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SubjectRe: Linux support for Intel MMX CPU's
Followup to:  <4vc0sf$>
By author: (Malcolm Beattie)
In newsgroup:
> Linus mentioned that task switching used tricks to be lazy about
> FPU state saving. I can't find the relevant code right now. Maybe
> somebody should check that these MMX instructions don't bypass
> whatever method Linux uses to trigger a forced save of FPU state.

If the kernel uses fsave/frestore it is OK; these instructions have
been explicitly amended to support either flavour of FPU state.


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