| To: | Arnaud Patard <apatard@mandriva.com> |
|---|---|
| Subject: | Re: xorg-server-1.5.2 doesn't work because of missing sysfs pci resource files |
| From: | Ralf Baechle <ralf@linux-mips.org> |
| Date: | Tue, 9 Dec 2008 18:36:34 +0000 |
| Cc: | linux-mips@linux-mips.org |
| In-reply-to: | <m3k5a9kyc6.fsf@anduin.mandriva.com> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20081205154339.GA14327@adriano.hkcable.com.hk> <20081206102030.GA9410@linux-mips.org> <m3k5a9kyc6.fsf@anduin.mandriva.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.5.18 (2008-05-17) |
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 |
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