provides command-line options to configure the timer's +* period (-p), number of vCPUs (-n), and iterations per stage (-i). +* +* Copyright (c) 2021, Google LLC. +*/ + +#define _GNU_SOURCE + +#include <stdlib.h> +#include <pthread.h> +#include <linux/kvm.h> +#include <linux/sizes.h> + +#include "kvm_util.h" +#include "processor.h" +#include "delay.h" +#include "arch_timer.h" +#include "gic.h" +#include "vgic.h" + +#define NR_VCPUS_DEF 4 +#define NR_TEST_ITERS_DEF 5 +#define TIMER_TEST_PERIOD_MS_DEF 10 +#define TIMER_TEST_ERR_MARGIN_US 100 + +struct test_args { +int nr_vcpus; +int nr_iter; +int timer_period_ms; +}; + +static struct test_args test_args = { + .nr_vcpus =NR_VCPUS_DEF , + .nr_iter =NR_TEST_ITERS_DEF , + .timer_period_ms =TIMER_TEST_PERIOD_MS_DEF , +}; +
Quoted 9 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c line 55
Quoted 4 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c new file +4
-0+#define msecs_to_usecs (msec) ((msec) * 1000LL) + +#define VTIMER_IRQ 27 +#define PTIMER_IRQ 30I don't know if these are guaranteed, necessarily. Probably safest to determine the IRQ# from the KVM_ARM_VCPU_TIMER_IRQ_{P,V}TIMER vCPU device attributes. Either that or write these values to the attributes.
Correct me if I'm wrong, but aren't these the default INTIDs? And I believe KVM follows the same. Or are you just concerned since these are not defined as a part of UAPI, and have a potential to change?
Regards,
Raghavendra
Quoted 298 lines
Quoted 298 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c new file +295
-1+#define GICD_BASE_GPA 0x8000000ULL +#define GICR_BASE_GPA 0x80A0000ULL + +enum guest_stage { +GUEST_STAGE_VTIMER_CVAL =1 , +GUEST_STAGE_VTIMER_TVAL , +GUEST_STAGE_PTIMER_CVAL , +GUEST_STAGE_PTIMER_TVAL , +GUEST_STAGE_MAX , +}; + +/* Shared variables between host and guest */ +struct test_vcpu_shared_data { +int nr_iter; +enum guest_stage guest_stage; +uint64_t xcnt; +}; + +struct test_vcpu { +uint32_t vcpuid; +pthread_t pt_vcpu_run; +struct kvm_vm *vm; +}; + +static struct test_vcpu test_vcpu[KVM_MAX_VCPUS ]; +static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS ]; + +static void +guest_configure_timer_action (struct test_vcpu_shared_data *shared_data) +{ +switch (shared_data->guest_stage) { +case GUEST_STAGE_VTIMER_CVAL : +timer_set_next_cval_ms (VIRTUAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_VTIMER_TVAL : +timer_set_next_tval_ms (VIRTUAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_PTIMER_CVAL : +timer_set_next_cval_ms (PHYSICAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_ENABLE ); +break ; +case GUEST_STAGE_PTIMER_TVAL : +timer_set_next_tval_ms (PHYSICAL , test_args.timer_period_ms); + shared_data->xcnt =timer_get_cntct (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_ENABLE ); +break ; +default : +GUEST_ASSERT (0 ); + } +} + +static void guest_validate_irq (unsigned int intid, +struct test_vcpu_shared_data *shared_data) +{ +enum guest_stage stage = shared_data->guest_stage; +uint64_t xcnt =0 , xcnt_diff_us, cval =0 ; +unsigned long xctl =0 ; +unsigned int timer_irq =0 ; + +if (stage ==GUEST_STAGE_VTIMER_CVAL || + stage ==GUEST_STAGE_VTIMER_TVAL ) { + xctl =timer_get_ctl (VIRTUAL ); +timer_set_ctl (VIRTUAL ,CTL_IMASK ); + xcnt =timer_get_cntct (VIRTUAL ); + cval =timer_get_cval (VIRTUAL ); + timer_irq =VTIMER_IRQ ; + }else if (stage ==GUEST_STAGE_PTIMER_CVAL || + stage ==GUEST_STAGE_PTIMER_TVAL ) { + xctl =timer_get_ctl (PHYSICAL ); +timer_set_ctl (PHYSICAL ,CTL_IMASK ); + xcnt =timer_get_cntct (PHYSICAL ); + cval =timer_get_cval (PHYSICAL ); + timer_irq =PTIMER_IRQ ; + }else { +GUEST_ASSERT (0 ); + } + + xcnt_diff_us =cycles_to_usec (xcnt - shared_data->xcnt); + +/* Make sure we are dealing with the correct timer IRQ */ +GUEST_ASSERT_2 (intid == timer_irq, intid, timer_irq); + +/* Basic 'timer condition met' check */ +GUEST_ASSERT_3 (xcnt >= cval, xcnt, cval, xcnt_diff_us); +GUEST_ASSERT_1 (xctl &CTL_ISTATUS , xctl); +} + +static void guest_irq_handler (struct ex_regs *regs) +{ +unsigned int intid =gic_get_and_ack_irq (); +uint32_t cpu =get_vcpuid (); +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; + +guest_validate_irq (intid, shared_data); + +WRITE_ONCE (shared_data->nr_iter, shared_data->nr_iter +1 ); + +gic_set_eoi (intid); +} + +static void guest_run_stage (struct test_vcpu_shared_data *shared_data, +enum guest_stage stage) +{ +uint32_t irq_iter, config_iter; + + shared_data->guest_stage = stage; + shared_data->nr_iter =0 ; + +for (config_iter =0 ; config_iter < test_args.nr_iter; config_iter++) { +/* Setup the next interrupt */ +guest_configure_timer_action (shared_data); + +/* Setup a timeout for the interrupt to arrive */ +udelay (msecs_to_usecs (test_args.timer_period_ms) + +TIMER_TEST_ERR_MARGIN_US ); + + irq_iter =READ_ONCE (shared_data->nr_iter); +GUEST_ASSERT_2 (config_iter +1 == irq_iter, + config_iter +1 , irq_iter); + } +} + +static void guest_code (void ) +{ +uint32_t cpu =get_vcpuid (); +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[cpu]; + +local_irq_disable (); + +gic_init (GIC_V3 , test_args.nr_vcpus, + (void *)GICD_BASE_GPA , (void *)GICR_BASE_GPA ); + +timer_set_ctl (VIRTUAL ,CTL_IMASK ); +timer_set_ctl (PHYSICAL ,CTL_IMASK ); + +gic_irq_enable (VTIMER_IRQ ); +gic_irq_enable (PTIMER_IRQ ); +local_irq_enable (); + +guest_run_stage (shared_data,GUEST_STAGE_VTIMER_CVAL ); +guest_run_stage (shared_data,GUEST_STAGE_VTIMER_TVAL ); +guest_run_stage (shared_data,GUEST_STAGE_PTIMER_CVAL ); +guest_run_stage (shared_data,GUEST_STAGE_PTIMER_TVAL ); + +GUEST_DONE (); +} + +static void *test_vcpu_run (void *arg) +{ +struct ucall uc; +struct test_vcpu *vcpu = arg; +struct kvm_vm *vm = vcpu->vm; +uint32_t vcpuid = vcpu->vcpuid; +struct test_vcpu_shared_data *shared_data = &vcpu_shared_data[vcpuid]; + +vcpu_run (vm, vcpuid); + +switch (get_ucall (vm, vcpuid, &uc)) { +case UCALL_SYNC : +case UCALL_DONE : +break ; +case UCALL_ABORT : +sync_global_from_guest (vm, *shared_data); +TEST_FAIL ("%s at %s:%ld\n\tvalues: %lu, %lu; %lu, vcpu: %u; stage: %u; iter: %u" , + (const char *)uc.args[0 ], __FILE__, uc.args[1 ], + uc.args[2 ], uc.args[3 ], uc.args[4 ], vcpuid, + shared_data->guest_stage, shared_data->nr_iter); +break ; +default : +TEST_FAIL ("Unexpected guest exit\n" ); + } + +return NULL ; +} + +static void test_run (struct kvm_vm *vm) +{ +int i, ret; + +for (i =0 ; i < test_args.nr_vcpus; i++) { + ret =pthread_create (&test_vcpu[i].pt_vcpu_run,NULL , + test_vcpu_run, &test_vcpu[i]); +TEST_ASSERT (!ret,"Failed to create vCPU-%d pthread\n" , i); + } + +for (i =0 ; i < test_args.nr_vcpus; i++) +pthread_join (test_vcpu[i].pt_vcpu_run,NULL ); +} + +static struct kvm_vm *test_vm_create (void ) +{ +struct kvm_vm *vm; +unsigned int i; +int nr_vcpus = test_args.nr_vcpus; + + vm =vm_create_default_with_vcpus (nr_vcpus,0 ,0 , guest_code,NULL ); + +vm_init_descriptor_tables (vm); +vm_install_exception_handler (vm,VECTOR_IRQ_CURRENT , guest_irq_handler); + +for (i =0 ; i < nr_vcpus; i++) { +vcpu_init_descriptor_tables (vm, i); + + test_vcpu[i].vcpuid = i; + test_vcpu[i].vm = vm; + } + +ucall_init (vm,NULL ); +vm_vcpuid_map_init (vm); +vgic_v3_setup (vm,GICD_BASE_GPA ,GICR_BASE_GPA ); + +/* Make all the test's cmdline args visible to the guest */ +sync_global_to_guest (vm, test_args); + +return vm; +} + +static void test_print_help (char *name) +{ +pr_info ("Usage: %s [-h] [-n nr_vcpus] [-i iterations] [-p timer_period_ms]\n" , + name); +pr_info ("\t-n: Number of vCPUs to configure (default: %u; max: %u)\n" , +NR_VCPUS_DEF ,KVM_MAX_VCPUS ); +pr_info ("\t-i: Number of iterations per stage (default: %u)\n" , +NR_TEST_ITERS_DEF ); +pr_info ("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n" , +TIMER_TEST_PERIOD_MS_DEF ); +pr_info ("\t-h: print this help screen\n" ); +} + +static bool parse_args (int argc,char *argv[]) +{ +int opt; + +while ((opt =getopt (argc, argv,"hn:i:p:" )) !=-1 ) { +switch (opt) { +case 'n' : + test_args.nr_vcpus =atoi (optarg); +if (test_args.nr_vcpus <=0 ) { +pr_info ("Positive value needed for -n\n" ); + goto err; + }else if (test_args.nr_vcpus >KVM_MAX_VCPUS ) { +pr_info ("Max allowed vCPUs: %u\n" , +KVM_MAX_VCPUS ); + goto err; + } +break ; +case 'i' : + test_args.nr_iter =atoi (optarg); +if (test_args.nr_iter <=0 ) { +pr_info ("Positive value needed for -i\n" ); + goto err; + } +break ; +case 'p' : + test_args.timer_period_ms =atoi (optarg); +if (test_args.timer_period_ms <=0 ) { +pr_info ("Positive value needed for -p\n" ); + goto err; + } +break ; +case 'h' : +default : + goto err; + } + } + +return true; + +err: +test_print_help (argv[0 ]); +return false; +} + +int main (int argc,char *argv[]) +{ +struct kvm_vm *vm; + +/* Tell stdout not to buffer its content */ +setbuf (stdout,NULL ); + +if (!parse_args (argc, argv)) +exit (KSFT_SKIP ); + + vm =test_vm_create (); +test_run (vm); +kvm_vm_free (vm); + +return 0 ; +} --2.33.0.153.gba50c8fa24-goog
PATCH v4 16/18 KVM: arm64: selftests: arch_timer: Support vCPU migration
In reply to Raghavendra Rao AnantaSince the timer stack (hardware and KVM) is per-CPU, there are potential chances for races to occur when the scheduler decides to migrate a vCPU thread to a different physical CPU. Hence, include an option to stress-test this part as well by forcing the vCPUs to migrate across physical CPUs in the system at a particular rate.
Originally, the bug for the fix with commit 3134cc8beb69d0d ("KVM: arm64: vgic: Resample HW pending state on deactivation") was discovered using arch_timer test with vCPU migrations and can be easily reproduced.
