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kvm: nVMX: Fix fault priority for VMX operations

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When checking emulated VMX instructions for faults, the #UD for "IF
(not in VMX operation)" should take precedence over the #GP for "ELSIF
CPL > 0."

Suggested-by: Eric Northup <digitaleric@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson 2018-07-27 13:44:45 -07:00 committed by Paolo Bonzini
parent 36090bf43a
commit e49fcb8b9e
1 changed files with 5 additions and 4 deletions
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9
arch/x86/kvm/vmx.c
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@ -8159,15 +8159,16 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
*/
static int nested_vmx_check_permission(struct kvm_vcpu *vcpu)
{
if (!to_vmx(vcpu)->nested.vmxon) {
kvm_queue_exception(vcpu, UD_VECTOR);
return 0;
}
if (vmx_get_cpl(vcpu)) {
kvm_inject_gp(vcpu, 0);
return 0;
}
if (!to_vmx(vcpu)->nested.vmxon) {
kvm_queue_exception(vcpu, UD_VECTOR);
return 0;
}
return 1;
}