Re: Speed of RAM reserved with memmap kernel command line option.

[Matthias Schniedermeyer]

On 17.10.2011 07:51, Charles Buysschaert wrote:
> Hello all, 
> 
> We are writing a PCI-e "frame grabber-like" driver for linux 2.6 kernel.
...
> I guess cache is not used. Does anyone know if there is a way to speed this up? How could we set that area to "cached"? 

Smells to me like you are missing a mapping in MTRR ...
Documentation/x86/mtrr.txt

... or PAT.
Documentation/x86/pat.txt





Bis denn

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