openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Jan Kiszka 2015-03-09 20:56:43 +01:00 committed by Marcelo Tosatti
parent b34a80517b
commit ae1f576707
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kvm/vmx.c
View File

@ -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);