tree 91992251a5ff8967159fcfd7802732e14369d9de
parent 0057f1809d44b26765ec2374e0107a2f8ab256f5
author Andy Lutomirski <luto@MIT.EDU> 1306419211 -0400
committer Paul Mundt <lethal@linux-sh.org> 1307002684 +0900

efifb: Enable write-combining

Running fbcon on an uncached framebuffer is remarkably slow.  So try
to enable write combining in efifb.

Without this patch, it takes 5.8 seconds from efifb probe to i915
probe (default options; no plymouth or quiet mode).  With this patch,
it only takes 1.7 seconds.  That means we wasted over 4 seconds just
writing to UC memory.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>