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drm/amdgpu: Set TTM_PAGE_FLAG_SG earlier for userprt BOs

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Because TTM do page counting on userptr BOs which is actually not
needed. To avoid that, lets set TTM_PAGE_FLAG_SG after tt_create and
before tt_populate.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
xinhui pan 2021-06-16 12:32:34 +08:00 committed by Alex Deucher
parent d472b36efb
commit 84408d5f38
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
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@ -1129,8 +1129,6 @@ static int amdgpu_ttm_tt_populate(struct ttm_device *bdev,
ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL);
if (!ttm->sg)
return -ENOMEM;
ttm->page_flags |= TTM_PAGE_FLAG_SG;
return 0;
}
@ -1156,7 +1154,6 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_device *bdev,
amdgpu_ttm_tt_set_user_pages(ttm, NULL);
kfree(ttm->sg);
ttm->sg = NULL;
ttm->page_flags &= ~TTM_PAGE_FLAG_SG;
return;
}
@ -1190,6 +1187,9 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_buffer_object *bo,
return -ENOMEM;
}
/* Set TTM_PAGE_FLAG_SG before populate but after create. */
bo->ttm->page_flags |= TTM_PAGE_FLAG_SG;
gtt = (void *)bo->ttm;
gtt->userptr = addr;
gtt->userflags = flags;