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-rw-r--r--payloads/libpayload/include/x86/arch/rdtsc.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/payloads/libpayload/include/x86/arch/rdtsc.h b/payloads/libpayload/include/x86/arch/rdtsc.h
index 41ab24a9c7..2c92a9f4d4 100644
--- a/payloads/libpayload/include/x86/arch/rdtsc.h
+++ b/payloads/libpayload/include/x86/arch/rdtsc.h
@@ -33,9 +33,9 @@
static u64 rdtsc(void)
{
- u64 val;
- __asm__ __volatile__ ("rdtsc" : "=A" (val));
- return val;
+ u32 lo, hi;
+ __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+ return (u64)hi << 32 | lo;
}
#endif