--- .../selftests/kvm/aarch64/arch_timer.c | 113 +++++++++++++++++- 1 file changed, 112 insertions(+), 1 deletion(-)
tools/testing/selftests/kvm/aarch64/arch_timer.c +112 -1
@@ -14,6 +14,8 @@* * The test provides command-line options to configure the timer's * period (-p), number of vCPUs (-n), and iterations per stage (-i). +* To stress-test the timer stack even more, an option to migrate the +* vCPUs across pCPUs (-m), at a particular rate, is also provided. * * Copyright (c) 2021, Google LLC. */
@@ -24,6 +26,8 @@#include <pthread.h> #include <linux/kvm.h> #include <linux/sizes.h> +#include <linux/bitmap.h> +#include <sys/sysinfo.h> #include "kvm_util.h" #include "processor.h"
@@ -36,17 +40,20 @@#define NR_TEST_ITERS_DEF 5#define TIMER_TEST_PERIOD_MS_DEF 10#define TIMER_TEST_ERR_MARGIN_US 100 +#define TIMER_TEST_MIGRATION_FREQ_MS 2struct test_args {int nr_vcpus;int nr_iter;int timer_period_ms; +int migration_freq_ms; };static struct test_args test_args = { .nr_vcpus =NR_VCPUS_DEF , .nr_iter =NR_TEST_ITERS_DEF , .timer_period_ms =TIMER_TEST_PERIOD_MS_DEF , + .migration_freq_ms =TIMER_TEST_MIGRATION_FREQ_MS , };#define msecs_to_usecs (msec) ((msec) * 1000LL)
@@ -81,6 +88,9 @@ struct test_vcpu {static struct test_vcpu test_vcpu[KVM_MAX_VCPUS ];static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS ]; +static unsigned long *vcpu_done_map; +static pthread_mutex_t vcpu_done_map_lock; +static void guest_configure_timer_action (struct test_vcpu_shared_data *shared_data) {
@@ -216,6 +226,11 @@ static void *test_vcpu_run(void *arg)vcpu_run (vm, vcpuid); +/* Currently, any exit from guest is an indication of completion */ +pthread_mutex_lock (&vcpu_done_map_lock); +set_bit (vcpuid, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); +switch (get_ucall (vm, vcpuid, &uc)) {case UCALL_SYNC :case UCALL_DONE :
@@ -234,9 +249,76 @@ static void *test_vcpu_run(void *arg)return NULL ; } +static uint32_t test_get_pcpu (void ) +{ +uint32_t pcpu; +unsigned int nproc_conf; +cpu_set_t online_cpuset; + + nproc_conf =get_nprocs_conf (); +sched_getaffinity (0 ,sizeof (cpu_set_t), &online_cpuset); + +/* Randomly find an available pCPU to place a vCPU on */ +do { + pcpu =rand () % nproc_conf; + }while (!CPU_ISSET (pcpu, &online_cpuset)); + +return pcpu; +} +static int test_migrate_vcpu (struct test_vcpu *vcpu) +{ +int ret; +cpu_set_t cpuset; +uint32_t new_pcpu =test_get_pcpu (); + +CPU_ZERO (&cpuset); +CPU_SET (new_pcpu, &cpuset); + +pr_debug ("Migrating vCPU: %u to pCPU: %u\n" , vcpu->vcpuid, new_pcpu); + + ret =pthread_setaffinity_np (vcpu->pt_vcpu_run, +sizeof (cpuset), &cpuset); + +/* Allow the error where the vCPU thread is already finished */ +TEST_ASSERT (ret ==0 || ret ==ESRCH , +"Failed to migrate the vCPU:%u to pCPU: %u; ret: %d\n" , + vcpu->vcpuid, new_pcpu, ret); + +return ret; +} +static void *test_vcpu_migration (void *arg) +{ +unsigned int i, n_done; +bool vcpu_done; + +do { +usleep (msecs_to_usecs (test_args.migration_freq_ms)); + +for (n_done =0 , i =0 ; i < test_args.nr_vcpus; i++) { +pthread_mutex_lock (&vcpu_done_map_lock); + vcpu_done =test_bit (i, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); + +if (vcpu_done) { + n_done++; +continue ; + } + +test_migrate_vcpu (&test_vcpu[i]); + } + }while (test_args.nr_vcpus != n_done); + +return NULL ; +} +static void test_run (struct kvm_vm *vm) {int i, ret; +pthread_t pt_vcpu_migration; + +pthread_mutex_init (&vcpu_done_map_lock,NULL ); + vcpu_done_map =bitmap_alloc (test_args.nr_vcpus); +TEST_ASSERT (vcpu_done_map,"Failed to allocate vcpu done bitmap\n" );for (i =0 ; i < test_args.nr_vcpus; i++) { ret = pthread_create(&test_vcpu[i].pt_vcpu_run, NULL,
@@ -244,8 +326,23 @@ static void test_run(struct kvm_vm *vm)TEST_ASSERT (!ret,"Failed to create vCPU-%d pthread\n" , i); } +/* Spawn a thread to control the vCPU migrations */ +if (test_args.migration_freq_ms) { +srand (time (NULL )); + + ret =pthread_create (&pt_vcpu_migration,NULL , + test_vcpu_migration,NULL ); +TEST_ASSERT (!ret,"Failed to create the migration pthread\n" ); + } + +for (i =0 ; i < test_args.nr_vcpus; i++)pthread_join (test_vcpu[i].pt_vcpu_run,NULL ); + +if (test_args.migration_freq_ms) +pthread_join (pt_vcpu_migration,NULL ); + +bitmap_free (vcpu_done_map); }static struct kvm_vm *test_vm_create (void )
@@ -286,6 +383,8 @@ static void test_print_help(char *name) NR_TEST_ITERS_DEF);pr_info ("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n" ,TIMER_TEST_PERIOD_MS_DEF ); +pr_info ("\t-m: Frequency (in ms) of vCPUs to migrate to different pCPU. 0 to turn off (default: %u)\n" , +TIMER_TEST_MIGRATION_FREQ_MS );pr_info ("\t-h: print this help screen\n" ); }
@@ -293,7 +392,7 @@ static bool parse_args(int argc, char *argv[]) {int opt; -while ((opt =getopt (argc, argv,"hn:i:p:" )) !=-1 ) { +while ((opt =getopt (argc, argv,"hn:i:p:m:" )) !=-1 ) {switch (opt) {case 'n' : test_args.nr_vcpus =atoi (optarg);
@@ -320,6 +419,13 @@ static bool parse_args(int argc, char *argv[]) goto err; }break ; +case 'm' : + test_args.migration_freq_ms =atoi (optarg); +if (test_args.migration_freq_ms <0 ) { +pr_info ("0 or positive value needed for -m\n" ); + goto err; + } +break ;case 'h' :default : goto err;
@@ -343,6 +449,11 @@ int main(int argc, char *argv[])if (!parse_args (argc, argv))exit (KSFT_SKIP ); +if (get_nprocs () <2 ) { +print_skip ("At least two physical CPUs needed for vCPU migration" ); +exit (KSFT_SKIP ); + } + vm =test_vm_create ();test_run (vm);kvm_vm_free (vm);
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 16/18] KVM: arm64: selftests: arch_timer: Support vCPU migration
Quoted 92 lines · Raghavendra Rao Ananta
Since the timer stack (hardware and KVM) is per-CPU, there are potential chances for races to occur when the scheduler decides to migrate a vCPU thread to a different physical CPU. Hence, include an option to stress-test this part as well by forcing the vCPUs to migrate across physical CPUs in the system at a particular rate.
