KVM: x86/mmu: WARN if TDP MMU SP disallows hugepage after being zapped

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Extend the accounting sanity check in kvm_recover_nx_huge_pages() to the
TDP MMU, i.e. verify that zapping a shadow page unaccounts the disallowed
NX huge page regardless of the MMU type.  Recovery runs while holding
mmu_lock for write and so it should be impossible to get false positives
on the WARN.

Suggested-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221019165618.927057-9-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2022-10-19 16:56:18 +00:00 • committed by Paolo Bonzini

parent 76901e56fb

commit 3a05675722

1 changed files with 3 additions and 4 deletions

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arch/x86/kvm/mmu/mmu.c

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