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Re: Promblem with PREF (prefetching) in memcpy

To: Carsten Langgaard <>
Subject: Re: Promblem with PREF (prefetching) in memcpy
From: Alan Cox <>
Date: 04 Oct 2002 14:09:43 +0100
Cc: Dominic Sweetman <>, Ralf Baechle <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <> <>
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

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