lkml.org 
[lkml]   [2012]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH V3 11/16] drm/radeon: Make radeon card usable for Loongson.
From
On Fri, Jun 22, 2012 at 7:11 PM, Ralf Baechle <ralf@linux-mips.org> wrote:
> On Fri, Jun 22, 2012 at 06:55:40PM +0800, Huacai Chen wrote:
>
>> > btw, would it be a good idea to use uncached accelerated instead ?
>> I have tried uncached accelerated, there will be random points in the
>> monitor, it seems a hw issue...
>
> Have you flushed the pages from memory before switching their cache mode
> to uncached accelerated?  The MIPS architecture defines the result of
> mixing cache modes as UNPREDICTABLE so be careful to flush caches before
> switching cache mode of a page.
Not because of flushing, CPU designing team told us a method but very
complex, and that method will cause other performance drop. So, we
won't use uncached accelerate mode.
>
>  Ralf
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-06-23 03:21    [W:0.045 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site