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SubjectRe: Followup to previous post: Atlon/VIA Instabilities
> So it seems that CONFIG_X86_USE_3DNOW is simply used to 
> enable access to the routines in mmx.c (the athlon-optimized
> routines on CONFIG_K7 kernels), so then it appears that somehow
> this is corrupting memory / not behaving as it should (very
> technical, right?) :)...

Do you use any unusual (binary only/with source) kernel modules?

mmx.c stores the current contents on the fpu registers into
current->thread.i387.f{,x}save.
If another module modifes the fpu registers and calls memmove it will
cause fpu corruptions.

I checked that a few months ago, and no module in the main kernel tree
does that.

--
Manfred
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