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SubjectRe: [PATCH 1/8] x86, fpu: unlazy_fpu: don't reset thread.fpu_counter
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On 02/16/2015 12:04 PM, Borislav Petkov wrote:

> ... and so by looking at the unlazy_fpu() call sites, I think this
> makes sense.
>
> So how's that for a commit message instead:
>
> --- x86, fpu, unlazy_fpu: Don't reset thread.fpu_counter
>
> The "else" branch clears ->fpu_counter as a remnant of the lazy
> FPU usage counting:
>
> e07e23e1fd30 ("[PATCH] non lazy "sleazy" fpu implementation")
>
> However, switch_fpu_prepare() does this now so that else branch is
> superfluous.
>
> If we do use_eager_fpu(), then this has no effect. Otherwise, if
> we actually wanted to prevent fpu preload after the context switch
> we would need to reset it unconditionally, even if
> __thread_has_fpu(). ---
>
> ?

Good detective work.

Your changelog makes sense to me.

- --
All rights reversed
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