Messages in this thread | | | From | Max Filippov <> | Date | Wed, 6 Apr 2022 20:35:12 -0700 | Subject | Re: [PATCH V3] xtensa: patch_text: Fixup last cpu should be master |
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On Wed, Apr 6, 2022 at 7:28 AM <guoren@kernel.org> wrote: > > From: Guo Ren <guoren@linux.alibaba.com> > > These patch_text implementations are using stop_machine_cpuslocked > infrastructure with atomic cpu_count. The original idea: When the > master CPU patch_text, the others should wait for it. But current > implementation is using the first CPU as master, which couldn't > guarantee the remaining CPUs are waiting. This patch changes the > last CPU as the master to solve the potential risk. > > Signed-off-by: Guo Ren <guoren@linux.alibaba.com> > Signed-off-by: Guo Ren <guoren@kernel.org> > Reviewed-by: Max Filippov <jcmvbkbc@gmail.com> > Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> > Cc: <stable@vger.kernel.org> > --- > arch/xtensa/kernel/jump_label.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-)
Thanks. Applied to my xtensa tree.
-- Max
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