| To: | Carsten Langgaard <carstenl@mips.com> |
|---|---|
| Subject: | Re: Promblem with PREF (prefetching) in memcpy |
| From: | Alan Cox <alan@lxorguk.ukuu.org.uk> |
| Date: | 04 Oct 2002 14:09:43 +0100 |
| Cc: | Dominic Sweetman <dom@algor.co.uk>, Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org |
| In-reply-to: | <3D9D8B2E.8258A952@mips.com> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <3D9D484B.4C149BD8@mips.com> <200210041153.MAA12052@mudchute.algor.co.uk> <3D9D855B.12128FA2@mips.com> <1033734968.31839.5.camel@irongate.swansea.linux.org.uk> <3D9D8B2E.8258A952@mips.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
On Fri, 2002-10-04 at 13:35, Carsten Langgaard wrote: > That's exactly the problem. > The actually loads and stores in memcpy is fine, it's the prefetching that > prefetch too much. Then fix your prefetching code 8). We had problems with that on x86 too, prefetching off the last page into ISA space -> death. Was umm fun to debug |
| Previous by Date: | Re: Promblem with PREF (prefetching) in memcpy, Maciej W. Rozycki |
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