KVM: VMX: Advance rip to after an ICEBP instruction
When entering an exception after an ICEBP, the saved instruction
pointer should point to after the instruction.
This fixes the bug here: https://bugs.launchpad.net/qemu/+bug/1119686
Signed-off-by: Huw Davies <huw@codeweavers.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index eb3f2b1..8fb56e4 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4841,6 +4841,9 @@
(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
vcpu->arch.dr6 &= ~15;
vcpu->arch.dr6 |= dr6;
+ if (!(dr6 & ~DR6_RESERVED)) /* icebp */
+ skip_emulated_instruction(vcpu);
+
kvm_queue_exception(vcpu, DB_VECTOR);
return 1;
}