drm/vmwgfx: Avoid pinning fbdev framebuffers

Browse source

fbdev framebuffers were previously pinned to be able to keep them mapped
across updates.

This commit introduces a mechanism that instead revalidates the map on
each update, keeping the map cached across updates. The cached map is torn
down if the underlying pages change. Typically on buffer object moves and
swapouts.

This should be nicer to the system when we have resource contention.

Testing done: Basic fbdev functionality under Fedora 27.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>

...

This commit is contained in:

Thomas Hellstrom 2018-03-22 10:19:01 +01:00

parent dc366364c4

commit bf833fd36f

5 changed files with 98 additions and 49 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c

View file

51

drivers/gpu/drm/vmwgfx/vmwgfx_dmabuf.c

View file

5

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

View file

67

drivers/gpu/drm/vmwgfx/vmwgfx_fb.c

View file

23

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

View file