Originally, the bug for the fix with commit
3134cc8beb69d0d("KVM: arm64: vgic: Resample HW pending state on deactivation") was discovered usingarch_timertest with vCPU migrations and can be easily reproduced.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/arch_timer.c | 113 +++++++++++++++++- 1 file changed, 112 insertions(+), 1 deletion(-)tools/testing/selftests/kvm/aarch64/arch_timer.c +21
-0@@ -14,6 +14,8 @@* * The test provides command-line options to configure the timer's * period (-p), number of vCPUs (-n), and iterations per stage (-i). +* To stress-test the timer stack even more, an option to migrate the +* vCPUs across pCPUs (-m), at a particular rate, is also provided. * * Copyright (c) 2021, Google LLC. */ @@ -24,6 +26,8 @@#include <pthread.h> #include <linux/kvm.h> #include <linux/sizes.h> +#include <linux/bitmap.h> +#include <sys/sysinfo.h> #include "kvm_util.h" #include "processor.h" @@ -36,17 +40,20 @@#define NR_TEST_ITERS_DEF 5#define TIMER_TEST_PERIOD_MS_DEF 10#define TIMER_TEST_ERR_MARGIN_US 100 +#define TIMER_TEST_MIGRATION_FREQ_MS 2struct test_args {int nr_vcpus;int nr_iter;int timer_period_ms; +int migration_freq_ms; };static struct test_args test_args = { .nr_vcpus =NR_VCPUS_DEF , .nr_iter =NR_TEST_ITERS_DEF , .timer_period_ms =TIMER_TEST_PERIOD_MS_DEF , + .migration_freq_ms =TIMER_TEST_MIGRATION_FREQ_MS , };#define msecs_to_usecs (msec) ((msec) * 1000LL)@@ -81,6 +88,9 @@ struct test_vcpu {static struct test_vcpu test_vcpu[KVM_MAX_VCPUS ];static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS ]; +static unsigned long *vcpu_done_map; +static pthread_mutex_t vcpu_done_map_lock; +static void guest_configure_timer_action (struct test_vcpu_shared_data *shared_data) {@@ -216,6 +226,11 @@ static void *test_vcpu_run(void *arg)vcpu_run (vm, vcpuid); +/* Currently, any exit from guest is an indication of completion */ +pthread_mutex_lock (&vcpu_done_map_lock); +set_bit (vcpuid, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); +switch (get_ucall (vm, vcpuid, &uc)) {case UCALL_SYNC :case UCALL_DONE :@@ -234,9 +249,76 @@ static void *test_vcpu_run(void *arg)return NULL ; } +static uint32_t test_get_pcpu (void ) +{ +uint32_t pcpu; +unsigned int nproc_conf; +cpu_set_t online_cpuset; +
tools/testing/selftests/kvm/aarch64/arch_timer.c static void *test_vcpu_run(void *arg) · line 267
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +10
-0+ nproc_conf =get_nprocs_conf (); +sched_getaffinity (0 ,sizeof (cpu_set_t), &online_cpuset); + +/* Randomly find an available pCPU to place a vCPU on */ +do { + pcpu =rand () % nproc_conf; + }while (!CPU_ISSET (pcpu, &online_cpuset)); + +return pcpu; +}
Missing blank line here.
Quoted 11 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +11
-0+static int test_migrate_vcpu (struct test_vcpu *vcpu) +{ +int ret; +cpu_set_t cpuset; +uint32_t new_pcpu =test_get_pcpu (); + +CPU_ZERO (&cpuset); +CPU_SET (new_pcpu, &cpuset); + +pr_debug ("Migrating vCPU: %u to pCPU: %u\n" , vcpu->vcpuid, new_pcpu); +
tools/testing/selftests/kvm/aarch64/arch_timer.c static void *test_vcpu_run(void *arg) · line 288
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +10
-0+ ret =pthread_setaffinity_np (vcpu->pt_vcpu_run, +sizeof (cpuset), &cpuset); + +/* Allow the error where the vCPU thread is already finished */ +TEST_ASSERT (ret ==0 || ret ==ESRCH , +"Failed to migrate the vCPU:%u to pCPU: %u; ret: %d\n" , + vcpu->vcpuid, new_pcpu, ret); + +return ret; +}
Missing blank line here.
Quoted 93 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +55
-1+static void *test_vcpu_migration (void *arg) +{ +unsigned int i, n_done; +bool vcpu_done; + +do { +usleep (msecs_to_usecs (test_args.migration_freq_ms)); + +for (n_done =0 , i =0 ; i < test_args.nr_vcpus; i++) { +pthread_mutex_lock (&vcpu_done_map_lock); + vcpu_done =test_bit (i, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); + +if (vcpu_done) { + n_done++; +continue ; + } + +test_migrate_vcpu (&test_vcpu[i]); + } + }while (test_args.nr_vcpus != n_done); + +return NULL ; +} +static void test_run (struct kvm_vm *vm) {int i, ret; +pthread_t pt_vcpu_migration; + +pthread_mutex_init (&vcpu_done_map_lock,NULL ); + vcpu_done_map =bitmap_alloc (test_args.nr_vcpus); +TEST_ASSERT (vcpu_done_map,"Failed to allocate vcpu done bitmap\n" );for (i =0 ; i < test_args.nr_vcpus; i++) { ret = pthread_create(&test_vcpu[i].pt_vcpu_run, NULL,@@ -244,8 +326,23 @@ static void test_run(struct kvm_vm *vm)TEST_ASSERT (!ret,"Failed to create vCPU-%d pthread\n" , i); } +/* Spawn a thread to control the vCPU migrations */ +if (test_args.migration_freq_ms) { +srand (time (NULL )); + + ret =pthread_create (&pt_vcpu_migration,NULL , + test_vcpu_migration,NULL ); +TEST_ASSERT (!ret,"Failed to create the migration pthread\n" ); + } + +for (i =0 ; i < test_args.nr_vcpus; i++)pthread_join (test_vcpu[i].pt_vcpu_run,NULL ); + +if (test_args.migration_freq_ms) +pthread_join (pt_vcpu_migration,NULL ); + +bitmap_free (vcpu_done_map); }static struct kvm_vm *test_vm_create (void )@@ -286,6 +383,8 @@ static void test_print_help(char *name) NR_TEST_ITERS_DEF);pr_info ("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n" ,TIMER_TEST_PERIOD_MS_DEF ); +pr_info ("\t-m: Frequency (in ms) of vCPUs to migrate to different pCPU. 0 to turn off (default: %u)\n" , +TIMER_TEST_MIGRATION_FREQ_MS );pr_info ("\t-h: print this help screen\n" ); }@@ -293,7 +392,7 @@ static bool parse_args(int argc, char *argv[]) {int opt; -while ((opt =getopt (argc, argv,"hn:i:p:" )) !=-1 ) { +while ((opt =getopt (argc, argv,"hn:i:p:m:" )) !=-1 ) {switch (opt) {case 'n' : test_args.nr_vcpus =atoi (optarg);@@ -320,6 +419,13 @@ static bool parse_args(int argc, char *argv[]) goto err; }break ; +case 'm' : + test_args.migration_freq_ms =atoi (optarg); +if (test_args.migration_freq_ms <0 ) { +pr_info ("0 or positive value needed for -m\n" ); + goto err; + } +break ;case 'h' :default : goto err;
tools/testing/selftests/kvm/aarch64/arch_timer.c int main(int argc, char *argv[]) · line 452
Quoted 4 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +1
-0@@ -343,6 +449,11 @@ int main(int argc, char *argv[])if (!parse_args (argc, argv))exit (KSFT_SKIP ); +if (get_nprocs () <2 ) {
Even though the chance of being on a uniprocessor is low and the migration test is now on by default, we could still do
if (test_args.migration_freq_ms && get_nprocs() < 2)
since that's why the skip message says it needs two cpus.
