Commit bfcb08a0 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
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KVM: VMX: Inject #PF on ENCLS as "emulated" #PF 



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: 70210c04 ("KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions")
Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
Reviewed-by: default avatarMaxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20220830231614.3580124-13-seanjc@google.com


Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 593a5c2e

arch/x86/kvm/vmx/sgx.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

	}