[Intel-gfx] Intel 915GM MCHBAR bug

[Jesse Barnes]

On Mon, 01 Jun 2009 22:31:13 +0300
Pekka Enberg <penberg at cs.helsinki.fi> wrote:

> Hi Jesse,
> 
> I am seeing this on my Eee PC 701 which is running a Ubuntu 
> 2.6.28-11.42-generic stock kernel:
> 
> [   76.826966] [drm:i915_gem_detect_bit_6_swizzle] *ERROR* Couldn't
> read from MCHBAR.  Disabling tiling.
> [   76.827215] [drm] Initialized i915 1.6.0 20080730 on minor 0
> [   76.834037] [drm:i915_setparam] *ERROR* unknown parameter 4
> [   76.834104] [drm:i915_getparam] *ERROR* Unknown parameter 6
> 
> Google turned up this patch
> 
> http://lists.freedesktop.org/archives/intel-gfx/2009-January/001186.html
> 
> but I don't seem to find it mainline kernel.
> 
> Was the bug fixed in some other way? It seem that distributions have
> not yet picked up your patch and I am unsure if it's in any of the
> -stable kernels.

I think Eric acked it but may not have pushed it to drm-intel-next
yet.  Should happen in the next week or two though as we prepare the
merge window series.

Jesse