locking/atomic/x86: Use ALT_OUTPUT_SP() for __arch_{,try_}cmpxchg64_emu()

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x86_32 __arch_{,try_}cmpxchg64_emu()() macros use CALL instruction
inside asm statement. Use ALT_OUTPUT_SP() macro to add required
dependence on %esp register.

Fixes: 79e1dd05d1 ("x86: Provide an alternative() based cmpxchg64()")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20241103160954.3329-2-ubizjak@gmail.com

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Uros Bizjak 2024-11-03 17:09:32 +01:00 • committed by Peter Zijlstra

parent 8b64db9733

commit 25cf4fbb59

1 changed files with 3 additions and 3 deletions

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arch/x86/include/asm/cmpxchg_32.h

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