KVM: x86/mmu: Zap only the target TDP MMU shadow page in NX recovery

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When recovering a potential hugepage that was shattered for the iTLB
multihit workaround, precisely zap only the target page instead of
iterating over the TDP MMU to find the SP that was passed in.  This will
allow future simplification of zap_gfn_range() by having it zap only
leaf SPTEs.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220226001546.360188-14-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2022-02-26 00:15:31 +00:00 • committed by Paolo Bonzini

parent 626808d137

commit c10743a182

4 changed files with 39 additions and 24 deletions

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7

arch/x86/kvm/mmu/mmu_internal.h

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2

arch/x86/kvm/mmu/tdp_iter.h

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36

arch/x86/kvm/mmu/tdp_mmu.c

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18

arch/x86/kvm/mmu/tdp_mmu.h

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