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| author |   Dave Airlie <airlied@redhat.com> | 2019-11-04 09:27:41 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2019-11-04 09:28:51 +1000 |
| commit | 633aa7e53a66b39b7205d4d2a221cda7eeb087c9 (patch) | |
| tree | 82ba46f4cddd70cbc9c0391502e58e0f93f244be /Documentation/gpu | |
| parent | Merge tag 'topic/mst-suspend-resume-reprobe-2019-10-29-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next (diff) | |
| parent | Revert "dma-buf: Add dma-buf heaps framework" (diff) | |
| download | wireguard-linux-633aa7e53a66b39b7205d4d2a221cda7eeb087c9.tar.xz wireguard-linux-633aa7e53a66b39b7205d4d2a221cda7eeb087c9.zip | |
Merge tag 'drm-misc-next-2019-10-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 5.5:
UAPI Changes:
-dma-buf: Introduce and revert dma-buf heap (Andrew/John/Sean)
Cross-subsystem Changes:
- None
Core Changes:
-dma-buf: add dynamic mapping to allow exporters to choose dma_resv lock
state on mmap/munmap (Christian)
-vram: add prepare/cleanup fb helpers to vram helpers (Thomas)
-ttm: always keep bo's on the lru + ttm cleanups (Christian)
-sched: allow a free_job routine to sleep (Steven)
-fb_helper: remove unused drm_fb_helper_defio_init() (Thomas)
Driver Changes:
-bochs/hibmc/vboxvideo: Use new vram helpers for prepare/cleanup fb (Thomas)
-amdgpu: Implement dma-buf import/export without drm helpers (Christian)
-panfrost: Simplify devfreq integration in driver (Steven)
Cc: Christian König <christian.koenig@amd.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Steven Price <steven.price@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031193015.GA243509@art_vandelay
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/todo.rst | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 73c51b5a0997..6792fa9b6b6b 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -206,10 +206,10 @@ Generic fbdev defio support --------------------------- The defio support code in the fbdev core has some very specific requirements, -which means drivers need to have a special framebuffer for fbdev. Which prevents -us from using the generic fbdev emulation code everywhere. The main issue is -that it uses some fields in struct page itself, which breaks shmem gem objects -(and other things). +which means drivers need to have a special framebuffer for fbdev. The main +issue is that it uses some fields in struct page itself, which breaks shmem +gem objects (and other things). To support defio, affected drivers require +the use of a shadow buffer, which may add CPU and memory overhead. Possible solution would be to write our own defio mmap code in the drm fbdev emulation. It would need to fully wrap the existing mmap ops, forwarding |