diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2021-10-26 11:59:28 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-10-28 14:26:12 -0400 |
| commit | 3b8a23ae52dfbf785ea6f7c81358b1225a6bd339 (patch) | |
| tree | 17e7481199a63b271df91b7f0db29797fe054ed8 /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | |
| parent | 68daadf3d673568bb7122b1683fd8b0e27c55d9b (diff) | |
drm/amdkfd: restore userptr ignore bad address error
The userptr can be unmapped by application and still registered to
driver, restore userptr work return user pages will get -EFAULT bad
address error. Pretend this error as succeed. GPU access this userptr
will have VM fault later, it is better than application soft hangs with
stalled user mode queues.
v2: squash in warning fix (Alex)
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 590537b62a0a..17b5dd6adf8c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -696,6 +696,9 @@ int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages) true, NULL); out_unlock: mmap_read_unlock(mm); + if (r) + pr_debug("failed %d to get user pages 0x%lx\n", r, start); + mmput(mm); return r; |