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

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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.
> 
> The first patch merely *prints* the downstream range, without saving it.
> I posted that patch alone previously, before I realized that we actually
> need to save the range for _CBA.

Len,

Since you put the IORESOURCE_BUS patches in acpi-test, let me rework
this series to use that instead of faking it.

Bjorn
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