Messages in this thread |  | | Subject | Re: [PATCH RFC 4/5] x86,fpu: lazily skip FPU restore when still loaded | From | Dave Hansen <> | Date | Mon, 3 Oct 2016 13:49:43 -0700 |
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On 10/03/2016 01:22 PM, Rik van Riel wrote: >> > What are the preempt rules with this thing? This needs to be called >> > in preempt-disabled contexts, right? > Indeed, all the FPU context switching code needs > to be called in preempt-disabled contexts. > > You do not want to get preempted halfway through > saving or restoring floating point registers.
OK, cool, that's what I expected. Could you just add a comment about it to make it clear that it's also the case for this new fpu_lazy_skip_restore() helper?
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