Overlaping IO resource for AMD K8
YhLu at tyan.com
Tue Jan 11 09:03:01 CET 2005
>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
From: Li-Ta Lo [mailto:ollie at lanl.gov]
Sent: Tuesday, January 11, 2005 11:13 AM
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
> > 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.
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