[Bug 61628] [ilk] Corrupted rendering of page previews in Firefox with >xf86-video-intel-2.20.18

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61628

--- Comment #15 from Chris Wilson <chris at chris-wilson.co.uk> ---
I've looked through all callers to see if I can find one that missed the
MOVE_WRITE to no avail. I've double checked the kernel to see if there is a
loop hole, again to no avail. So I'm a little bit lost to see where the missed
synchronisation is coming from, and I haven't yet thought of a good test to
force/catch an error.

In the meantime, I've applied one minor tweak to xf86-video-intel.git,

commit 60ec35b8d25ecfabf1744ea7bc81109d7f2a90e2
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Mar 5 11:14:37 2013 +0000

    sna: Be explicit when checking for an idle bo after CPU synchronisation

Do you mind giving that a quick test?

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