[Bug 102818] [BSW] image corruption issue after edd849e5448c4f6ddc04a5fa1ac5479176660c27

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102818

--- Comment #22 from freedesktop at nmacleod.com ---
Hi, apologies for the long delay - a bad case of Man Flu has knocked me out for
the past week.

On Sunday I produced three test builds for JP based on drm-tip[1]:

"drm-tip: 2017y-11m-12d-14h-36m-14s UTC integration manifest"

The three builds were:

#1113b: drmtip only
#1113c: #1113b + Chris Wilson patch (comment 17)
#1113d: #1113b + my hack patch (comment 11)

After testing, JP has called all three builds as "GOOD", as none are exhibiting
the Z-shaped corruption. Therefore it doesn't look like any additional patches
from this bug are required.

However a different build (exact same userland but with drm-tip replaced by the
mainline 4.14 kernel released on Sunday, and no patches from this bug)
continues to show the Z-shaped corruption, so the corruption issue is still
present in the mainline 4.14 kernel.

Maybe this issue will be fixed in 4.15?

1.
https://cgit.freedesktop.org/drm-tip/commit/?id=0dc48f1fad834c3ab95f4d178e9e38e6ea39b6cf

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