[Bug 93862] [Bisected] "drm/amdgpu: fix amdgpu_bo_pin_restricted VRAM placing v2" is bad

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93862

            Bug ID: 93862
           Summary: [Bisected] "drm/amdgpu: fix amdgpu_bo_pin_restricted
                    VRAM placing v2" is bad
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: ernstp at gmail.com

Updating to the latest drm-next-4.6-wip I could no longer log in to Gnome
through GDM, I just got a black screen after entering my passwd. startx +
gnome-session worked though.

However if I ran Unigine Heaven with Tessellation there, I saw I got the frames
in the wrong order sometimes. This doesn't happen otherwise.

Bisecting was easy and pointed to:
78d0e182b6c1f5336f6e8cbb197f403276dabc7f
drm/amdgpu: fix amdgpu_bo_pin_restricted VRAM placing v2

Reverting that commit on top of drm-next-4.6-wip also solved the problem.

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