Chris Wilson c5b0293ca3 igt/gem_softpin: Exercise snoop+uncached abutting
snooped objects are not allowed to abutt uncached objects on older gen
(!llc and global GTT) or else the GPU may hang if it prefetches across a
page boundary into a different memory type (i.e. CS reading from snoop).
The kernel should be checking the alignment rules as normal.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-01-23 18:35:20 +00:00
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