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authorJan Kiszka <jan.kiszka@siemens.com>2015-03-09 20:56:43 +0100
committerMarcelo Tosatti <mtosatti@redhat.com>2015-03-13 13:44:43 -0300
commitae1f57670703656cc9f293722c3b8b6782f8ab3f (patch)
treefd4fdfaed468f32cc417fb2b67318dbf7310a23a
parentb34a80517bfcd917bc59d9670d8f465a564af3b9 (diff)
downloadop-kernel-dev-ae1f57670703656cc9f293722c3b8b6782f8ab3f.zip
op-kernel-dev-ae1f57670703656cc9f293722c3b8b6782f8ab3f.tar.gz
KVM: nVMX: Do not emulate #UD while in guest mode
While in L2, leave all #UD to L2 and do not try to emulate it. If L1 is interested in doing this, it reports its interest via the exception bitmap, and we never get into handle_exception of L0 anyway. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
-rw-r--r--arch/x86/kvm/vmx.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fbd9499..50c675b 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5065,6 +5065,10 @@ static int handle_exception(struct kvm_vcpu *vcpu)
}
if (is_invalid_opcode(intr_info)) {
+ if (is_guest_mode(vcpu)) {
+ kvm_queue_exception(vcpu, UD_VECTOR);
+ return 1;
+ }
er = emulate_instruction(vcpu, EMULTYPE_TRAP_UD);
if (er != EMULATE_DONE)
kvm_queue_exception(vcpu, UD_VECTOR);
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