Chris Wilson d4a05bc009 igt/gem_concurrent_blit: Switch to a shared mmap for userptr
If we use a MAP_SHARED mmaping for the our backing storage for userptr,
then it will be inherited across the fork with the same address. ideal
for continuity testing of children.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-01-23 09:08:39 +00:00
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