Comment # 5 on bug 109049 from Chris Wilson

Regression from

commit 08d1bdd4cc57e89d037205687a61d2b6ff9dddd4
Author: Rex Zhu <Rex.Zhu@amd.com>
Date:   Wed Oct 24 16:10:33 2018 +0800

    drm/amdgpu: Limit vm max ctx number to 4096

    driver need to reserve resource for each ctx for
    some hw features. so add this limitation.

    Reviewed-by: Christian König <christian.koenig@amd.com>
    Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>