diff options
| author | Takashi Iwai <tiwai@suse.de> | 2016-02-09 23:08:37 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-02-09 23:08:37 +0100 |
| commit | 397da2d0ab0d1398242622d80a74df7245395c63 (patch) | |
| tree | 51e01a67c653c67108f65d063b8b9cbfacf0b1a7 /arch/arm64/include/asm/futex.h | |
| parent | b8cb3750ce94d7610934465263850dcf40736bca (diff) | |
| parent | 4dff5c7b7093b19c19d3a100f8a3ad87cb7cd9e7 (diff) | |
Merge branch 'topic/core-fixes' into for-linus
Diffstat (limited to 'arch/arm64/include/asm/futex.h')
| -rw-r--r-- | arch/arm64/include/asm/futex.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/futex.h b/arch/arm64/include/asm/futex.h index 007a69fc4f40..5f3ab8c1db55 100644 --- a/arch/arm64/include/asm/futex.h +++ b/arch/arm64/include/asm/futex.h @@ -121,6 +121,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, return -EFAULT; asm volatile("// futex_atomic_cmpxchg_inatomic\n" +ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, CONFIG_ARM64_PAN) " prfm pstl1strm, %2\n" "1: ldxr %w1, %2\n" " sub %w3, %w1, %w4\n" @@ -137,6 +138,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, " .align 3\n" " .quad 1b, 4b, 2b, 4b\n" " .popsection\n" +ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, CONFIG_ARM64_PAN) : "+r" (ret), "=&r" (val), "+Q" (*uaddr), "=&r" (tmp) : "r" (oldval), "r" (newval), "Ir" (-EFAULT) : "memory"); |