Messages in this thread |  | | From | (H. Peter Anvin) | Subject | Re: Linux support for Intel MMX CPU's | Date | 20 Aug 1996 18:39:15 GMT |
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Followup to: <4vc0sf$ds5@news.ox.ac.uk> By author: mbeattie@sable.ox.ac.uk (Malcolm Beattie) In newsgroup: linux.dev.kernel > > 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.
-hpa
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