Bug 16524

Summary: 2.6.35-rc6+: i915: Bisected regression
Product: Drivers Reporter: Maciej Rutecki (maciej.rutecki)
Component: Video(DRI - Intel)Assignee: drivers_video-dri-intel (drivers_video-dri-intel)
Severity: normal CC: gordon.jin, maciej.rutecki, nanhai.zou, rjw, thomas
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.35-rc6 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 7216, 16055    

Description Maciej Rutecki 2010-08-05 17:41:23 UTC
Subject    : 2.6.35-rc6+: i915: Bisected regression
Submitter  : Thomas Meyer <thomas@m3y3r.de>
Date       : 2010-08-01 9:01
Message-ID : 201008011101.01429.thomas@m3y3r.de
References : http://marc.info/?l=linux-kernel&m=128065334826909&w=2

This entry is being used for tracking a regression from 2.6.34. Please don't
close it until the problem is fixed in the mainline.

Caused by:

commit d1b851fc0d105caa6b6e3e7c92d2987dfb52cbe0
Author: Zou Nan hai <nanhai.zou@intel.com>
Date:   Fri May 21 09:08:57 2010 +0800

    drm/i915: implement BSD ring buffer V2
    The BSD (bit stream decoder) ring is used for accessing the BSD engine
    which decodes video bitstream for H.264 and VC1 on G45+.  It is
    asynchronous with the render ring and has access to separate parts of
    the GPU from it, though the render cache is coherent between the two.
    Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
    Signed-off-by: Xiang Hai hao <haihao.xiang@intel.com>
    Signed-off-by: Eric Anholt <eric@anholt.net>

First-Bad-Commit : d1b851fc0d105caa6b6e3e7c92d2987dfb52cbe0
Comment 1 Gordon Jin 2010-08-09 06:56:18 UTC

*** This bug has been marked as a duplicate of bug 16501 ***