diff options
| author | Uros Bizjak <ubizjak@gmail.com> | 2024-11-03 17:09:31 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:01:22 +0100 |
| commit | ebfadf019e85c718cc911bff314a97dba027dcd3 (patch) | |
| tree | 9bbffabf74025f3b4ca0a366cdc662394e308615 | |
| parent | 1dfa6c520022b72de65e64d845cecde8903d9f63 (diff) | |
locking/atomic/x86: Use ALT_OUTPUT_SP() for __alternative_atomic64()
[ Upstream commit 8b64db9733c2e4d30fd068d0b9dcef7b4424b035 ]
CONFIG_X86_CMPXCHG64 variant of x86_32 __alternative_atomic64()
macro uses CALL instruction inside asm statement. Use
ALT_OUTPUT_SP() macro to add required dependence on %esp register.
Fixes: 819165fb34b9 ("x86: Adjust asm constraints in atomic64 wrappers")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20241103160954.3329-1-ubizjak@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/x86/include/asm/atomic64_32.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h index 1f650b4dde50..6c6e9b9f98a4 100644 --- a/arch/x86/include/asm/atomic64_32.h +++ b/arch/x86/include/asm/atomic64_32.h @@ -51,7 +51,8 @@ static __always_inline s64 arch_atomic64_read_nonatomic(const atomic64_t *v) #ifdef CONFIG_X86_CMPXCHG64 #define __alternative_atomic64(f, g, out, in...) \ asm volatile("call %c[func]" \ - : out : [func] "i" (atomic64_##g##_cx8), ## in) + : ALT_OUTPUT_SP(out) \ + : [func] "i" (atomic64_##g##_cx8), ## in) #define ATOMIC64_DECL(sym) ATOMIC64_DECL_ONE(sym##_cx8) #else |