diff options
Diffstat (limited to 'include/asm-i386/tsc.h')
| -rw-r--r-- | include/asm-i386/tsc.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/asm-i386/tsc.h b/include/asm-i386/tsc.h index 3f3c1fa000b..62c091ffccc 100644 --- a/include/asm-i386/tsc.h +++ b/include/asm-i386/tsc.h @@ -35,14 +35,16 @@ static inline cycles_t get_cycles(void) static __always_inline cycles_t get_cycles_sync(void) { unsigned long long ret; - unsigned eax; + unsigned eax, edx; /* * Use RDTSCP if possible; it is guaranteed to be synchronous * and doesn't cause a VMEXIT on Hypervisors */ alternative_io(ASM_NOP3, ".byte 0x0f,0x01,0xf9", X86_FEATURE_RDTSCP, - "=A" (ret), "0" (0ULL) : "ecx", "memory"); + ASM_OUTPUT2("=a" (eax), "=d" (edx)), + "a" (0U), "d" (0U) : "ecx", "memory"); + ret = (((unsigned long long)edx) << 32) | ((unsigned long long)eax); if (ret) return ret; |