Re: [patch 2.6.13] x86: check host bridge when applying vendor quirks

[Piter PUNK <piterpk@terra.com.br>]

Andi Kleen wrote:
> On Friday 09 September 2005 04:33, Chuck Ebbert wrote:
>
> > I was looking at the i386 ACPI early quirk code and x86_64 equivalent
> > and it seems to me it should be checking the host bridge vendor, not
> > the one for various PCI bridges.  Nvidia might release some kind of
> > PCI card with an embedded bridge that would break this code, for
> > example.  I made this patch but I can't test it:
>
> It's wrong. On AMD K8 systems the host bridge is always from
> AMD because the Northbridge is part of the CPU.

Hmmm... no.

root@Weasley:/etc# lspci
00:00.0 Host bridge: ATI Technologies Inc: Unknown device 5950
<...many things...>
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
Miscellaneous Control

The Athlon64 machines has an external host bridge. You can look the
ATI Host Bridge in the first line of lspci.

Piter PUNK
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