Here is a cheap way for this test to give consistent results. This
doesn't change the usefulness of this test, hopefully.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85270
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
One proposed solution only fixes up the SNA behaviour, so reduce the
test case to probe only that particular pathology.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The bug doesn't seem to occur on SNB, so we can skip the workaround and
hence we do not expect the kernel to prevent invalid relocated offsets.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This test feeds a batch containing self-references into the kernel and
checks that the relocation offsets remain as valid GTT addresses. This
is to exercise SNA passing in negative relocation deltas which can hang
the GPU if they wrap around.
References: https://bugs.freedesktop.org/show_bug.cgi?id=78533
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
