Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona

[Andi Kleen]

> for setting mmio to accessing pci conf space, need to set sth on MSR.
> So the BIOS need to make it right..., otherwise OS need to set that
> when booting every cpu...to workaround it to make MMCONFIG working.

Yes the BIOS has to get some things right. After all that's the BIOS job.
And the BIOS knows much more about the hardware than the generic
kernel.  x86 Linux is not trying to be a BIOS too.

-Andi
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