diff options
author | Antonino A. Daplas <adaplas@gmail.com> | 2005-11-07 04:00:49 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 10:53:52 -0500 |
commit | 8a0934f2969df4cdea81cf48fde4c8626b32325d (patch) | |
tree | cba3aa7d1367d4916a39b2113e1c9805e49b80ca /Documentation/fb/vesafb.txt | |
parent | 2726bff34441dce3854c62c3748bac2e7879e791 (diff) |
[PATCH] vesafb: Disable mtrr as the default
vesafb occassionally gets the size wrong when setting the mtrr. When X or DRI
attempts to set the mtrr, it will fail due to range overlap significantly
affecting their performance. Disable mtrr and let the user explicitly enable
it with the mtrr:n option.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/fb/vesafb.txt')
-rw-r--r-- | Documentation/fb/vesafb.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/fb/vesafb.txt b/Documentation/fb/vesafb.txt index 62db6758d1c1..ee277dd204b0 100644 --- a/Documentation/fb/vesafb.txt +++ b/Documentation/fb/vesafb.txt | |||
@@ -146,10 +146,10 @@ pmipal Use the protected mode interface for palette changes. | |||
146 | 146 | ||
147 | mtrr:n setup memory type range registers for the vesafb framebuffer | 147 | mtrr:n setup memory type range registers for the vesafb framebuffer |
148 | where n: | 148 | where n: |
149 | 0 - disabled (equivalent to nomtrr) | 149 | 0 - disabled (equivalent to nomtrr) (default) |
150 | 1 - uncachable | 150 | 1 - uncachable |
151 | 2 - write-back | 151 | 2 - write-back |
152 | 3 - write-combining (default) | 152 | 3 - write-combining |
153 | 4 - write-through | 153 | 4 - write-through |
154 | 154 | ||
155 | If you see the following in dmesg, choose the type that matches the | 155 | If you see the following in dmesg, choose the type that matches the |