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author | Antonino A. Daplas <adaplas@gmail.com> | 2005-07-29 14:03:31 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-29 15:01:13 -0700 |
commit | 80625942094b114d85811e5ff1fbc9e06dabe0ff (patch) | |
tree | 66c6e49c4a24d7338d4510be449e4cc17dc95e29 /CREDITS | |
parent | 655a0a7799cddf9a469916c07ac22f1106abc2be (diff) | |
download | linux-3.10-80625942094b114d85811e5ff1fbc9e06dabe0ff.tar.gz linux-3.10-80625942094b114d85811e5ff1fbc9e06dabe0ff.tar.bz2 linux-3.10-80625942094b114d85811e5ff1fbc9e06dabe0ff.zip |
[PATCH] vesafb: Fix mtrr bugs
>> vesafb: mode is 800x600x16, linelength=1600, pages=16
>> vesafb: scrolling: redraw
>> vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
>> mtrr: type mismatch for fc000000,1000000 old: write-back new: write-
>> combining
Range is already set to write-back, vesafb attempts to add a write-combining
mtrr (default for vesafb).
>> mtrr: size and base must be multiples of 4 kiB
This is a bug, vesafb attempts to add a size < PAGE_SIZE triggering
the messages below.
To eliminate the warning messages, you can add the option mtrr:2 to add a
write-back mtrr for vesafb. Or just use nomtrr option.
1. Fix algorithm for finding the best power of 2 size with mtrr_add().
2. Add option to choose the mtrr type by extending the mtrr boot option:
mtrr:n where n
0 = no mtrr (equivalent to using the nomtrr option)
1 = uncachable
2 = write back
3 = write combining (default)
4 = write through
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 'CREDITS')
0 files changed, 0 insertions, 0 deletions