Messages in this thread | | | Date | Thu, 29 Sep 2022 17:50:42 +0100 | From | Catalin Marinas <> | Subject | Re: [PATCH 3/3] arm64/kprobe: Optimize the performance of patching single-step slot |
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On Tue, Sep 27, 2022 at 10:24:35AM +0800, Liao Chang wrote: > Single-step slot would not be used until kprobe is enabled, that means > no race condition occurs on it under SMP, hence it is safe to pacth ss > slot without stopping machine. > > Since I and D caches are coherent within single-step slot from > aarch64_insn_patch_text_nosync(), hence no need to do it again via > flush_icache_range(). > > Acked-by: Will Deacon <will@kernel.org> > Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> > Signed-off-by: Liao Chang <liaochang1@huawei.com> > --- > arch/arm64/kernel/probes/kprobes.c | 27 +++++++++++++++++++++------ > 1 file changed, 21 insertions(+), 6 deletions(-)
What's your expectation with this series, should the arch maintainers just pick the individual patches?
-- Catalin
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