From: Felix Kuehling <[email protected]> [ 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 <[email protected]> Tested-by: Laurent Morichetti <[email protected]> Signed-off-by: Christian König <[email protected]> Link: https://patchwork.freedesktop.org/patch/381169/ Signed-off-by: Sasha Levin <[email protected]> --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 46dc3de7e81bf..f2bad14ac04ab 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) -- 2.25.1 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
