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?
