From ef1f3413284b9270266cb04a944647e59735f0f1 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Fri, 5 Sep 2008 13:26:39 +0100 Subject: [PATCH] x86: ticket spin locks: fix asm constraints In addition to these changes I doubt the 'volatile' on all the ticket lock asm()-s are really necessary. Signed-off-by: Jan Beulich Signed-off-by: Ingo Molnar --- include/asm-x86/spinlock.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/asm-x86/spinlock.h b/include/asm-x86/spinlock.h index 93adae338ac..acd9bdda55c 100644 --- a/include/asm-x86/spinlock.h +++ b/include/asm-x86/spinlock.h @@ -101,7 +101,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock) "1:" "sete %b1\n\t" "movzbl %b1,%0\n\t" - : "=&a" (tmp), "=Q" (new), "+m" (lock->slock) + : "=&a" (tmp), "=&Q" (new), "+m" (lock->slock) : : "memory", "cc"); @@ -146,7 +146,7 @@ static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock) /* don't need lfence here, because loads are in-order */ "jmp 1b\n" "2:" - : "+Q" (inc), "+m" (lock->slock), "=r" (tmp) + : "+r" (inc), "+m" (lock->slock), "=&r" (tmp) : : "memory", "cc"); } @@ -166,7 +166,7 @@ static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock) "1:" "sete %b1\n\t" "movzbl %b1,%0\n\t" - : "=&a" (tmp), "=r" (new), "+m" (lock->slock) + : "=&a" (tmp), "=&q" (new), "+m" (lock->slock) : : "memory", "cc"); -- 2.41.1