Messages in this thread | | | From | Linus Torvalds <> | Date | Sat, 25 Aug 2012 11:34:05 -0700 | Subject | Re: [PATCH 0/6] x86, fpu: cleanups, introduce non-lazy FPU restore for xsave |
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On Fri, Aug 24, 2012 at 2:33 PM, H. Peter Anvin <hpa@zytor.com> wrote: > I have applied this to tip:x86/fpu, but I have also asked Suresh to > prepare a followon patch to decouple eager save from the existence of > the XSAVE instruction. It seems pretty clear that eager save is a net > benefit in the presence of the XSAVEOPT, but it isn't as clear for only > having XSAVE, as far as I can tell. Either way it would seem to be a > policy decision that is somewhat separate from the exact instruction.
Agreed. It would also be good for testing bugs and/or performance for both xsave and non-xsave cases.
Linus
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