Real-mode exceptions do not deliver error code. As can be seen in Intel SDM
volume 2, real-mode exceptions do not have parentheses, which indicate
error-code. To avoid significant changes of the code, the error code is
"removed" during exception queueing.
Signed-off-by: Nadav Amit <na...@cs.technion.ac.il>
---
arch/x86/kvm/x86.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 14c49cf..e885029 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -353,6 +353,8 @@ static void kvm_multiple_exception(struct kvm_vcpu *vcpu,
if (!vcpu->arch.exception.pending) {
queue:
+ if (has_error && !is_protmode(vcpu))
+ has_error = false;
vcpu->arch.exception.pending = true;
vcpu->arch.exception.has_error_code = has_error;
vcpu->arch.exception.nr = nr;
--
1.9.1
--
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