Re: PCI Bursting with PIO

[Dan Gora]

On Fri, Feb 15, 2008 at 2:54 AM, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
> "Dan Gora" <dan.gora@xxxxxxxxx> writes:
>  >
>  > Is there any way to get PIO
>
>  I assume you really mean MMIO, not PIO. PIO would be port IO.

Sorry, I always saw it referred to as "Programmed I/O" as opposed to DMA...

>  You should set the MMIO mapping to write combining using an MTRR

Sorry to be thick here, but how would  I go about doing that?

>  You might need to add appropiate memory barriers if you rely
>  on write ordering though.

Ok, thanks for the info...

dan
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