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linux/arch/x86/kvm
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Tao Su db574f2f96 KVM: x86/mmu: Don't save mmu_invalidate_seq after checking private attr 
Drop the second snapshot of mmu_invalidate_seq in kvm_faultin_pfn().
Before checking the mismatch of private vs. shared, mmu_invalidate_seq is
saved to fault->mmu_seq, which can be used to detect an invalidation
related to the gfn occurred, i.e. KVM will not install a mapping in page
table if fault->mmu_seq != mmu_invalidate_seq.

Currently there is a second snapshot of mmu_invalidate_seq, which may not
be same as the first snapshot in kvm_faultin_pfn(), i.e. the gfn attribute
may be changed between the two snapshots, but the gfn may be mapped in
page table without hindrance. Therefore, drop the second snapshot as it
has no obvious benefits.

Fixes: f6adeae81f ("KVM: x86/mmu: Handle no-slot faults at the beginning of kvm_faultin_pfn()")
Signed-off-by: Tao Su <tao1.su@linux.intel.com>
Message-ID: <20240528102234.2162763-1-tao1.su@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-06-05 06:45:06 -04:00
..
mmu KVM: x86/mmu: Don't save mmu_invalidate_seq after checking private attr 2024-06-05 06:45:06 -04:00
svm KVM: SEV-ES: Delegate LBR virtualization to the processor 2024-06-03 13:07:18 -04:00
vmx Merge branch 'kvm-fixes-6.10-1' into HEAD 2024-06-03 13:18:08 -04:00
.gitignore KVM: x86: use a separate asm-offsets.c file 2022-11-09 12:10:17 -05:00
cpuid.c KVM x86 misc changes for 6.10: 2024-05-12 03:18:44 -04:00
cpuid.h KVM: x86: Snapshot if a vCPU's vendor model is AMD vs. Intel compatible 2024-04-11 12:58:56 -04:00
debugfs.c KVM: Get rid of return value from kvm_arch_create_vm_debugfs() 2024-02-23 21:44:58 +00:00
emulate.c KVM x86 PMU changes for 6.9: 2024-03-11 10:41:09 -04:00
fpu.h
governed_features.h KVM: x86: Use KVM-governed feature framework to track "LAM enabled" 2023-11-28 17:54:09 -08:00
hyperv.c KVM: x86: Give a hint when Win2016 might fail to boot due to XSAVES erratum 2024-01-31 16:21:00 -05:00
hyperv.h KVM: x86: Give a hint when Win2016 might fail to boot due to XSAVES erratum 2024-01-31 16:21:00 -05:00
i8254.c KVM: x86: Unify pr_fmt to use module name for all KVM modules 2022-12-29 15:47:35 -05:00
i8254.h KVM: x86: PIT: Preserve state of speaker port data bit 2022-06-08 13:06:20 -04:00
i8259.c KVM: x86: Fix poll command 2023-06-01 13:44:13 -07:00
ioapic.c KVM: x86/ioapic: Resample the pending state of an IRQ when unmasking 2023-03-27 10:13:28 -04:00
ioapic.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
irq.c KVM: x86/xen: Remove unneeded xen context from kvm_arch when !CONFIG_KVM_XEN 2023-12-07 09:33:42 -08:00
irq.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
irq_comm.c KVM: x86: Make Hyper-V emulation optional 2023-12-07 09:34:57 -08:00
Kconfig KVM: x86: Force KVM_WERROR if the global WERROR is enabled 2024-05-23 12:33:31 -04:00
kvm-asm-offsets.c KVM: SVM: move MSR_IA32_SPEC_CTRL save/restore to assembly 2022-11-09 12:25:53 -05:00
kvm_cache_regs.h KVM: x86: Add helpers to query individual CR0/CR4 bits 2023-03-22 10:10:53 -07:00
kvm_emulate.h KVM: x86: Move nEPT exit_qualification field from kvm_vcpu_arch to x86_exception 2024-04-09 10:24:36 -07:00
kvm_onhyperv.c KVM: x86/mmu: Move filling of Hyper-V's TLB range struct into Hyper-V code 2023-04-10 15:17:29 -07:00
kvm_onhyperv.h KVM: x86: Move Hyper-V partition assist page out of Hyper-V emulation context 2023-12-07 09:34:01 -08:00
lapic.c KVM: x86: Drop support for hand tuning APIC timer advancement from userspace 2024-06-03 13:08:05 -04:00
lapic.h KVM: x86: Drop support for hand tuning APIC timer advancement from userspace 2024-06-03 13:08:05 -04:00
Makefile Merge tag 'loongarch-kvm-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD 2024-05-10 13:20:18 -04:00
mmu.h KVM x86 misc changes for 6.10: 2024-05-12 03:18:44 -04:00
mtrr.c KVM: x86/mmu: Zap SPTEs on MTRR update iff guest MTRRs are honored 2023-10-09 14:35:14 -07:00
pmu.c KVM: x86/pmu: Set enable bits for GP counters in PERF_GLOBAL_CTRL at "RESET" 2024-04-08 13:20:27 -07:00
pmu.h KVM: x86/pmu: Snapshot event selectors that KVM emulates in software 2024-02-01 09:35:48 -08:00
reverse_cpuid.h x86 mitigations for the native BHI hardware vulnerabilty: 2024-04-08 20:07:51 -07:00
smm.c KVM: x86: Open code all direct reads to guest DR6 and DR7 2024-02-22 16:14:47 -08:00
smm.h KVM: x86: smm: preserve interrupt shadow in SMRAM 2022-11-09 12:31:26 -05:00
trace.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
tss.h
x86.c KVM: x86: Drop support for hand tuning APIC timer advancement from userspace 2024-06-03 13:08:05 -04:00
x86.h KVM: x86: Add supported_vm_types to kvm_caps 2024-04-11 13:08:24 -04:00
xen.c KVM: x86/xen: fix recursive deadlock in timer injection 2024-03-04 16:22:39 -08:00
xen.h KVM: x86/xen: inject vCPU upcall vector when local APIC is enabled 2024-03-04 16:22:36 -08:00