[2.4.20] e1000 as module gives unresolved symbol _mmx_memcpy [rescued]
Quoted 2 lines
a) a kernel build for a VIA C3 doesn't use MMX, userspace programs can still use it
Basically true. It might be instructive to do more benching on this with the C3 and MMX especially if the new cores add full prefetch stuff
Quoted 1 line
b) Both kernel and userspace can't use MMX any more
MMX is designed to need no OS support. SSE/SSE2 do need OS helpers but not MMX.
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