First batch of KVM changes for v4.14
Linus,
there is going to be a simple merge conflict between ea2800ddb20d ("kvm/x86: Avoid clearing the C-bit in rsvd_bits()") and d6321d493319 ("KVM: x86: generalize guest_cpuid_has_ helpers"). It should be resolved as in next and I've also pasted the resolution at the bottom.
Outside of kvm files, there there is an obligatory MAINTAINERS patch and a VGIF feature flag addition. Topic branch merges in s390 and powerpc are already in mainline -- would you prefer to see the expected result after merge instead of what git request-pull produces? i.e. 64 files changed, 1479 insertions(+), 768 deletions(-) vs. 88 files changed, 2041 insertions(+), 916 deletions(-)
The following changes since commit 47c5310a8dbe7c2cb9f0083daa43ceed76c257fa:
KVM: PPC: Book3S: Fix race and leak in kvm_vm_ioctl_create_spapr_tce() (2017-08-25 11:08:57 +0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/virt/kvm/kvm tags/kvm-4.14-1
for you to fetch changes up to 5f54c8b2d4fad95d1f8ecbe023ebe6038e6d3760:
Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc (2017-09-08 14:40:43 +0200)
Thanks.
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First batch of KVM changes for 4.14
Common:
- improve heuristic for boosting preempted spinlocks by ignoring VCPUs in user mode
ARM:
- fix for decoding external abort types from guests
- added support for migrating the active priority of interrupts when running a GICv2 guest on a GICv3 host
- minor cleanup
PPC:
- expose storage keys to userspace
- merge powerpc/topic/ppc-kvm branch that contains find_linux_pte_or_hugepte and POWER9 thread management cleanup
- merge kvm-ppc-fixes with a fix that missed 4.13 because of vacations
- fixes
s390:
- merge of topic branch tlb-flushing from the s390 tree to get the no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups
x86:
- emulate Hyper-V TSC frequency MSRs
- add nested INVPCID
- emulate EPTP switching VMFUNC
- support Virtual GIF
- support 5 level page tables
- speedup nested VM exits by packing byte operations
- speedup MMIO by using hardware provided physical address
- a lot of fixes and cleanups, especially nested
----------------------------------------------------------------
Andreas Schwab (1):
KVM: PPC: Book3S HV: Fix invalid use of register expression
Andrew Jones (1):
KVM: MAINTAINERS improvements
Aneesh Kumar K.V (1):
powerpc/mm: Rename find_linux_pte_or_hugepte()
Arnd Bergmann (1):
kvm: avoid uninitialized-variable warnings
Arvind Yadav (1):
KVM: arm/arm64: vgic: constify seq_operations and file_operations
Bandan Das (3):
KVM: vmx: Enable VMFUNCs
KVM: nVMX: Enable VMFUNC for the L1 hypervisor
KVM: nVMX: Emulate EPTP switching for the L1 hypervisor
Brijesh Singh (2):
KVM: SVM: Limit PFERR_NESTED_GUEST_PAGE error_code check to L1 guest
KVM: x86: Avoid guest page table walk when gpa_available is set
Christian Borntraeger (2):
Merge branch 'tlb-flushing' of git://git.kernel.org/.../s390/linux into kernelorgnext Merge tag 'kvm-s390-master-4.13-2' into kvms390/next
Christoffer Dall (2):
KVM: arm/arm64: Extract GICv3 max APRn index calculation
KVM: arm/arm64: Support uaccess of GICC_APRn
Claudio Imbrenda (1):
KVM: s390: expose no-DAT to guest and migration support
Collin L. Walling (1):
KVM: s390: Multiple Epoch Facility support
Dan Carpenter (2):
KVM: PPC: e500: Fix some NULL dereferences on error
