From: Ralf Baechle <ralf@linux-mips.org>
To: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: moreau francis <francis_moreau2000@yahoo.fr>, linux-mips@linux-mips.org
Subject: Re: dcache issue...
Date: Thu, 20 Jan 2005 15:34:14 +0100 [thread overview]
Message-ID: <20050120143414.GB3684@linux-mips.org> (raw)
In-Reply-To: <Pine.LNX.4.61L.0501201414250.18294@blysk.ds.pg.gda.pl>
On Thu, Jan 20, 2005 at 02:18:00PM +0000, Maciej W. Rozycki wrote:
> > > Live is tough, use caches ;-)
> >
> > oh yes it is. But I would only understand what was
> > my problem using the mixed cache modes...
>
> Note that ll/sc sequences don't work as expected on uncached memory, so
> atomic accesses are not going to work in the kernel memory in your
> configuration. This may cause arbitrary corruptions due to an
> inconsistent state of the kernel.
Uniprocessor systems are usually get away with it but it's not something
real software should rely on.
Ralf
next prev parent reply other threads:[~2005-01-20 14:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-20 11:15 dcache issue moreau francis
2005-01-20 13:49 ` Ralf Baechle
2005-01-20 14:00 ` moreau francis
2005-01-20 14:18 ` Maciej W. Rozycki
2005-01-20 14:34 ` Ralf Baechle [this message]
2005-01-20 15:11 ` moreau francis
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