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| author | Christian König <ckoenig.leichtzumerken@gmail.com> | 2021-07-28 16:05:49 +0300 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2021-08-23 14:43:04 +0300 |
| commit | b7e8b086ffbc03b890ed22ae63ed5e5bd319d184 (patch) | |
| tree | 117a0579aec8de08ab414bac12d1aa546ab851ee /drivers | |
| parent | e54163e9184e57c95af707aad706b5f3f9aa2d4e (diff) | |
| download | linux-b7e8b086ffbc03b890ed22ae63ed5e5bd319d184.tar.xz | |
drm/amdgpu: unbind in amdgpu_ttm_tt_unpopulate
Doing this in amdgpu_ttm_backend_destroy() is to late.
It turned out that this is not a good idea at all because it leaves pointers
to freed up system memory pages in the GART tables of the drivers.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728130552.2074-2-christian.koenig@amd.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 9fd5db58067d..75d45623388a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1066,7 +1066,6 @@ static void amdgpu_ttm_backend_destroy(struct ttm_device *bdev, { struct amdgpu_ttm_tt *gtt = (void *)ttm; - amdgpu_ttm_backend_unbind(bdev, ttm); ttm_tt_destroy_common(bdev, ttm); if (gtt->usertask) put_task_struct(gtt->usertask); @@ -1148,6 +1147,8 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_device *bdev, struct amdgpu_ttm_tt *gtt = (void *)ttm; struct amdgpu_device *adev; + amdgpu_ttm_backend_unbind(bdev, ttm); + if (gtt && gtt->userptr) { amdgpu_ttm_tt_set_user_pages(ttm, NULL); kfree(ttm->sg); |