From: Matt Sealey <matt@genesi-usa•com>
To: "Michel Dänzer" <michel@tungstengraphics•com>
Cc: ppc-dev <linuxppc-dev@ozlabs•org>
Subject: Re: radeonfb, dedicate memory to something else
Date: Tue, 22 Jul 2008 10:05:06 +0100 [thread overview]
Message-ID: <4885A2C2.4060603@genesi-usa.com> (raw)
In-Reply-To: <1216716723.15900.128.camel@thor.sulgenrain.local>
Michel Dänzer wrote:
> On Tue, 2008-07-22 at 09:31 +0100, Matt Sealey wrote:
>> or other graphics drivers can be told "please only use the first 32MB" and
>> then either manually or automatically, map the rest as ramdisk.
>
> You can limit the amount of video RAM used by X using the VideoRam
> directive in xorg.conf(5).
Ah okay. So now.. how do we do this for framebuffers?
Is it safe to poke around in radeon_identify_vram and maybe supply a kernel
argument videomem=32M and let it check, if it's bigger, then limit it, and
if not, keep the old size in rinfo->video_ram?
Can/could this be moved to all relevant framebuffer drivers?
> GART doesn't have anything to do with this. I suspect he was thinking of
> the PCI BARs not covering all video RAM.
That's certainly not the case here.
--
Matt Sealey <matt@genesi-usa•com>
Genesi, Manager, Developer Relations
next prev parent reply other threads:[~2008-07-22 9:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-20 10:03 radeonfb, dedicate memory to something else Matt Sealey
2008-07-20 15:26 ` Jon Smirl
2008-07-22 8:31 ` Matt Sealey
2008-07-22 8:52 ` Michel Dänzer
2008-07-22 9:05 ` Matt Sealey [this message]
2008-07-22 14:25 ` Jon Smirl
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