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Re: [linus:master] BUILD REGRESSION a2e5790d841658485d642196dbb092 ...

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Linus Torvalds writes: (Summary) On Thu, Feb 8, 2018 at 1:13 AM, Peter Zijlstra <peterz@infradead.org> wrote:

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that has a WARN in (this very much includes perf annotate): Ugh.
Ugh.
Is there any reason why we don't just use UD2 and avoid this whole issue? Is there any reason why we don't just use UD2 and avoid this whole issue? I see that 'is_valid_bugaddr()' seems to accept either, I'm not seeing anything that cares.
that cares.
Yes, yes, we currently use UD0 for warnings, and UD2 for BUG(), but the fact is, we don't actually seem to care, because the *real*
differentiator is BUGFLAG_WARNING.

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