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c8e5a0d0e9
Look for a !leaf=>leaf conversion instead of a PFN change when checking if a SPTE change removed a TDP MMU shadow page. Convert the PFN check into a WARN, as KVM should never change the PFN of a shadow page (except when its being zapped or replaced). From a purely theoretical perspective, it's not illegal to replace a SP with a hugepage pointing at the same PFN. In practice, it's impossible as that would require mapping guest memory overtop a kernel-allocated SP. Either way, the check is odd. Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Ben Gardon <bgardon@google.com> Message-Id: <20220226001546.360188-8-seanjc@google.com> Reviewed-by: Mingwei Zhang <mizhang@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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