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SubjectRe: [PATCH 0/6] KVM: x86: Apply NX mitigation more precisely
On Sat, Apr 09, 2022, Sean Christopherson wrote:
> This is just the kernel (NX) side of Mingwei's series "Verify dirty
> logging works properly with page stats". Relatively to v3 of Mingwei's
> series[*], this fixes accounting (and tracking in the nonpaging case)
> of disallowed NX huge pages.
>
> I left off the selftests because I disagree with the "Dump stats" change,
> and this has snowballed enough.

Hi Sean,

Ping on this one? This series might need a rebase and I can quickly
provide the review, since several issues are blocked by this. Or if you
are busy, I can help driving it.

Thanks.
-Mingwei

>
> https://lore.kernel.org/all/20220401063636.2414200-1-mizhang@google.com
>
> Mingwei Zhang (1):
> KVM: x86/mmu: explicitly check nx_hugepage in
> disallowed_hugepage_adjust()
>
> Sean Christopherson (5):
> KVM: x86/mmu: Tag disallowed NX huge pages even if they're not tracked
> KVM: x86/mmu: Properly account NX huge page workaround for nonpaging
> MMUs
> KVM: x86/mmu: Set disallowed_nx_huge_page in TDP MMU before setting
> SPTE
> KVM: x86/mmu: Track the number of TDP MMU pages, but not the actual
> pages
> KVM: x86/mmu: Add helper to convert SPTE value to its shadow page
>
> arch/x86/include/asm/kvm_host.h | 17 ++----
> arch/x86/kvm/mmu.h | 9 +++
> arch/x86/kvm/mmu/mmu.c | 104 ++++++++++++++++++++++----------
> arch/x86/kvm/mmu/mmu_internal.h | 33 +++++-----
> arch/x86/kvm/mmu/paging_tmpl.h | 6 +-
> arch/x86/kvm/mmu/spte.c | 11 ++++
> arch/x86/kvm/mmu/spte.h | 17 ++++++
> arch/x86/kvm/mmu/tdp_mmu.c | 49 +++++++++------
> arch/x86/kvm/mmu/tdp_mmu.h | 2 +
> 9 files changed, 167 insertions(+), 81 deletions(-)
>
>
> base-commit: 6521e072010d10380eca3d8a2203990e61e16ae0
> --
> 2.35.1.1178.g4f1659d476-goog
>

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