Messages in this thread | | | Date | Mon, 17 Oct 2011 15:23:18 +0200 | From | Matthias Schniedermeyer <> | Subject | Re: Speed of RAM reserved with memmap kernel command line option. |
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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
-- Real Programmers consider "what you see is what you get" to be just as bad a concept in Text Editors as it is in women. No, the Real Programmer wants a "you asked for it, you got it" text editor -- complicated, cryptic, powerful, unforgiving, dangerous.
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