Re: [PATCH 23/23] x86, PCI: add pcibios_root_rescan

Jan Beulich
2012-03-08T08:39:57Z

>>> On 08.03.12 at 05:27, Bjorn Helgaas <bhelgaas@google.com> wrote:
> Personally, I think we should put a stake in the ground and say "For
> machines newer than 2013, Linux will not blindly probe for PCI
> devices. If you want EDAC functionality, make sure your BIOS exposes
> the appropriate PCI host bridges." If OEMs do care about EDAC, it's a
> simple BIOS change to do this.
>
> I certainly don't think we need to add hotplug or bus rescan
> functionality to cover this case. This sort of stuff makes
> maintenance MUCH harder because we have to worry about all these
> corner cases.

I'm certainly fine with such a position, as long as this is made visible as
a policy and the other hack in the i7core edac driver to find non-
exposed devices gets removed as well. It was really the existing hack
(which worked only on a certain subset of systems) that made me try
find a more generic solution.

Jan