Re: [PATCH v2 0/3] pci_root: track downstream bus range for _CBA

From: Bjorn Helgaas <>
Date: Thu, 4 Feb 2010 11:29:39 -0700
On Tuesday 10 November 2009 10:11:28 am Bjorn Helgaas wrote:
> The PCI Firmware Spec requires BIOS to use _CBA, not MCFG, to report
> MMCONFIG regions of hot-pluggable host bridges.  Therefore, if the
> hardware and firmware support host bridge hotplug, we will encounter
> _CBA even if Linux itself doesn't support hotplug.
> These patches make the pci_root driver keep track of the downstream
> bus range and make it available so arch-specific code can register
> MMCONFIG regions if necessary.

I think these patches got forgotten, but I still think they're
worthwhile.  I'd be glad to refresh them if necessary.

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Received on 2010-02-05 05:29:26

This archive was generated by hypermail 2.2.0 : 2010-02-05 05:29:40 EST