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +4
-0+print_skip ("At least two physical CPUs needed for vCPU migration" ); +exit (KSFT_SKIP ); + } + vm =test_vm_create ();test_run (vm);kvm_vm_free (vm);Signature · 1 line
2.33.0.153.gba50c8fa24-goog
Thanks,
drew
_______________________________________________
kvmarm mailing list
[email protected]
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 16/18] KVM: arm64: selftests: arch_timer: Support vCPU migration
Quoted 227 lines · Andrew Jones
Quoted 92 lines · Raghavendra Rao Ananta
Since the timer stack (hardware and KVM) is per-CPU, there are potential chances for races to occur when the scheduler decides to migrate a vCPU thread to a different physical CPU. Hence, include an option to stress-test this part as well by forcing the vCPUs to migrate across physical CPUs in the system at a particular rate.
Originally, the bug for the fix with commit
3134cc8beb69d0d("KVM: arm64: vgic: Resample HW pending state on deactivation") was discovered usingarch_timertest with vCPU migrations and can be easily reproduced.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/arch_timer.c | 113 +++++++++++++++++- 1 file changed, 112 insertions(+), 1 deletion(-)tools/testing/selftests/kvm/aarch64/arch_timer.c +21
-0@@ -14,6 +14,8 @@* * The test provides command-line options to configure the timer's * period (-p), number of vCPUs (-n), and iterations per stage (-i). +* To stress-test the timer stack even more, an option to migrate the +* vCPUs across pCPUs (-m), at a particular rate, is also provided. * * Copyright (c) 2021, Google LLC. */ @@ -24,6 +26,8 @@#include <pthread.h> #include <linux/kvm.h> #include <linux/sizes.h> +#include <linux/bitmap.h> +#include <sys/sysinfo.h> #include "kvm_util.h" #include "processor.h" @@ -36,17 +40,20 @@#define NR_TEST_ITERS_DEF 5#define TIMER_TEST_PERIOD_MS_DEF 10#define TIMER_TEST_ERR_MARGIN_US 100 +#define TIMER_TEST_MIGRATION_FREQ_MS 2struct test_args {int nr_vcpus;int nr_iter;int timer_period_ms; +int migration_freq_ms; };static struct test_args test_args = { .nr_vcpus =NR_VCPUS_DEF , .nr_iter =NR_TEST_ITERS_DEF , .timer_period_ms =TIMER_TEST_PERIOD_MS_DEF , + .migration_freq_ms =TIMER_TEST_MIGRATION_FREQ_MS , };#define msecs_to_usecs (msec) ((msec) * 1000LL)@@ -81,6 +88,9 @@ struct test_vcpu {static struct test_vcpu test_vcpu[KVM_MAX_VCPUS ];static struct test_vcpu_shared_data vcpu_shared_data[KVM_MAX_VCPUS ]; +static unsigned long *vcpu_done_map; +static pthread_mutex_t vcpu_done_map_lock; +static void guest_configure_timer_action (struct test_vcpu_shared_data *shared_data) {@@ -216,6 +226,11 @@ static void *test_vcpu_run(void *arg)vcpu_run (vm, vcpuid); +/* Currently, any exit from guest is an indication of completion */ +pthread_mutex_lock (&vcpu_done_map_lock); +set_bit (vcpuid, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); +switch (get_ucall (vm, vcpuid, &uc)) {case UCALL_SYNC :case UCALL_DONE :@@ -234,9 +249,76 @@ static void *test_vcpu_run(void *arg)return NULL ; } +static uint32_t test_get_pcpu (void ) +{ +uint32_t pcpu; +unsigned int nproc_conf; +cpu_set_t online_cpuset; +tools/testing/selftests/kvm/aarch64/arch_timer.c static void *test_vcpu_run(void *arg) · line 267
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +10
-0+ nproc_conf =get_nprocs_conf (); +sched_getaffinity (0 ,sizeof (cpu_set_t), &online_cpuset); + +/* Randomly find an available pCPU to place a vCPU on */ +do { + pcpu =rand () % nproc_conf; + }while (!CPU_ISSET (pcpu, &online_cpuset)); + +return pcpu; +}Missing blank line here.
Quoted 11 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +11
-0+static int test_migrate_vcpu (struct test_vcpu *vcpu) +{ +int ret; +cpu_set_t cpuset; +uint32_t new_pcpu =test_get_pcpu (); + +CPU_ZERO (&cpuset); +CPU_SET (new_pcpu, &cpuset); + +pr_debug ("Migrating vCPU: %u to pCPU: %u\n" , vcpu->vcpuid, new_pcpu); +tools/testing/selftests/kvm/aarch64/arch_timer.c static void *test_vcpu_run(void *arg) · line 288
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +10
-0+ ret =pthread_setaffinity_np (vcpu->pt_vcpu_run, +sizeof (cpuset), &cpuset); + +/* Allow the error where the vCPU thread is already finished */ +TEST_ASSERT (ret ==0 || ret ==ESRCH , +"Failed to migrate the vCPU:%u to pCPU: %u; ret: %d\n" , + vcpu->vcpuid, new_pcpu, ret); + +return ret; +}Missing blank line here.
