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Re: [Qemu-devel] [PATCH 6/8] pci: Simpler implementation of primary PCI

From: David Gibson
Subject: Re: [Qemu-devel] [PATCH 6/8] pci: Simpler implementation of primary PCI bus
Date: Thu, 23 May 2013 22:16:13 +1000
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, May 23, 2013 at 02:01:57PM +0300, Michael S. Tsirkin wrote:
> On Thu, May 09, 2013 at 10:31:10AM +1000, David Gibson wrote:
> > Currently pci_get_primary_bus() searches the list of root buses for one
> > with domain 0.  But since host buses are always registered with domain 0,
> > this just amounts to finding the only PCI host bus.
> > 
> > This simplifies the implementation by defining the primary PCI bus to
> > be the first one registered, using a global variable to track it.
> > 
> > Signed-off-by: David Gibson <address@hidden>
> This is the only part that I dislike.
> How about an explicit API to set the primary bus?
> Let machine types set it.

I guess, though I was hoping to avoid changing every bit of platform
code that sets up a PCI bus.

David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!

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