Date: Thu, 24 Mar 2005 21:09:06 +0100
From: Jean Delvare <khali@linux-fr.org>
To: Jesse Barnes <jbarnes@engr.sgi.com>, Dave Jones <davej@redhat.com>,
       Andrew Morton <akpm@osdl.org>, Dave Airlie <airlied@linux.ie>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: drm bugs hopefully fixed but there might still be one..
Message-Id: <20050324210906.727543f6.khali@linux-fr.org>
In-Reply-To: <3LFzj-40t-15@gated-at.bofh.it>
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	<3LFzj-40t-15@gated-at.bofh.it>
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Ho all,

> > Aparently backing out the changes to via's tlb_flush routine fixed
> > it for one VIA user. I've not had a chance to look into it just yet.
> > Worse case we can just drop those changes for 2.6.12

I am that one.

> You mean these changes?
> 
> --- a/drivers/char/agp/via-agp.c        2005-03-24 10:33:45 -08:00
> +++ b/drivers/char/agp/via-agp.c        2005-03-24 10:33:45 -08:00
> @@ -83,8 +83,10 @@
>  
>         pci_read_config_dword(agp_bridge->dev, VIA_GARTCTRL, &temp);
>         temp |= (1<<7);
> +       temp &= ~0x7f;
>         pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
>         temp &= ~(1<<7);
> +       temp &= ~0x7f;
>         pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
>  }

Exactlty. I had to revert this one since 2.6.11-bk3, or starting X kills
the machine. By "kill", I mean the real thing, black screen, dead
network, reset is the only choice. This is a (surprise!) VIA-based
motherboard (Asus A7V133-C) with Radeon 9200-based graphics adapter.
Dave Airlie was asking for a tester with such a configuration. I can
test whatever you want. Just tell me what we are looking for :)

With the patch above reverted, 2.6.12-rc1-mm2 seems to work just fine
for me. glxgears is OK and I just had a game of UT (first of the name).
However, I am not a regular gamer so I'm not sure what to look for.

Thanks,
-- 
Jean Delvare
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