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| author | Uros Bizjak <ubizjak@gmail.com> | 2018-09-28 10:33:05 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2018-10-01 13:46:32 +0200 |
| commit | c808c09b527cd60d9a0d53799935f75e2452174d (patch) | |
| tree | 5b635f61d3641c437beb6190eabf515e7b06c6a2 /arch/x86/include/asm/cmpxchg.h | |
| parent | 02101c45ec5b19d607af7372680f5259050b4e9c (diff) | |
| download | linux-0-day-c808c09b527cd60d9a0d53799935f75e2452174d.tar.gz linux-0-day-c808c09b527cd60d9a0d53799935f75e2452174d.tar.xz | |
x86/asm: Use CC_SET()/CC_OUT() in __cmpxchg_double()
Replace open-coded use of the SETcc instruction with CC_SET()/CC_OUT()
in __cmpxchg_double().
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/CAFULd4YdvwwhXWHqqPsGk5+TLG71ozgSscTZNsqmrm+Jzg941w@mail.gmail.com
Diffstat (limited to 'arch/x86/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/x86/include/asm/cmpxchg.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h index a55d79b233d33..bfb85e5844ab8 100644 --- a/arch/x86/include/asm/cmpxchg.h +++ b/arch/x86/include/asm/cmpxchg.h @@ -242,10 +242,12 @@ extern void __add_wrong_size(void) BUILD_BUG_ON(sizeof(*(p2)) != sizeof(long)); \ VM_BUG_ON((unsigned long)(p1) % (2 * sizeof(long))); \ VM_BUG_ON((unsigned long)((p1) + 1) != (unsigned long)(p2)); \ - asm volatile(pfx "cmpxchg%c4b %2; sete %0" \ - : "=a" (__ret), "+d" (__old2), \ - "+m" (*(p1)), "+m" (*(p2)) \ - : "i" (2 * sizeof(long)), "a" (__old1), \ + asm volatile(pfx "cmpxchg%c5b %1" \ + CC_SET(e) \ + : CC_OUT(e) (__ret), \ + "+m" (*(p1)), "+m" (*(p2)), \ + "+a" (__old1), "+d" (__old2) \ + : "i" (2 * sizeof(long)), \ "b" (__new1), "c" (__new2)); \ __ret; \ }) |