RE: Overlaping IO resource for AMD K8

[YhLu]

> As the Nvidia card it does
> not have PCI IO resource so we got the 20000 to 1ffff thing.

It mean it doesn't allocate resource to it. Limit<start

YH

-----Original Message-----
From: Li-Ta Lo [mailto:[e-mail]] 
Sent: Tuesday, January 11, 2005 11:13 AM
To: YhLu
Cc: LinuxBIOS; Eric Biederman
Subject: RE: Overlaping IO resource for AMD K8

On Tue, 2005-01-11 at 12:02, Li-Ta Lo wrote:
> On Tue, 2005-01-11 at 11:56, YhLu wrote:
> > Ollie,
> >
> > I recall sth about mtrr setting, I wonder if I enable the NC could

affect
> > your code. Please check cpu/x86/mtrr/mtrr.c about enable NC below 4G.
>
> I think there is some problem with the resource allocation. If the vga
> card has PCI IO resource then there will be no overlaping. If it does
> not have PCI IO resource then there will be overlaping.

There is really a but in the resource allocation. Please take a look at
the attached log files. The ATI card has PCI IO resource so there
is no bogus resource in the northbridge. As the Nvidia card it does
not have PCI IO resource so we got the 20000 to 1ffff thing.

Ollie