Re: [PATCH v8 6/9] pci: Introduce a domain number for pci_host_bridge.

From: Bjorn Helgaas
Date: Tue Jul 08 2014 - 14:42:20 EST

On Tue, Jul 8, 2014 at 4:46 AM, Liviu Dudau <Liviu.Dudau@xxxxxxx> wrote:
> On Tue, Jul 08, 2014 at 01:59:54AM +0100, Bjorn Helgaas wrote:

>> I wonder if it would help to make a weak pci_domain_nr() function that
>> returns "bridge->domain_nr". Then each arch could individually drop its
>> pci_domain_nr() definition as it was converted, e.g., something like this:
>> - Convert every arch pci_domain_nr() from a #define to a non-inline
>> function
>> - Add bridge.domain_nr, initialized from pci_domain_nr()
>> - Add a weak generic pci_domain_nr() that returns bridge.domain_nr
>> - Add a way to create a host bridge in a specified domain, so we can
>> initialize bridge.domain_nr without using pci_domain_nr()
>> - Convert each arch to use the new creation mechanism and drop its
>> pci_domain_nr() implementation
> I will try to propose a patch implementing this.

I think this is more of an extra credit, cleanup sort of thing. I
don't think it advances your primary goal of (I think) getting arm64
PCI support in. So my advice is to not worry about unifying domain
handling until later.

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