On Wed, 16 Jul 2003, Dave Jones wrote:
> On Wed, Jul 16, 2003 at 01:31:39PM +0100, Hugh Dickins wrote:
>
> Both this..
> > > prefetchw(pmd+j+(PREFETCH_STRIDE/16));
> and this..
> > > prefetchw(md+(PREFETCH_STRIDE/16));
>
> both use the prefetch that was removed in 2.5 for 'being bogus'.
> It can prefetch past the end iirc, which is fatal on some CPUs.
That prefetchw never made sense to me, nor to DavidM whom I falsely
accused of it; but I had never noticed that someone (aha - you!)
got up the courage to remove it from 2.5. A 2.4.22 patch to Marcelo
would come with greater authority from you than from me, Dave.
Hugh
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