[Linux-Biella] Scheda Grafica e allocazioni MTRR, forse ho trovato il problema..

[Daniele (Mastro)]

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Paul TT ha scritto:
> 
> da Documentation/mtrr.txt (sorgenti kernel):
> 
> MTRR (Memory Type Range Register) control
> 3 Jun 1999
> Richard Gooch
> <rgooch a atnf.csiro.au>
> 
>   On Intel P6 family processors (Pentium Pro, Pentium II and later)
>   the Memory Type Range Registers (MTRRs) may be used to control
>   processor access to memory ranges. This is most useful when you have
>   a video (VGA) card on a PCI or AGP bus. Enabling write-combining
>   allows bus write transfers to be combined into a larger transfer
>   before bursting over the PCI/AGP bus. This can increase performance
>   of image write operations 2.5 times or more.
> 
> etcetc
> 
> 'na cagata del bios parrebbe, 'nsomma......
> ma comunque serve :-)
> 

tu che sei illuminato... :D
sai mica come potrei fare per liberare un paio di registri dell'mtrr da
dare alla scheda video?

sai...
2.5 volte + veloce non + proprio una bazzeccola...

- --
ciao,
Daniele
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