diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2020-07-28 14:27:04 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-26 10:40:56 +0200 |
| commit | 04aeb884e8a5b1ab7571379becb50671a20bcfcf (patch) | |
| tree | 89a02f58a560caa86886bea0202801be370c0039 | |
| parent | 711f5688bb97966c20eca91ea17ab303e48c93e4 (diff) | |
drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access
[ Upstream commit c0001213d195d1bac83e0744c06ff06dd5a8ba53 ]
VMAs with a pg_offs that's offset from the start of the vma_node need
to adjust the offset within the BO accordingly. This matches the
offset calculation in ttm_bo_vm_fault_reserved.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Laurent Morichetti <laurent.morichetti@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/381169/
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 46dc3de7e81b..f2bad14ac04a 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -358,8 +358,10 @@ static int ttm_bo_vm_access_kmap(struct ttm_buffer_object *bo, static int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr, void *buf, int len, int write) { - unsigned long offset = (addr) - vma->vm_start; struct ttm_buffer_object *bo = vma->vm_private_data; + unsigned long offset = (addr) - vma->vm_start + + ((vma->vm_pgoff - drm_vma_node_start(&bo->base.vma_node)) + << PAGE_SHIFT); int ret; if (len < 1 || (offset + len) >> PAGE_SHIFT > bo->num_pages) |