linux_dsm_epyc7002/drivers/gpu
Chris Wilson d323c9b882 drm/i915/userptr: Handle unlocked gup retries
Enable gup to retry and fault the pages outside of the mmap_sem lock in
our worker. As we are inside our worker, outside of any critical path,
we can allow the mmap_sem lock to be dropped in order to service a page
fault; this in turn allows the mm to populate the page using a slow
fault handler.

References: 5b56d49fc3 ("mm: add locked parameter to get_user_pages_remote()")
Testcase: igt/gem_userptr/userfault
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191111133205.11590-2-chris@chris-wilson.co.uk
2019-11-11 15:46:45 +00:00
..
drm drm/i915/userptr: Handle unlocked gup retries 2019-11-11 15:46:45 +00:00
host1x
ipu-v3
vga
Makefile