Patch "powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper" has been added to the 4.9-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-pseries-add-h_get_cpu_characteristics-flags-wrapper.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
191eccb1580939fb0d47deb405b82a85b0379070Mon Sep 17 00:00:00 2001
From: Michael Neuling <[email protected]>
Date: Tue, 9 Jan 2018 03:52:05 +1100
Subject: powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
From: Michael Neuling <[email protected]>
commit 191eccb1580939fb0d47deb405b82a85b0379070 upstream.
A new hypervisor call has been defined to communicate various characteristics of the CPU to guests. Add definitions for the hcall number, flags and a wrapper function.
--- arch/powerpc/include/asm/hvcall.h | 17 +++++++++++++++++ arch/powerpc/include/asm/plpar_wrappers.h | 14 ++++++++++++++ 2 files changed, 31 insertions(+)
arch/powerpc/include/asm/hvcall.h +17 -0
@@ -240,6 +240,7 @@#define H_GET_HCA_INFO 0x1B8#define H_GET_PERF_COUNT 0x1BC#define H_MANAGE_TRACE 0x1C0 +#define H_GET_CPU_CHARACTERISTICS 0x1C8#define H_FREE_LOGICAL_LAN_BUFFER 0x1D4#define H_QUERY_INT_STATE 0x1E4#define H_POLL_PENDING 0x1D8
@@ -306,6 +307,17 @@#define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3#define H_SET_MODE_RESOURCE_LE 4 +/* H_GET_CPU_CHARACTERISTICS return values */ +#define H_CPU_CHAR_SPEC_BAR_ORI31 (1ull << 63) // IBM bit 0 +#define H_CPU_CHAR_BCCTRL_SERIALISED (1ull << 62) // IBM bit 1 +#define H_CPU_CHAR_L1D_FLUSH_ORI30 (1ull << 61) // IBM bit 2 +#define H_CPU_CHAR_L1D_FLUSH_TRIG2 (1ull << 60) // IBM bit 3 +#define H_CPU_CHAR_L1D_THREAD_PRIV (1ull << 59) // IBM bit 4 + +#define H_CPU_BEHAV_FAVOUR_SECURITY (1ull << 63) // IBM bit 0 +#define H_CPU_BEHAV_L1D_FLUSH_PR (1ull << 62) // IBM bit 1 +#define H_CPU_BEHAV_BNDS_CHK_SPEC_BAR (1ull << 61) // IBM bit 2 +#ifndef __ASSEMBLY__/**
@@ -433,6 +445,11 @@ static inline unsigned long cmo_get_page }#endif /* CONFIG_PPC_PSERIES */ +struct h_cpu_char_result { +u64 character; +u64 behaviour; +}; +#endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_HVCALL_H */
arch/powerpc/include/asm/plpar_wrappers.h +14 -0
@@ -340,4 +340,18 @@ static inline long plapr_set_watchpoint0 return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0); } +static inline long plpar_get_cpu_characteristics (struct h_cpu_char_result *p) +{ +unsigned long retbuf[PLPAR_HCALL_BUFSIZE ]; +long rc; + + rc =plpar_hcall (H_GET_CPU_CHARACTERISTICS , retbuf); +if (rc ==H_SUCCESS ) { + p->character = retbuf[0 ]; + p->behaviour = retbuf[1 ]; + } + +return rc; +} +#endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
Patches currently in stable-queue which might be from [email protected] are
queue-4.9/powerpc-pseries-add-h_get_cpu_characteristics-flags-wrapper.patch queue-4.9/powerpc-pseries-query-hypervisor-for-rfi-flush-settings.patch