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SubjectRe: [GIT pull] x86/urgent for v5.9-rc2
On Sun, Aug 30, 2020 at 11:04 AM Thomas Gleixner <> wrote:
> The historical inconsistent for_each_cpu() behaviour of
> ignoring the cpumask and unconditionally claiming that CPU0 is in the
> mask struck again. Sigh.

I guess we could remove the UP optimizations these days. It's not like
they matter like they used to.

Or leave the optimizations in the sense that they wouldn't do the
crazy bit searching, but they could look at bit 0 of the mask they're


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