Messages in this thread Patch in this message | | | From | Samuel Holland <> | Subject | [PATCH v2 3/7] riscv: kprobes: Use patch_text_nosync() for insn slots | Date | Wed, 27 Mar 2024 09:04:42 -0700 |
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These instructions are not yet visible to the rest of the system, so there is no need to do the whole stop_machine() dance.
Reviewed-by: Björn Töpel <bjorn@rivosinc.com> Signed-off-by: Samuel Holland <samuel.holland@sifive.com> ---
Changes in v2: - Remove unnecessary line wrapping
arch/riscv/kernel/probes/kprobes.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/kprobes.c index 2f08c14a933d..fecbbcf40ac3 100644 --- a/arch/riscv/kernel/probes/kprobes.c +++ b/arch/riscv/kernel/probes/kprobes.c @@ -28,9 +28,8 @@ static void __kprobes arch_prepare_ss_slot(struct kprobe *p) p->ainsn.api.restore = (unsigned long)p->addr + offset; - patch_text(p->ainsn.api.insn, &p->opcode, 1); - patch_text((void *)((unsigned long)(p->ainsn.api.insn) + offset), - &insn, 1); + patch_text_nosync(p->ainsn.api.insn, &p->opcode, 1); + patch_text_nosync(p->ainsn.api.insn + offset, &insn, 1); } static void __kprobes arch_prepare_simulate(struct kprobe *p) -- 2.43.1
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