KVM: SVM: Check for asid != 0 on nested vmrun

This patch lets a nested vmrun fail if the L1 hypervisor left the asid zero. This fixes the asid_zero unit test. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
git-mirror · Oct 24, 2010 · dbe7758 · dbe7758
1 parent 52c65a3
commit dbe7758
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
@@ -2019,6 +2019,9 @@ static bool nested_vmcb_checks(struct vmcb *vmcb)
 	if ((vmcb->control.intercept & (1ULL << INTERCEPT_VMRUN)) == 0)
 		return false;
 
+	if (vmcb->control.asid == 0)
+		return false;
+
 	return true;
 }