Files
linux/drivers
Philip Yang 915d3eecfa drm/amdgpu: replace get_user_pages with HMM mirror helpers
Use HMM helper function hmm_vma_fault() to get physical pages backing
userptr and start CPU page table update track of those pages. Then use
hmm_vma_range_done() to check if those pages are updated before
amdgpu_cs_submit for gfx or before user queues are resumed for kfd.

If userptr pages are updated, for gfx, amdgpu_cs_ioctl will restart
from scratch, for kfd, restore worker is rescheduled to retry.

HMM simplify the CPU page table concurrent update check, so remove
guptasklock, mmu_invalidations, last_set_pages fields from
amdgpu_ttm_tt struct.

HMM does not pin the page (increase page ref count), so remove related
operations like release_pages(), put_page(), mark_page_dirty().

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:03:45 -05:00
..
2019-02-18 13:27:15 +10:00
2018-12-29 08:20:44 -07:00
2018-12-10 10:17:45 +01:00
2019-01-09 19:20:31 -05:00
2019-01-26 11:14:25 +01:00
2019-02-01 15:53:54 +01:00
2019-02-13 08:41:15 +01:00
2018-12-06 15:45:46 +01:00
2019-02-18 13:27:15 +10:00
2018-12-24 12:06:56 +01:00
2019-02-18 13:27:15 +10:00
2019-01-28 22:53:09 -08:00