Re: [PATCH v3] KVM: x86/mmu: Fix a largely theoretical race in kvm_mmu_track_write()

[Sean Christopherson]

On Tue, 23 Apr 2024 12:31:14 -0700, Sean Christopherson wrote:
> Add full memory barriers in kvm_mmu_track_write() and account_shadowed()
> to plug a (very, very theoretical) race where kvm_mmu_track_write() could
> miss a 0->1 transition of indirect_shadow_pages and fail to zap relevant,
> *stale* SPTEs.
> 
> Without the barriers, because modern x86 CPUs allow (per the SDM):
> 
> [...]

Applied to kvm-x86 mmu.

[1/1] KVM: x86/mmu: Fix a largely theoretical race in kvm_mmu_track_write()
      https://github.com/kvm-x86/linux/commit/226d9b8f1688

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https://github.com/kvm-x86/linux/tree/next