Re: [PATCH] agp/intel: Fix dma mask for Sandybridge

From: Takashi Iwai
Date: Mon Aug 23 2010 - 01:29:50 EST


At Mon, 23 Aug 2010 09:35:07 +0800,
Zhenyu Wang wrote:
>
> On 2010.08.20 17:36:08 +0200, Takashi Iwai wrote:
> > Sandybridge requires 36bit dma mask, but the current code checks only
> > against i965, thus it gives Oops with i915 probing on 32bit machine:
> >
> > nommu_map_sg: overflow 14a000000+4096 of device mask ffffffff
> > [drm:drm_agp_bind_pages] *ERROR* Failed to bind AGP memory: -12
> > BUG: unable to handle kernel paging request at fffffff8
> > IP: [<f7fac57f>] i915_gem_evict_something+0xef/0x230 [i915]
> > ...
>
> Sandybridge can do 40-bit dma mask. This has been fixed upstream now.

Could you point where is the upstream GIT tree and the corresponding
commit id?


thanks,

Takashi
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