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KVM: VMX: Inject #PF on ENCLS as "emulated" #PF

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Treat #PFs that occur during emulation of ENCLS as, wait for it, emulated
page faults.  Practically speaking, this is a glorified nop as the
exception is never of the nested flavor, and it's extremely unlikely the
guest is relying on the side effect of an implicit INVLPG on the faulting
address.

Fixes: 70210c044b ("KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20220830231614.3580124-13-seanjc@google.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2022-08-30 23:15:59 +00:00
committed by Paolo Bonzini
parent 593a5c2e3c
commit bfcb08a0b9
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/vmx/sgx.c
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@@ -129,7 +129,7 @@ static int sgx_inject_fault(struct kvm_vcpu *vcpu, gva_t gva, int trapnr)
ex.address = gva;
ex.error_code_valid = true;
ex.nested_page_fault = false;
kvm_inject_page_fault(vcpu, &ex);
kvm_inject_emulated_page_fault(vcpu, &ex);
} else {
kvm_inject_gp(vcpu, 0);
}