korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 04:18:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/gem: Adjust vma offset for framebuffer mmap offset

Browse Source 
When mapping a framebuffer object, the virtual memory area (VMA)
offset ('vm_pgoff') should be adjusted by the start of the
'vma_node' associated with the object. This ensures that the VMA
offset is correctly aligned with the corresponding offset within
the GGTT aperture.

Increment vm_pgoff by the start of the vma_node with the offset=
provided by the user.

Suggested-by: Chris Wilson <chris.p.wilson@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v4.9+
[Joonas: Add Cc: stable]
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240802083850.103694-2-andi.shyti@linux.intel.com
(cherry picked from commit 60a2066c50)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Andi Shyti 2024-08-02 10:38:49 +02:00 committed by Joonas Lahtinen
parent 1b85bdb0fa
commit 1ac5167b3a
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/gem/i915_gem_mman.c
View File

@ -1084,6 +1084,8 @@ int i915_gem_fb_mmap(struct drm_i915_gem_object *obj, struct vm_area_struct *vma
mmo = mmap_offset_attach(obj, mmap_type, NULL);
if (IS_ERR(mmo))
return PTR_ERR(mmo);
vma->vm_pgoff += drm_vma_node_start(&mmo->vma_node);
}
/*