On Wed, 3 Oct 2007 22:35:24 +0300
"Pekka Enberg" <[email protected]> wrote:
> Hi Linus,
>
> On 10/3/07, Linus Torvalds <[email protected]> wrote:
> > I would bet that the reason the intel-optimized memcpy triggers this is
> > that the non-temporal stores just means that you go out directly on the
> > bus, and it probably just shows a weakness in the chipset or bus that
> > doesn't show with the normal cacheline accesses.
>
> But that should show up with memtest too, no?
Not neccessarily. The old VIA memory copying bug only showed up with
prefetching and mmx store patterns. That was a hardware flaw that took
extreme memory utilisation to show up - so it does occur but thats not to
say it is the cause
Alan
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