From 84ac96587b2a7a27d2aba250009c45dffb8ab4b6 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 26 Nov 2024 14:28:26 +0100 Subject: [PATCH] s390/spinlock: Use R constraint for arch_load_niai4() The load instruction used within arch_load_niai4() has a short displacement and index register. Therefore use the R constraint to reflect this. The used Q constraint does consider an index register. Signed-off-by: Heiko Carstens --- arch/s390/lib/spinlock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c index 255c0a8202e7..c27c0f2a8018 100644 --- a/arch/s390/lib/spinlock.c +++ b/arch/s390/lib/spinlock.c @@ -77,7 +77,7 @@ static inline int arch_load_niai4(int *lock) asm_inline volatile( ALTERNATIVE("nop", ".insn rre,0xb2fa0000,4,0", ALT_FACILITY(49)) /* NIAI 4 */ " l %[owner],%[lock]\n" - : [owner] "=d" (owner) : [lock] "Q" (*lock) : "memory"); + : [owner] "=d" (owner) : [lock] "R" (*lock) : "memory"); return owner; } -- 2.20.1