Quoted 96 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +55
-1+static void *test_vcpu_migration (void *arg) +{ +unsigned int i, n_done; +bool vcpu_done; + +do { +usleep (msecs_to_usecs (test_args.migration_freq_ms)); + +for (n_done =0 , i =0 ; i < test_args.nr_vcpus; i++) { +pthread_mutex_lock (&vcpu_done_map_lock); + vcpu_done =test_bit (i, vcpu_done_map); +pthread_mutex_unlock (&vcpu_done_map_lock); + +if (vcpu_done) { + n_done++; +continue ; + } + +test_migrate_vcpu (&test_vcpu[i]); + } + }while (test_args.nr_vcpus != n_done); + +return NULL ; +} +static void test_run (struct kvm_vm *vm) {int i, ret; +pthread_t pt_vcpu_migration; + +pthread_mutex_init (&vcpu_done_map_lock,NULL ); + vcpu_done_map =bitmap_alloc (test_args.nr_vcpus); +TEST_ASSERT (vcpu_done_map,"Failed to allocate vcpu done bitmap\n" );for (i =0 ; i < test_args.nr_vcpus; i++) { ret = pthread_create(&test_vcpu[i].pt_vcpu_run, NULL,@@ -244,8 +326,23 @@ static void test_run(struct kvm_vm *vm)TEST_ASSERT (!ret,"Failed to create vCPU-%d pthread\n" , i); } +/* Spawn a thread to control the vCPU migrations */ +if (test_args.migration_freq_ms) { +srand (time (NULL )); + + ret =pthread_create (&pt_vcpu_migration,NULL , + test_vcpu_migration,NULL ); +TEST_ASSERT (!ret,"Failed to create the migration pthread\n" ); + } + +for (i =0 ; i < test_args.nr_vcpus; i++)pthread_join (test_vcpu[i].pt_vcpu_run,NULL ); + +if (test_args.migration_freq_ms) +pthread_join (pt_vcpu_migration,NULL ); + +bitmap_free (vcpu_done_map); }static struct kvm_vm *test_vm_create (void )@@ -286,6 +383,8 @@ static void test_print_help(char *name) NR_TEST_ITERS_DEF);pr_info ("\t-p: Periodicity (in ms) of the guest timer (default: %u)\n" ,TIMER_TEST_PERIOD_MS_DEF ); +pr_info ("\t-m: Frequency (in ms) of vCPUs to migrate to different pCPU. 0 to turn off (default: %u)\n" , +TIMER_TEST_MIGRATION_FREQ_MS );pr_info ("\t-h: print this help screen\n" ); }@@ -293,7 +392,7 @@ static bool parse_args(int argc, char *argv[]) {int opt; -while ((opt =getopt (argc, argv,"hn:i:p:" )) !=-1 ) { +while ((opt =getopt (argc, argv,"hn:i:p:m:" )) !=-1 ) {switch (opt) {case 'n' : test_args.nr_vcpus =atoi (optarg);@@ -320,6 +419,13 @@ static bool parse_args(int argc, char *argv[]) goto err; }break ; +case 'm' : + test_args.migration_freq_ms =atoi (optarg); +if (test_args.migration_freq_ms <0 ) { +pr_info ("0 or positive value needed for -m\n" ); + goto err; + } +break ;case 'h' :default : goto err;@@ -343,6 +449,11 @@ int main(int argc, char *argv[])if (!parse_args (argc, argv))exit (KSFT_SKIP );
Quoted 7 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c int main(int argc, char *argv[]) · line 452
Quoted 1 line
tools/testing/selftests/kvm/aarch64/arch_timer.c +1
-0+if (get_nprocs () <2 ) {Even though the chance of being on a uniprocessor is low and the migration test is now on by default, we could still do
if (test_args.migration_freq_ms &&
get_nprocs()< 2)
huh, I had the check earlier; must have dropped it somewhere. Will place it back.
And I'll fix all the blank line comments.
Regards,
Raghavendra
Quoted 18 lines
since that's why the skip message says it needs two cpus.
Quoted 10 lines
tools/testing/selftests/kvm/aarch64/arch_timer.c +4
-1+print_skip ("At least two physical CPUs needed for vCPU migration" ); +exit (KSFT_SKIP ); + } + vm =test_vm_create ();test_run (vm);kvm_vm_free (vm); --2.33.0.153.gba50c8fa24-goog
Reviewed-by Andrew Jones <[email protected]>Thanks,
drew
PATCH v4 17/18 KVM: arm64: selftests: Replace ARM64_SYS_REG with ARM64_SYS_KVM_REG
In reply to Raghavendra Rao AnantaWith the introduction of ARM64_SYS_KVM_REG, that takes the system register encodings from sysreg.h directly, replace all the users of ARM64_SYS_REG, relyiing on the encodings created in processor.h, with ARM64_SYS_KVM_REG.
--- .../selftests/kvm/aarch64/debug-exceptions.c | 2 +- .../selftests/kvm/aarch64/psci_cpu_on_test.c | 3 ++- .../selftests/kvm/include/aarch64/processor.h | 10 ---------- .../selftests/kvm/lib/aarch64/processor.c | 16 ++++++++-------- 4 files changed, 11 insertions(+), 20 deletions(-)
tools/testing/selftests/kvm/aarch64/debug-exceptions.c +1 -1
@@ -190,7 +190,7 @@ static int debug_version(struct kvm_vm *vm) {uint64_t id_aa64dfr0; -get_reg (vm,VCPU_ID ,ARM64_SYS_REG (ID_AA64DFR0_EL1 ), &id_aa64dfr0); +get_reg (vm,VCPU_ID ,ARM64_SYS_KVM_REG (SYS_ID_AA64DFR0_EL1 ), &id_aa64dfr0);return id_aa64dfr0 &0xf ; }
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +2 -1
@@ -91,7 +91,8 @@ int main(void) init.features[0 ] |= (1 <<KVM_ARM_VCPU_POWER_OFF );aarch64_vcpu_add_default (vm,VCPU_ID_TARGET , &init, guest_main); -get_reg (vm,VCPU_ID_TARGET ,ARM64_SYS_REG (MPIDR_EL1 ), &target_mpidr); +get_reg (vm,VCPU_ID_TARGET , +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &target_mpidr);vcpu_args_set (vm,VCPU_ID_SOURCE ,1 , target_mpidr &MPIDR_HWID_BITMASK );vcpu_run (vm,VCPU_ID_SOURCE );
tools/testing/selftests/kvm/include/aarch64/processor.h +0 -10
@@ -16,16 +16,6 @@#define ARM64_CORE_REG (x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \ KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x)) -#define CPACR_EL1 3, 0, 1, 0, 2 -#define TCR_EL1 3, 0, 2, 0, 2 -#define MAIR_EL1 3, 0, 10, 2, 0 -#define MPIDR_EL1 3, 0, 0, 0, 5 -#define TTBR0_EL1 3, 0, 2, 0, 0 -#define SCTLR_EL1 3, 0, 1, 0, 0 -#define VBAR_EL1 3, 0, 12, 0, 0 - -#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 -/* * ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert * SYS_* register definitions in sysreg.h to use in KVM
tools/testing/selftests/kvm/lib/aarch64/processor.c +8 -8
@@ -240,10 +240,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini* Enable FP/ASIMD to avoid trapping when accessing Q0-Q15 * registers, which the variable argument list macros do. */ -set_reg (vm, vcpuid,ARM64_SYS_REG (CPACR_EL1 ),3 <<20 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_CPACR_EL1 ),3 <<20 ); -get_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), &sctlr_el1); -get_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), &tcr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), &sctlr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), &tcr_el1);switch (vm->mode) {case VM_MODE_P52V48_4K :
@@ -281,10 +281,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini tcr_el1 |= (1 <<8 ) | (1 <<10 ) | (3 <<12 ); tcr_el1 |= (64 - vm->va_bits)/* T0SZ */ ; -set_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), sctlr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), tcr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (MAIR_EL1 ),DEFAULT_MAIR_EL1 ); -set_reg (vm, vcpuid,ARM64_SYS_REG (TTBR0_EL1 ), vm->pgd); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), sctlr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), tcr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_MAIR_EL1 ),DEFAULT_MAIR_EL1 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TTBR0_EL1 ), vm->pgd); }void vcpu_dump (FILE *stream,struct kvm_vm *vm,uint32_t vcpuid,uint8_t indent)
@@ -370,7 +370,7 @@ void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid) {extern char vectors; -set_reg (vm, vcpuid,ARM64_SYS_REG (VBAR_EL1 ), (uint64_t )&vectors); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_VBAR_EL1 ), (uint64_t )&vectors); }void route_exception (struct ex_regs *regs,int vector)
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 17/18] KVM: arm64: selftests: Replace ARM64_SYS_REG with ARM64_SYS_KVM_REG
Quoted 5 lines · Raghavendra Rao Ananta
With the introduction of
ARM64_SYS_KVM_REG, that takes the system register encodings fromsysreg.hdirectly, replace all the users ofARM64_SYS_REG, relyiing on the encodings created inprocessor.h, withARM64_SYS_KVM_REG.
