Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

locking/pvqspinlock/x86: Use _Q_LOCKED_VAL in PV_UNLOCK_ASM macro

Use _Q_LOCKED_VAL instead of hardcoded $0x1 in PV_UNLOCK_ASM macro.

No functional changes intended.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20240422151752.53997-1-ubizjak@gmail.com

authored by

Uros Bizjak and committed by
Ingo Molnar
532453e7 94af3a04

+1 -1
+1 -1
arch/x86/include/asm/qspinlock_paravirt.h
··· 40 40 #define PV_UNLOCK_ASM \ 41 41 FRAME_BEGIN \ 42 42 "push %rdx\n\t" \ 43 - "mov $0x1,%eax\n\t" \ 43 + "mov $" __stringify(_Q_LOCKED_VAL) ",%eax\n\t" \ 44 44 "xor %edx,%edx\n\t" \ 45 45 LOCK_PREFIX "cmpxchg %dl,(%rdi)\n\t" \ 46 46 "jne .slowpath\n\t" \