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-rw-r--r--tools/testing/selftests/kvm/x86_64/smm_test.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/smm_test.c b/tools/testing/selftests/kvm/x86_64/smm_test.c
index 36314152943d..ae39a220609f 100644
--- a/tools/testing/selftests/kvm/x86_64/smm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/smm_test.c
@@ -47,10 +47,10 @@ uint8_t smi_handler[] = {
0x0f, 0xaa, /* rsm */
};
-void sync_with_host(uint64_t phase)
+static inline void sync_with_host(uint64_t phase)
{
asm volatile("in $" XSTR(SYNC_PORT)", %%al \n"
- : : "a" (phase));
+ : "+a" (phase));
}
void self_smi(void)