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| author | Heiko Carstens <hca@linux.ibm.com> | 2022-05-11 14:05:25 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2022-05-17 15:16:28 +0200 |
| commit | fad442d3abde47aef97d0d822807ab6e2555784a (patch) | |
| tree | 1a15fda279e1cad21a742e494437b06ddc93714b /arch/s390/include/asm/spinlock.h | |
| parent | s390/cpumf: add new extended counter set for IBM z16 (diff) | |
| download | linux-fad442d3abde47aef97d0d822807ab6e2555784a.tar.xz linux-fad442d3abde47aef97d0d822807ab6e2555784a.zip | |
s390/alternatives: provide identical sized orginal/alternative sequences
Explicitly provide identical sized original/alternative instruction
sequences. This way there is no need for the s390 specific alternatives
infrastructure to generate padding sequences.
The code which generates such sequences will be removed with a follow on
patch.
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20220511120532.2228616-2-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/spinlock.h')
| -rw-r--r-- | arch/s390/include/asm/spinlock.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h index 10a460762e94..37127cd7749e 100644 --- a/arch/s390/include/asm/spinlock.h +++ b/arch/s390/include/asm/spinlock.h @@ -79,7 +79,7 @@ static inline void arch_spin_unlock(arch_spinlock_t *lp) typecheck(int, lp->lock); kcsan_release(); asm_inline volatile( - ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ + ALTERNATIVE("nop", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */ " sth %1,%0\n" : "=R" (((unsigned short *) &lp->lock)[1]) : "d" (0) : "cc", "memory"); |