[Intel-gfx] [PATCH] drm/i915: SNB BLT workaround

[Zou, Nanhai]

>>-----Original Message-----
>>From: Chris Wilson [mailto:chris at chris-wilson.co.uk]
>>Sent: 2010年11月2日 17:05
>>To: Zou, Nanhai; intel-gfx at lists.freedesktop.org
>>Cc: Zou, Nanhai
>>Subject: Re: [PATCH] drm/i915: SNB BLT workaround
>>
>>On Tue,  2 Nov 2010 16:31:01 +0800, Zou Nan hai <nanhai.zou at intel.com> wrote:
>>> 	on some stepping of SNB cpu, the first command to be parsed in BLT
>>> 	command streamer should be MI_BATCHBUFFER_START
>>> 	otherwise the GPU may hang.
>>
>>Then just add the workaround to the init routine.
>>-Chris
>>

The first command here means each BLT command streamer 
begin the parse action, when the ring tail is moving ahead.

Thanks
Zou Nan hai
>>--
>>Chris Wilson, Intel Open Source Technology Centre