[PATCH 1/2] drm/i915: Remove the MI_FLUSH_ENABLE setting.

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On 01/20/2012 11:16 AM, Eric Anholt wrote:
> On Thu, 19 Jan 2012 10:59:57 -0800, Ben Widawsky <ben at bwidawsk.net> wrote:
>> On 01/19/2012 10:54 AM, Keith Packard wrote:
>>> On Thu, 19 Jan 2012 10:50:05 -0800, Eric Anholt <eric at anholt.net> wrote:
>>>
>>>> -		if (IS_GEN6(dev) || IS_GEN7(dev))
>>>> -			mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE;
>>>
>>> This seems better than setting random bits that don't do anything but
>>> annoy the simulator.
>>
>> The simulator complains unless both bits are set iirc. I can double
>> check, but it's been a while since I've run without my patch.
> 
> Can you please cite the message you're getting?  I've read a lot of the
> simulator at this point, particularly pieces relating to flushing, and I
> can't find what you're talking about.
> 

It is not email friendly paste.

Gen7GT/Render/src/CsMiCommonCatcher.cpp +293

It links to a power point which shows the workaround is to set both
bits. The powerpoint is kind enough to crash libreoffice for me.

Ben



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