Signed-off-by: Avi Kivity <a...@redhat.com>
---
x86/vmexit.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/x86/vmexit.c b/x86/vmexit.c
index 551083d..67746c6 100644
--- a/x86/vmexit.c
+++ b/x86/vmexit.c
@@ -144,7 +144,8 @@ static void do_test(struct test *test)
static void enable_nx(void *junk)
{
- wrmsr(MSR_EFER, rdmsr(MSR_EFER) | EFER_NX_MASK);
+ if (cpuid(0x80000001).d & (1 << 20))
+ wrmsr(MSR_EFER, rdmsr(MSR_EFER) | EFER_NX_MASK);
}
int main(void)
--
1.7.1
--
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