Quoted 7 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 2 +- .../selftests/kvm/aarch64/psci_cpu_on_test.c | 3 ++- .../selftests/kvm/include/aarch64/processor.h | 10 ---------- .../selftests/kvm/lib/aarch64/processor.c | 16 ++++++++-------- 4 files changed, 11 insertions(+), 20 deletions(-)
I would probably just squash this into the patch that introduces the ARM64_SYS_KVM_REG macro.
--
Thanks,
Oliver
Re: [PATCH v4 17/18] KVM: arm64: selftests: Replace ARM64_SYS_REG with ARM64_SYS_KVM_REG
In reply to Raghavendra Rao AnantaQuoted 31 lines · Raghavendra Rao Ananta
With the introduction of
ARM64_SYS_KVM_REG, that takes the system register encodings fromsysreg.hdirectly, replace all the users ofARM64_SYS_REG, relyiing on the encodings created inprocessor.h, withARM64_SYS_KVM_REG.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 2 +- .../selftests/kvm/aarch64/psci_cpu_on_test.c | 3 ++- .../selftests/kvm/include/aarch64/processor.h | 10 ---------- .../selftests/kvm/lib/aarch64/processor.c | 16 ++++++++-------- 4 files changed, 11 insertions(+), 20 deletions(-)tools/testing/selftests/kvm/aarch64/debug-exceptions.c +1
-1@@ -190,7 +190,7 @@ static int debug_version(struct kvm_vm *vm) {uint64_t id_aa64dfr0; -get_reg (vm,VCPU_ID ,ARM64_SYS_REG (ID_AA64DFR0_EL1 ), &id_aa64dfr0); +get_reg (vm,VCPU_ID ,ARM64_SYS_KVM_REG (SYS_ID_AA64DFR0_EL1 ), &id_aa64dfr0);return id_aa64dfr0 &0xf ; }tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +0
-0
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c int main(void) · line 95
Quoted 6 lines
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +2
-1@@ -91,7 +91,8 @@ int main(void) init.features[0 ] |= (1 <<KVM_ARM_VCPU_POWER_OFF );aarch64_vcpu_add_default (vm,VCPU_ID_TARGET , &init, guest_main); -get_reg (vm,VCPU_ID_TARGET ,ARM64_SYS_REG (MPIDR_EL1 ), &target_mpidr); +get_reg (vm,VCPU_ID_TARGET , +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &target_mpidr);
nit: I'd just leave this on one line. We don't mind long lines in this part of town.
Quoted 69 lines
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +0
-0vcpu_args_set (vm,VCPU_ID_SOURCE ,1 , target_mpidr &MPIDR_HWID_BITMASK );vcpu_run (vm,VCPU_ID_SOURCE );tools/testing/selftests/kvm/include/aarch64/processor.h +0
-10@@ -16,16 +16,6 @@#define ARM64_CORE_REG (x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \ KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x)) -#define CPACR_EL1 3, 0, 1, 0, 2 -#define TCR_EL1 3, 0, 2, 0, 2 -#define MAIR_EL1 3, 0, 10, 2, 0 -#define MPIDR_EL1 3, 0, 0, 0, 5 -#define TTBR0_EL1 3, 0, 2, 0, 0 -#define SCTLR_EL1 3, 0, 1, 0, 0 -#define VBAR_EL1 3, 0, 12, 0, 0 - -#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 -/* * ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert * SYS_* register definitions in sysreg.h to use in KVM tools/testing/selftests/kvm/lib/aarch64/processor.c +8
-8@@ -240,10 +240,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini* Enable FP/ASIMD to avoid trapping when accessing Q0-Q15 * registers, which the variable argument list macros do. */ -set_reg (vm, vcpuid,ARM64_SYS_REG (CPACR_EL1 ),3 <<20 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_CPACR_EL1 ),3 <<20 ); -get_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), &sctlr_el1); -get_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), &tcr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), &sctlr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), &tcr_el1);switch (vm->mode) {case VM_MODE_P52V48_4K :@@ -281,10 +281,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini tcr_el1 |= (1 <<8 ) | (1 <<10 ) | (3 <<12 ); tcr_el1 |= (64 - vm->va_bits)/* T0SZ */ ; -set_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), sctlr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), tcr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (MAIR_EL1 ),DEFAULT_MAIR_EL1 ); -set_reg (vm, vcpuid,ARM64_SYS_REG (TTBR0_EL1 ), vm->pgd); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), sctlr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), tcr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_MAIR_EL1 ),DEFAULT_MAIR_EL1 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TTBR0_EL1 ), vm->pgd); }void vcpu_dump (FILE *stream,struct kvm_vm *vm,uint32_t vcpuid,uint8_t indent)@@ -370,7 +370,7 @@ void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid) {extern char vectors; -set_reg (vm, vcpuid,ARM64_SYS_REG (VBAR_EL1 ), (uint64_t )&vectors); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_VBAR_EL1 ), (uint64_t )&vectors); }void route_exception (struct ex_regs *regs,int vector)Signature · 1 line
2.33.0.153.gba50c8fa24-goog
I also agree with Oliver that this patch may be squashed into the one that introduces ARM64_SYS_KVM_REG.
Thanks,
drew
_______________________________________________
kvmarm mailing list
[email protected]
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 17/18] KVM: arm64: selftests: Replace ARM64_SYS_REG with ARM64_SYS_KVM_REG
Quoted 36 lines · Andrew Jones
Quoted 34 lines · Raghavendra Rao Ananta
With the introduction of
ARM64_SYS_KVM_REG, that takes the system register encodings fromsysreg.hdirectly, replace all the users ofARM64_SYS_REG, relyiing on the encodings created inprocessor.h, withARM64_SYS_KVM_REG.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- .../selftests/kvm/aarch64/debug-exceptions.c | 2 +- .../selftests/kvm/aarch64/psci_cpu_on_test.c | 3 ++- .../selftests/kvm/include/aarch64/processor.h | 10 ---------- .../selftests/kvm/lib/aarch64/processor.c | 16 ++++++++-------- 4 files changed, 11 insertions(+), 20 deletions(-)tools/testing/selftests/kvm/aarch64/debug-exceptions.c +1
-1@@ -190,7 +190,7 @@ static int debug_version(struct kvm_vm *vm) {uint64_t id_aa64dfr0; -get_reg (vm,VCPU_ID ,ARM64_SYS_REG (ID_AA64DFR0_EL1 ), &id_aa64dfr0); +get_reg (vm,VCPU_ID ,ARM64_SYS_KVM_REG (SYS_ID_AA64DFR0_EL1 ), &id_aa64dfr0);return id_aa64dfr0 &0xf ; }tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +0
-0@@ -91,7 +91,8 @@ int main(void) init.features[0 ] |= (1 <<KVM_ARM_VCPU_POWER_OFF );aarch64_vcpu_add_default (vm,VCPU_ID_TARGET , &init, guest_main);
Quoted 7 lines
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c int main(void) · line 95
Quoted 3 lines
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +2
-1-get_reg (vm,VCPU_ID_TARGET ,ARM64_SYS_REG (MPIDR_EL1 ), &target_mpidr); +get_reg (vm,VCPU_ID_TARGET , +ARM64_SYS_KVM_REG (SYS_MPIDR_EL1 ), &target_mpidr);nit: I'd just leave this on one line. We don't mind long lines in this part of town.
