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| author | Philip Yang <Philip.Yang@amd.com> | 2019-07-02 18:39:45 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-07-08 13:55:00 -0500 |
| commit | e5eaa7cc0c0359cfe17b0027a6ac5eda7a9635db (patch) | |
| tree | 383355a66f171d13dc663426884a61c1c3cb796e /drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | |
| parent | 3e2bb60ab2b1d9371008d4a3d0b01cd28f505cb7 (diff) | |
| download | lwn-e5eaa7cc0c0359cfe17b0027a6ac5eda7a9635db.tar.gz lwn-e5eaa7cc0c0359cfe17b0027a6ac5eda7a9635db.zip | |
drm/amdgpu: Prepare for hmm_range_register API change (v2)
An upcoming change in the hmm_range_register API requires passing in
a pointer to an hmm_mirror instead of mm_struct. To access the
hmm_mirror we need pass bo instead of ttm to amdgpu_ttm_tt_get_user_pages
because mirror is part of amdgpu_mn structure, which is accessible from bo.
v2: fix building without CONFIG_HMM_MIRROR (Arnd)
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@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 | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index c9faa69cd677..333cfbdf6dd0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -731,8 +731,10 @@ struct amdgpu_ttm_tt { #define MAX_RETRY_HMM_RANGE_FAULT 16 -int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages) +int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages) { + struct hmm_mirror *mirror = bo->mn ? &bo->mn->mirror : NULL; + struct ttm_tt *ttm = bo->tbo.ttm; struct amdgpu_ttm_tt *gtt = (void *)ttm; struct mm_struct *mm = gtt->usertask->mm; unsigned long start = gtt->userptr; @@ -746,6 +748,12 @@ int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages) if (!mm) /* Happens during process shutdown */ return -ESRCH; + if (unlikely(!mirror)) { + DRM_DEBUG_DRIVER("Failed to get hmm_mirror\n"); + r = -EFAULT; + goto out; + } + vma = find_vma(mm, start); if (unlikely(!vma || start < vma->vm_start)) { r = -EFAULT; |