KVM: X86: Propagate fetch faults

KVM currently ignores fetch faults in the instruction
emulator. With nested-npt we could have such faults. This
patch adds the code to handle these.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 2b08b78b6cab..aead72e141b4 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1198,6 +1198,9 @@ static int emulate_popf(struct x86_emulate_ctxt *ctxt,
         *(unsigned long *)dest =
                 (ctxt->eflags & ~change_mask) | (val & change_mask);
 
+        if (rc == X86EMUL_PROPAGATE_FAULT)
+                emulate_pf(ctxt);
+
         return rc;
 }