Good to know. I'll pull it into one line.
Quoted 65 lines
Quoted 65 lines
tools/testing/selftests/kvm/aarch64/psci_cpu_on_test.c +0
-0vcpu_args_set (vm,VCPU_ID_SOURCE ,1 , target_mpidr &MPIDR_HWID_BITMASK );vcpu_run (vm,VCPU_ID_SOURCE );tools/testing/selftests/kvm/include/aarch64/processor.h +0
-10@@ -16,16 +16,6 @@#define ARM64_CORE_REG (x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \ KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x)) -#define CPACR_EL1 3, 0, 1, 0, 2 -#define TCR_EL1 3, 0, 2, 0, 2 -#define MAIR_EL1 3, 0, 10, 2, 0 -#define MPIDR_EL1 3, 0, 0, 0, 5 -#define TTBR0_EL1 3, 0, 2, 0, 0 -#define SCTLR_EL1 3, 0, 1, 0, 0 -#define VBAR_EL1 3, 0, 12, 0, 0 - -#define ID_AA64DFR0_EL1 3, 0, 0, 5, 0 -/* * ARM64_SYS_KVM_REG(sys_reg_id): Helper macro to convert * SYS_* register definitions in sysreg.h to use in KVM tools/testing/selftests/kvm/lib/aarch64/processor.c +8
-8@@ -240,10 +240,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini* Enable FP/ASIMD to avoid trapping when accessing Q0-Q15 * registers, which the variable argument list macros do. */ -set_reg (vm, vcpuid,ARM64_SYS_REG (CPACR_EL1 ),3 <<20 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_CPACR_EL1 ),3 <<20 ); -get_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), &sctlr_el1); -get_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), &tcr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), &sctlr_el1); +get_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), &tcr_el1);switch (vm->mode) {case VM_MODE_P52V48_4K :@@ -281,10 +281,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, int vcpuid, struct kvm_vcpu_init *ini tcr_el1 |= (1 <<8 ) | (1 <<10 ) | (3 <<12 ); tcr_el1 |= (64 - vm->va_bits)/* T0SZ */ ; -set_reg (vm, vcpuid,ARM64_SYS_REG (SCTLR_EL1 ), sctlr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (TCR_EL1 ), tcr_el1); -set_reg (vm, vcpuid,ARM64_SYS_REG (MAIR_EL1 ),DEFAULT_MAIR_EL1 ); -set_reg (vm, vcpuid,ARM64_SYS_REG (TTBR0_EL1 ), vm->pgd); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_SCTLR_EL1 ), sctlr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TCR_EL1 ), tcr_el1); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_MAIR_EL1 ),DEFAULT_MAIR_EL1 ); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_TTBR0_EL1 ), vm->pgd); }void vcpu_dump (FILE *stream,struct kvm_vm *vm,uint32_t vcpuid,uint8_t indent)@@ -370,7 +370,7 @@ void vcpu_init_descriptor_tables(struct kvm_vm *vm, uint32_t vcpuid) {extern char vectors; -set_reg (vm, vcpuid,ARM64_SYS_REG (VBAR_EL1 ), (uint64_t )&vectors); +set_reg (vm, vcpuid,ARM64_SYS_KVM_REG (SYS_VBAR_EL1 ), (uint64_t )&vectors); }
Quoted 8 lines
Quoted 4 lines
tools/testing/selftests/kvm/lib/aarch64/processor.c +0
-1void route_exception (struct ex_regs *regs,int vector) --2.33.0.153.gba50c8fa24-goog
I also agree with Oliver that this patch may be squashed into the one that introduces
ARM64_SYS_KVM_REG.
Sure, will do.
Regards,
Raghavendra
Quoted 3 lines
Thanks,
drew
PATCH v4 18/18 KVM: selftests: vgic_init: Pull REDIST_REGION_ATTR_ADDR from vgic.h
In reply to Raghavendra Rao AnantaPull the definition of REDIST_REGION_ATTR_ADDR from vgic.h.
--- tools/testing/selftests/kvm/aarch64/vgic_init.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
tools/testing/selftests/kvm/aarch64/vgic_init.c +1 -2
@@ -13,11 +13,10 @@#include "test_util.h" #include "kvm_util.h" #include "processor.h" +#include "vgic.h" #define NR_VCPUS 4 -#define REDIST_REGION_ATTR_ADDR (count, base, flags, index) (((uint64_t)(count) << 52) | \ - ((uint64_t)((base) >> 16) << 16) | ((uint64_t)(flags) << 12) | index)#define REG_OFFSET (vcpu, offset) (((uint64_t)vcpu << 32) | offset)#define GICR_TYPER 0x8
Signature · 6 lines
2.33.0.153.gba50c8fa24-goog _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
Re: [PATCH v4 18/18] KVM: selftests: vgic_init: Pull REDIST_REGION_ATTR_ADDR from vgic.h
Quoted 6 lines · Raghavendra Rao Ananta
Pull the definition of
REDIST_REGION_ATTR_ADDRfromvgic.h.Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/aarch64/vgic_init.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
Just squash this into the commit where you hoist it into vgic.h. It is fine to glob it together with the other vgic changes since you're dropping it into a completely new header file.
--
Thanks,
Oliver
Re: [PATCH v4 18/18] KVM: selftests: vgic_init: Pull REDIST_REGION_ATTR_ADDR from vgic.h
Quoted 4 lines · Oliver Upton
Quoted 2 lines · Raghavendra Rao Ananta
Pull the definition of
REDIST_REGION_ATTR_ADDRfromvgic.h.
Quoted 9 lines
Quoted 4 lines
Signed-off-by Raghavendra Rao Ananta <[email protected]>--- tools/testing/selftests/kvm/aarch64/vgic_init.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)Just squash this into the commit where you hoist it into
vgic.h. It is fine to glob it together with the other vgic changes since you're dropping it into a completely new header file.
Sure, I'll squash it.
Regards,
Raghavendra
Quoted 3 lines
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Thanks,
Oliver