Messages in this thread | | | From | Will Deacon <> | Subject | Re: [PATCH V4 0/4] arch: patch_text: Fixup last cpu should be master | Date | Fri, 8 Apr 2022 14:58:45 +0100 |
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On Thu, 7 Apr 2022 15:33:19 +0800, 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. > > [...]
Applied first patch only to arm64 (for-next/fixes), thanks!
[1/4] arm64: patch_text: Fixup last cpu should be master https://git.kernel.org/arm64/c/31a099dbd91e
Cheers, -- Will
https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev
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