On Fri, Apr 12, 2013 at 12:31:53AM -0700, Jonathan Nieder wrote:

Hi Greg,

Please consider

9a0f938bde74 drm/i915: Use the correct size of the GTT for placing the per-process entries, 2012-08-24

for application to the 3.4.y tree.

Thanks, I'll queue this for 3.5 kernel as well.

Cheers, -- Luis

Without this patch, Geoff Crompton's iMac hits a BUG during bootup. The problem is reproducible on

• Debian's 3.2.y-based kernel with drm backported from 3.4.37
• a Debian kernel close to 3.4.4
• a Debian kernel close to 3.5.5
• vanilla 3.4.4

He is not able to reproduce the problem on

• Debian's older 3.2.y-based kernels without the 3.4.y drm backport
• a Debian kernel close to 3.6.4; various newer kernels
• vanilla 3.4.4 + this patch

The patch was applied upstream during the 3.6-rc4 cycle, so newer kernels don't need it.

http://bugs.debian.org/703468 has details, including a screenshot of the boot failure ("unable to handling kernel paging request at ffffc9000b7ff000" in i915_gem_init_ppgtt).

Thoughts welcome, as always.

Regards, Jonathan -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html