KVM: PPC: e500mc: Fix a NULL dereference
David Hildenbrand (9):
KVM: nVMX: get rid of nested_get_page()
KVM: nVMX: get rid of nested_release_page*
KVM: nVMX: validate eptp pointer
KVM: VMX: cleanup EPTP definitions
KVM: VMX: always require WB memory type for EPT
KVM: s390: we are always in czam mode
KVM: s390: guestdbg: fix range check
KVM: s390: use WARN_ON_ONCE only for checking
KVM: s390: vsie: cleanup mcck reinjection
Denys Vlasenko (1):
KVM: SVM: delete avic_vm_id_bitmap (2 megabyte static array)
Heiko Carstens (1):
KVM: s390: sthyi: remove invalid guest write access
James Morse (1):
KVM: arm/arm64: Fix guest external abort matching
Janakarajan Natarajan (2):
KVM: SVM: Add Virtual GIF feature definition
KVM: SVM: Enable Virtual GIF feature
Jason J. Herne (1):
KVM: s390: Support Configuration z/Architecture Mode
Jim Mattson (4):
kvm: x86: Disallow illegal IA32_APIC_BASE MSR values
kvm: vmx: Raise #UD on unsupported RDRAND
kvm: vmx: Raise #UD on unsupported RDSEED
kvm: nVMX: Validate the virtual-APIC address on nested VM-entry
Ladi Prosek (1):
KVM: hyperv: support HV_X64_MSR_TSC_FREQUENCY and HV_X64_MSR_APIC_FREQUENCY
Longpeng(Mike) (4):
KVM: add spinlock optimization framework
KVM: X86: implement the logic for spinlock optimization
KVM: s390: implements the kvm_arch_vcpu_in_kernel()
KVM: arm: implements the kvm_arch_vcpu_in_kernel()
Marc Zyngier (1):
KVM: arm/arm64: vITS: Drop its_ite->lpi field
Martin Schwidefsky (4):
s390/mm: tag normal pages vs pages used in page tables s390/mm: add no-dat TLB flush optimization s390/mm: add guest ASCE TLB flush optimization s390/mm,kvm: use nodat PGSTE tag to optimize TLB flushing
Nicholas Piggin (2):
KVM: PPC: Book3S HV: POWER9 does not require secondary thread management
KVM: PPC: Book3S HV: Fix H_REGISTER_VPA VPA size validation
Paolo Bonzini (7):
KVM: nVMX: INVPCID support
kvm: nVMX: Add support for fast unprotection of nested guest page tables
KVM: x86: simplify ept_misconfig
KVM: x86: fix use of L1 MMIO areas in nested guests
KVM: VMX: cache secondary exec controls
kvm: vmx: Raise #UD on unsupported XSAVES/XRSTORS
KVM: MMU: speedup update_permission_bitmask
Paul Mackerras (4):
KVM: PPC: Book3S HV: Protect updates to spapr_tce_tables list
KVM: PPC: Book3S HV: Fix case where HDEC is treated as 32-bit on POWER9
KVM: PPC: Book3S HV: Report storage key support to userspace Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next
Radim Krčmář (7):
KVM: x86: X86_FEATURE_NRIPS is not scattered anymore
KVM: x86: generalize guest_cpuid_has_ helpers
KVM: x86: use general helpers for some cpuid manipulation Merge tag 'kvm-s390-next-4.14-2' of git://git.kernel.org/.../kvms390/linux
Merge tag 'kvm-arm-for-v4.14' of git://git.kernel.org/.../kvmarm/kvmarm
Merge branch 'kvm-ppc-next' of git://git.kernel.org/.../paulus/powerpc
Merge branch 'kvm-ppc-fixes' of git://git.kernel.org/.../paulus/powerpc
Ram Pai (1):
KVM: PPC: Book3S HV: Fix setting of storage key in H_ENTER
Wanpeng Li (6):
KVM: X86: Fix residual mmio emulation request to userspace
KVM: MMU: Fix softlockup due to mmu_lock is held too long
KVM: MMU: Bail out immediately if there is no available mmu page
KVM: VMX: use kvm_event_needs_reinjection
KVM: X86: Fix loss of exception which has not yet been injected
KVM: nVMX: Fix trying to cancel vmlauch/vmresume
Yu Zhang (5):
KVM: x86: Add return value to kvm_cpuid().
