kvm: testsuite: 64-bit compatibilitykvm-20

1 files changed, 7 insertions, 0 deletions

diff --git a/kvm/user/test/vmexit.c b/kvm/user/test/vmexit.c
index 82078e5e2..11faf6147 100644
--- a/kvm/user/test/vmexit.c
+++ b/kvm/user/test/vmexit.c
@@ -5,7 +5,14 @@ static inline unsigned long long rdtsc()
 {
 	long long r;
 
+#ifdef __x86_64__
+	unsigned a, d;
+
+	asm volatile ("rdtsc" : "=a"(a), "=d"(d));
+	r = a | ((long long)d << 32);
+#else
 	asm volatile ("rdtsc" : "=A"(r));
+#endif
 	return r;
 }