[Bug 76808] [IVB] RCS flip hang
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sun Mar 30 23:55:22 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=76808
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
The problem should be greatly reduced by:
commit 05524f5b61c3c15859477a2165cff81e3d682743
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date: Tue Feb 11 19:52:06 2014 +0200
drm/i915: Prevent MI_DISPLAY_FLIP straddling two cachelines on IVB
commit f66fab8e1cd6b3127ba4c5c0d11539fbe1de1e36 upstream.
According to BSpec the entire MI_DISPLAY_FLIP packet must be contained
in a single cacheline. Make sure that happens.
v2: Use intel_ring_begin_cacheline_safe()
v3: Use intel_ring_cacheline_align() (Chris)
Cc: Bjoern C <lkml at call-home.ch>
Cc: Alexandru DAMIAN <alexandru.damian at intel.com>
Cc: Enrico Tagliavini <enrico.tagliavini at gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74053
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: stable at vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
in v3.13.5
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