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authorJason Gunthorpe <jgg@mellanox.com>2019-11-12 16:22:27 -0400
committerJason Gunthorpe <jgg@mellanox.com>2019-11-23 19:56:44 -0400
commita9ae8731e6e52829a935d81a65d7f925cb95dbac (patch)
tree8c3d59c16a99e2c3403b99fc6c1f938275d09e81 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
parent20fef4ef84bfb07d3658ff1347951c489fe7bafa (diff)
drm/amdgpu: Call find_vma under mmap_sem
find_vma() must be called under the mmap_sem, reorganize this code to do the vma check after entering the lock. Further, fix the unlocked use of struct task_struct's mm, instead use the mm from hmm_mirror which has an active mm_grab. Also the mm_grab must be converted to a mm_get before acquiring mmap_sem or calling find_vma(). Fixes: 66c45500bfdc ("drm/amdgpu: use new HMM APIs and helpers") Fixes: 0919195f2b0d ("drm/amdgpu: Enable amdgpu_ttm_tt_get_user_pages in worker threads") Link: https://lore.kernel.org/r/20191112202231.3856-11-jgg@ziepe.ca Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by: Philip Yang <Philip.Yang@amd.com> Tested-by: Philip Yang <Philip.Yang@amd.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.h')
0 files changed, 0 insertions, 0 deletions