github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 07:03:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

s390/spinlock: Use R constraint for arch_load_niai4()

Browse Source 
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 <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-11-26 14:28:26 +01:00
parent 1200f216a3
commit 84ac96587b
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/s390/lib/spinlock.c
View File

@ -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;
}