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SubjectRe: [PATCH 0/9] KVM: x86: TDP level cleanups and shadow NPT fix
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On 16/07/20 05:41, Sean Christopherson wrote:
> The primary purpose of this series is to implement a suggestion from Paolo
> to have the MMU make the decision between 4 and 5 level EPT/TDP (when
> 5-level page tables are supported). Having the MMU "own" the decision of
> whether or not to use 5-level paging leads to a variety of nice cleanups,
> and ultimately gets rid of another kvm_x86_ops.
>
> Patch 1 is a fix for SVM's shadow NPT that is compile tested only. I
> don't know enough about the shadow NPT details to know if it's a "real"
> bug or just a supericial oddity that can't actually cause problems.
>
> "Remove temporary WARN on expected vs. actual EPTP level mismatch" could
> easily be squashed with "Pull the PGD's level from the MMU instead of
> recalculating it", I threw it in as a separate patch to provide a
> bisection helper in case things go sideways.
>
> Sean Christopherson (9):
> KVM: nSVM: Correctly set the shadow NPT root level in its MMU role
> KVM: x86/mmu: Add separate helper for shadow NPT root page role calc
> KVM: VMX: Drop a duplicate declaration of construct_eptp()
> KVM: VMX: Make vmx_load_mmu_pgd() static
> KVM: x86: Pull the PGD's level from the MMU instead of recalculating
> it
> KVM: VXM: Remove temporary WARN on expected vs. actual EPTP level
> mismatch
> KVM: x86: Dynamically calculate TDP level from max level and
> MAXPHYADDR
> KVM: x86/mmu: Rename max_page_level to max_huge_page_level
> KVM: x86: Specify max TDP level via kvm_configure_mmu()
>
> arch/x86/include/asm/kvm_host.h | 9 ++---
> arch/x86/kvm/cpuid.c | 2 --
> arch/x86/kvm/mmu.h | 10 ++++--
> arch/x86/kvm/mmu/mmu.c | 63 +++++++++++++++++++++++++--------
> arch/x86/kvm/svm/nested.c | 1 -
> arch/x86/kvm/svm/svm.c | 8 ++---
> arch/x86/kvm/vmx/nested.c | 2 +-
> arch/x86/kvm/vmx/vmx.c | 31 +++++++---------
> arch/x86/kvm/vmx/vmx.h | 6 ++--
> arch/x86/kvm/x86.c | 1 -
> 10 files changed, 81 insertions(+), 52 deletions(-)
>

Queued, thanks.

Paolo

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