tree 445e4519b2e8a39136f611f07db670d1e10ace6e
parent effe1105bef07f42366c20eac41b80ff9fcf675e
author Thomas Hellstrom <thellstrom@vmware.com> 1263418120 +0100
committer Dave Airlie <airlied@redhat.com> 1263435534 +1000

drm/ttm: Add a swap_notify callback.

This is needed for a bugfix in the vmwgfx driver.
Drivers may have GPU bindings on buffers that core TTM is not aware of,
and TTM may view those buffers as ordinary system memory buffers.
Add a notifier to such drivers when TTM is about to move the buffer
contents out to swappable memory. The driver must then release any
private GPU bindings on those buffers.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>