| To: | Peter Horton <pdh@colonel-panic.org> |
|---|---|
| Subject: | Re: missing flush_dcache_page call in 2.4 kernel |
| From: | "Maciej W. Rozycki" <macro@ds2.pg.gda.pl> |
| Date: | Fri, 26 Mar 2004 20:27:51 +0100 (CET) |
| Cc: | Atsushi Nemoto <anemo@mba.ocn.ne.jp>, phorton@bitbox.co.uk, linux-mips@linux-mips.org |
| In-reply-to: | <20040326184317.GA3661@skeleton-jack> |
| Organization: | Technical University of Gdansk |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20040325.224229.112629304.nemoto@toshiba-tops.co.jp> <20040325143319.GA873@linux-mips.org> <4062F1A1.9070005@bitbox.co.uk> <20040326.122258.41628012.nemoto@toshiba-tops.co.jp> <20040326184317.GA3661@skeleton-jack> |
| Sender: | linux-mips-bounce@linux-mips.org |
On Fri, 26 Mar 2004, Peter Horton wrote: > > I'm quite sure that it's a kernel bug and may cause problems if any > > PIO block device (PIO ide, ide-cs, mtdblock, etc.) are used on CPUs > > which have d-cache aliases (not only MIPS). We need a correct fix ... > > True. A proper fix would flush the relevant page after PIO transfers > into the page cache / swap pages. Unfortunately this would require a > hook in the generic kernel. Why is it unfortunate? A bug in generic code deserves a fix just like any other. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available + |
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