KVM: MMU: check guest CR3 reserved bits based on its physical address width.
KVM: MMU: Rename PT64_ROOT_LEVEL to PT64_ROOT_4LEVEL.
KVM: MMU: Add 5 level EPT & Shadow page table support.
KVM: MMU: Expose the LA57 feature to VM.
nixiaoming (1):
KVM: PPC: Book3S HV: Fix memory leak in kvm_vm_ioctl_get_htab_fd
Documentation/virtual/kvm/devices/arm-vgic.txt | 5 + Documentation/virtual/kvm/devices/vm.txt | 14 +- MAINTAINERS | 37 +- arch/arm/include/asm/kvm_arm.h | 1 - arch/arm/include/asm/kvm_emulate.h | 24 +- arch/arm/kvm/handle_exit.c | 2 +- arch/arm64/include/asm/kvm_emulate.h | 24 +- arch/arm64/kvm/handle_exit.c | 2 +- arch/arm64/kvm/vgic-sys-reg-v3.c | 23 +- arch/mips/kvm/mips.c | 5 + arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 + arch/powerpc/include/asm/kvm_book3s_asm.h | 4 + arch/powerpc/include/asm/pgtable.h | 10 +- arch/powerpc/include/asm/pte-walk.h | 35 ++ arch/powerpc/kernel/eeh.c | 4 +- arch/powerpc/kernel/idle_book3s.S | 35 +- arch/powerpc/kernel/io-workarounds.c | 5 +- arch/powerpc/kvm/book3s_64_mmu_hv.c | 6 +- arch/powerpc/kvm/book3s_64_mmu_radix.c | 28 +- arch/powerpc/kvm/book3s_64_vio.c | 21 +- arch/powerpc/kvm/book3s_64_vio_hv.c | 12 +- arch/powerpc/kvm/book3s_hv.c | 29 +- arch/powerpc/kvm/book3s_hv_rm_mmu.c | 20 +- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 13 +- arch/powerpc/kvm/e500.c | 8 +- arch/powerpc/kvm/e500_mmu_host.c | 3 +- arch/powerpc/kvm/e500mc.c | 4 +- arch/powerpc/kvm/powerpc.c | 5 + arch/powerpc/mm/hash_utils_64.c | 5 +- arch/powerpc/mm/hugetlbpage.c | 24 +- arch/powerpc/mm/tlb_hash64.c | 6 +- arch/powerpc/perf/callchain.c | 3 +- arch/s390/include/asm/kvm_host.h | 6 +- arch/s390/include/asm/page-states.h | 3 +- arch/s390/include/asm/page.h | 3 + arch/s390/include/asm/pgtable.h | 88 +++- arch/s390/include/asm/setup.h | 9 +- arch/s390/include/asm/tlbflush.h | 7 +- arch/s390/include/uapi/asm/kvm.h | 6 + arch/s390/kernel/suspend.c | 24 +- arch/s390/kernel/vdso.c | 2 + arch/s390/kvm/diag.c | 2 +- arch/s390/kvm/guestdbg.c | 2 +- arch/s390/kvm/interrupt.c | 6 +- arch/s390/kvm/kvm-s390.c | 118 ++++- arch/s390/kvm/kvm-s390.h | 2 + arch/s390/kvm/priv.c | 6 +- arch/s390/kvm/sigp.c | 36 +- arch/s390/kvm/sthyi.c | 8 - arch/s390/kvm/vsie.c | 16 +- arch/s390/mm/init.c | 2 + arch/s390/mm/page-states.c | 192 +++++++- arch/s390/mm/pageattr.c | 2 +- arch/s390/mm/pgalloc.c | 2 + arch/s390/mm/pgtable.c | 160 +++++-- arch/s390/tools/gen_facilities.c | 1 + arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/kvm_emulate.h | 4 +- arch/x86/include/asm/kvm_host.h | 40 +- arch/x86/include/asm/svm.h | 6 + arch/x86/include/asm/vmx.h | 22 +- arch/x86/kvm/cpuid.c | 34 +- arch/x86/kvm/cpuid.h | 186 +++----- arch/x86/kvm/emulate.c | 42 +- arch/x86/kvm/hyperv.c | 8 +- arch/x86/kvm/kvm_cache_regs.h | 2 +- arch/x86/kvm/lapic.c | 2 - arch/x86/kvm/lapic.h | 3 + arch/x86/kvm/mmu.c | 267 +++++++---- arch/x86/kvm/mmu.h | 23 +- arch/x86/kvm/mmu_audit.c | 4 +- arch/x86/kvm/mtrr.c | 2 +- arch/x86/kvm/paging_tmpl.h | 6 +- arch/x86/kvm/svm.c | 139 +++--- arch/x86/kvm/trace.h | 11 +- arch/x86/kvm/vmx.c | 620 ++++++++++++++++++------- arch/x86/kvm/x86.c | 213 +++++---- arch/x86/kvm/x86.h | 54 ++- drivers/s390/char/sclp_early.c | 6 +- include/linux/kvm_host.h | 9 +- include/uapi/linux/kvm.h | 3 +- virt/kvm/arm/arm.c | 5 + virt/kvm/arm/mmu.c | 40 +- virt/kvm/arm/vgic/vgic-debug.c | 4 +- virt/kvm/arm/vgic/vgic-its.c | 10 +- virt/kvm/arm/vgic/vgic-mmio-v2.c | 47 +- virt/kvm/arm/vgic/vgic.h | 16 + virt/kvm/kvm_main.c | 7 +- 88 files changed, 2041 insertions(+), 916 deletions(-) create mode 100644 arch/powerpc/include/asm/pte-walk.h
---8<---
arch/x86/kvm/mmu.c +0 -0
@@@ -4116,21 -4157,11 +4162,21 @@@ reset_shadow_zero_bits_mask(struct kvm_* Passing "true" to the last argument is okay; it adds a check * on bit 8 of the SPTEs which KVM doesn't use anyway. */ -__reset_rsvds_bits_mask (vcpu, &context->shadow_zero_check, + shadow_zero_check = &context->shadow_zero_check; +__reset_rsvds_bits_mask (vcpu, shadow_zero_check, boot_cpu_data.x86_phys_bits, context->shadow_root_level, uses_nx, -guest_cpuid_has_gbpages (vcpu),is_pse (vcpu), - true); +guest_cpuid_has (vcpu,X86_FEATURE_GBPAGES ), +is_pse (vcpu), true); + + if (!shadow_me_mask) + return; + + for (i = context->shadow_root_level; --i >= 0;) { + shadow_zero_check->rsvd_bits_mask[0 ][i] &= ~shadow_me_mask; + shadow_zero_check->rsvd_bits_mask[1 ][i] &= ~shadow_me_mask; + } + }EXPORT_SYMBOL_GPL (reset_shadow_zero_bits_mask);
Quoted 4 lines · Radim Krčmář
Topic branch merges in s390 and powerpc
are already in mainline -- would you prefer to see the expected result after merge instead of whatgit request-pullproduces?
So generally, if you do the test-merge anyway (which I appreciate), I generally prefer the expected results instead of the raw git request-pull output.
But it's also definitely not a hard requirement.
Basically, the rough guidance is that "git request-pull is sufficient".
And if you are not a git power-user (ie you don't use lots of branches, and there aren't any shared topic branches with other trees), git request-pull will simply always be the right thing anyway.
For maintainers that _are_ doing fancier things with git, and are sharing branches and doing their own complex git history, "git request-pull" is the simple interface - and is generally _too_ simple. So then I _hope_ (but do not require) that such maintainers will do the test-merge anyway for other reasons, and take the diffstat from that instead, since the simple "git request-pull" model won't necessarily give the right diffstat for the more complex history case.
So it's appreciated, but not required.
Linus