Messages in this thread | | | Date | Wed, 16 Jul 2003 19:57:38 +0100 (BST) | From | Hugh Dickins <> | Subject | Re: Question about free_one_pgd() changes in these 3.5G patches |
| |
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
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |