[Intel-gfx] [PATCH 3/6] drm/i915: Don't emit semaphore wait if wrap happened

[Daniel Vetter]

On Wed, Dec 5, 2012 at 9:44 PM, Paulo Zanoni <przanoni at gmail.com> wrote:
> 2012/12/4 Mika Kuoppala <mika.kuoppala at linux.intel.com>:
>> If wrap just happened we need to prevent emitting waits for
>> pre wrap values. Detect this and emit no-ops instead.
>>
>> v2: Use olr > seqno to detect wrap instead of *seqno == 0
>> as suggested by Chris Wilson.
>
> This commit introduces a bug on Haswell. Now when I'm typing my
> password on GDM the screen keeps doing wrong rendering. It "blinks
> blue". After logging in I don't see more prodrm/i915: Set initial seqno value close to wrap boundaryblems.

Just now I've taken out "drm/i915: Set initial seqno value close to
wrap boundary" since QA complained that it regresses things. Does that
help for you, too?
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch