diff options
| author | Youling Tang <tangyouling@kylinos.cn> | 2026-04-22 15:45:13 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2026-04-22 15:45:13 +0800 |
| commit | 2c749f734ebfe350da55bf40ea55444fb85d4055 (patch) | |
| tree | f24857a685e38da16ec58fb2468528a47d917a1e /arch/loongarch/kernel/inst.c | |
| parent | adf346e500647d91d115e1319f04c3c7972620d9 (diff) | |
LoongArch: Batch the icache maintenance for jump_label
Switch to the batched version of the jump label update functions so
instruction cache maintenance is deferred until the end of the update.
Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/inst.c')
| -rw-r--r-- | arch/loongarch/kernel/inst.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/loongarch/kernel/inst.c b/arch/loongarch/kernel/inst.c index 1a728082944c..0b9228b7c13a 100644 --- a/arch/loongarch/kernel/inst.c +++ b/arch/loongarch/kernel/inst.c @@ -209,6 +209,9 @@ int larch_insn_write(void *addr, u32 insn) int ret; unsigned long flags = 0; + if ((unsigned long)addr & 3) + return -EINVAL; + raw_spin_lock_irqsave(&patch_lock, flags); ret = copy_to_kernel_nofault(addr, &insn, LOONGARCH_INSN_SIZE); raw_spin_unlock_irqrestore(&patch_lock, flags); @@ -221,9 +224,6 @@ int larch_insn_patch_text(void *addr, u32 insn) int ret; u32 *tp = addr; - if ((unsigned long)tp & 3) - return -EINVAL; - ret = larch_insn_write(tp, insn); if (!ret) flush_icache_range((unsigned long)tp, |