KVM: VMX: Mark VCPU_EXREG_CR3 dirty when !CR0_PG -> CR0_PG if EPT + !URG
When !CR0_PG -> CR0_PG, vcpu->arch.cr3 becomes active, but GUEST_CR3 is still vmx->ept_identity_map_addr if EPT + !URG. So VCPU_EXREG_CR3 is considered to be dirty and GUEST_CR3 needs to be updated in this case. Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com> Message-Id: <20211216021938.11752-4-jiangshanlai@gmail.com> Fixes: c62c7bd4 ("KVM: VMX: Update vmcs.GUEST_CR3 only when the guest CR3 is dirty") Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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