[Bug 98288] linux 4.9-r1: gpu hangs after hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98288

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
The RING_HEAD (loaded from the context) is at the old tail pointer (minus the
WA_TAIL) which was lost over suspend (due to stolen memory being reused). We
wrote the next request after the WA_TAIL leaving 2 dwords of garbage in the
ring.

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20161201/38c036d3/attachment.html>