# Re: Re: mttr failures on 2.6.12-mm1

- From: Antonino A. Daplas \<adaplas@gmail.com\>
- Date: 2005-07-29 22:20:42 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2005/07/13455243
- Thread: https://ratatoskr.run/linux-fbdev/2005/07/13455216/t.md

```text
Andrew Morton wrote:
> "Antonino A. Daplas" [ref] wrote:
>>     vesafb: Fix mtrr bugs
>
> Thanks, Tony.
>
>>      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
>>
>
> Is an update to Documentation/kernel-parameters.txt or
> Documentation/fb/vesafb.txt needed?
>

Yes. I'll submit a patch ASAP.

Tony


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