Re: [PATCH 6/6] x86/PCI: quirk Thunderbolt PCI-to-PCI bridges

[Yinghai Lu]

On Wed, Jun 26, 2013 at 3:26 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> On Wed, Jun 26, 2013 at 3:18 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
>> On Tue, Jun 25, 2013 at 10:22 AM, Mika Westerberg
>> <mika.westerberg@xxxxxxxxxxxxxxx> wrote:
>>> Thunderbolt PCI-to-PCI bridges typically use BIOS "assisted" enumeration.
>>> This means that the BIOS will allocate bridge resources based on some
>>> assumptions of a maximum Thunderbolt chain. It also disables native PCIe
>>> hotplug of the root port where the Thunderbolt host router is connected.
>
> We should not need tricks in this patch after
>
> https://patchwork.kernel.org/patch/2766521/
>
> [2/3] PCI / ACPI: Use boot-time resource allocation rules during hotplug
>

BTW, Rafael, looks like that "boot-time" is not accurate here.

During acpi hotplug, firmare could do extra help for us like assign
some resources to pci device bars, so it is NOT "boot-time".

Yinghai
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