From: Ralf Baechle <ralf@linux-mips.org>
To: Arnaud Patard <apatard@mandriva.com>
Cc: linux-mips@linux-mips.org
Subject: Re: xorg-server-1.5.2 doesn't work because of missing sysfs pci resource files
Date: Tue, 9 Dec 2008 18:36:34 +0000 [thread overview]
Message-ID: <20081209183634.GA2418@linux-mips.org> (raw)
In-Reply-To: <m3k5a9kyc6.fsf@anduin.mandriva.com>
On Tue, Dec 09, 2008 at 07:17:13PM +0100, Arnaud Patard wrote:
> What about things like _CACHE_UNCACHED_ACCELERATED ? Is there a way to
> use this flag ?
That's possible but will require some additional care in the code.
Multiple mappings using different cache modes need to be avoided and
also not all processors support _CACHE_UNCACHED_ACCELERATED.
If you know your software is playing nice and your CPU supports
_CACHE_UNCACHED_ACCELERATED, you can hack the mmap function to use
_CACHE_UNCACHED_ACCELERATED if write_combine is set. Just for now
and for something which I'm planning to push for 2.6.28 I don't want
anything that's more than trivial.
Ralf
next prev parent reply other threads:[~2008-12-09 18:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-05 15:43 xorg-server-1.5.2 doesn't work because of missing sysfs pci resource files Zhang Le
2008-12-05 17:59 ` Arnaud Patard
2008-12-05 18:08 ` Ralf Baechle
2008-12-06 10:20 ` Ralf Baechle
2008-12-06 16:47 ` Zhang Le
2008-12-09 17:22 ` Zhang Le
2008-12-09 17:39 ` Zhang Le
2008-12-09 17:57 ` Ralf Baechle
2008-12-09 18:17 ` Arnaud Patard
2008-12-09 18:36 ` Ralf Baechle [this message]
2008-12-09 19:01 ` Arnaud Patard
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