[Oneirc SRU] SAUCE: Bug#891270 drm/i915: add multi-threaded forcewake support

Seth Forshee seth.forshee at canonical.com
Tue Nov 22 14:34:38 UTC 2011


On Mon, Nov 21, 2011 at 12:17:24PM -0600, manoj.iyer at canonical.com wrote:
> From: Manoj Iyer <manoj.iyer at canonical.com>
> 
> Please consider the following sauce patch to Oneiric. 
> 
> SRU JUSTIFICATION
> ================
> 
> ISSUE
> =====
> Ivybridge system fails to resume from S3/S4 with recent BIOS. On system resume causes kernel oops in i915 driver.
> 
> FIX
> ===
> Upstream fixed the issue by adding multi-threaded forcewake support.
> On IVB C0+ with newer BIOSes, the forcewake handshake has changed. There's
> now a bitfield for different driver components to keep the GT powered
> on. On Linux, we centralize forcewake handling in one place, so we
> still just need a single bit, but we need to use the new registers if MT
> forcewake is enabled.
> 
> TEST
> =====
> This patch was tested on Ivybridge system with the kernel posted at http://kernel.ubuntu.com/~sarvatt/fdo42923/ and the test results are noted in comment #3 in this bug, and also reported the same to https://bugs.freedesktop.org/show_bug.cgi?id=42923
> 
> The following changes since commit f0bba7483b90dabcf025dc923e0722f5ff9b5e6d:
> 
>   UBUNTU: SAUCE: drm/i915: add multi-threaded forcewake support (2011-11-21 11:37:20 -0600)
> 
> are available in the git repository at:
>   git://kernel.ubuntu.com/manjo/ubuntu-oneiric.git lp891270
> 
> Manoj Iyer (1):
>   UBUNTU: SAUCE: drm/i915: add multi-threaded forcewake support

It seems you still have the attribution problem that Tim pointed out
earlier, as this is showing you as the patch author. I also notice that
the patch from the mailing list has a description of what the patch is
doing and sign-offs, which I think we should be including.




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