Author: Gian-Carlo Pascutto
Date: 14:22:12 08/18/03
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On August 18, 2003 at 17:19:51, Sune Fischer wrote: >On August 18, 2003 at 16:51:55, Gerd Isenberg wrote: >> >>These registers (MMX (Athlon/Opteron/P4) and XMM (Opetron/P4) may even used in >>reentrant float arithmetic and should be saved and restored before/after a >>context switch of current and future operating systems. I guess FXSAVE/FXRSTOR >>instructions are for that purpose. >> >>Gerd > >Hmm, I don't really understand what that means. > >Is it possible to set the affinity of each thread, so that no context switching >occurs? That way they wouldn't mess up eachothers registers, would they? Uh, it means 'don't worry about it, the operating system will make things magically work for you'. -- GCP
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