On Thu, Jun 06, 2013 at 10:04:58AM -0500, Anthony Liguori wrote: > "Michael S. Tsirkin" <m...@redhat.com> writes: > > > On Thu, Jun 06, 2013 at 06:48:44PM +1000, David Gibson wrote: > >> The current PCI subsystem has kind of half-hearted support for > >> multiple independent root buses - aka PCI domains - in the form of the > >> PCIHostBus structure and its domain field. However, it doesn't quite > >> work because pci_host_bus_register() is always called with a domain of > >> 0. > >> > >> Worse, though, the whole concept of numbered domains isn't general > >> enough. Many platforms can have independent root buses (usually on > >> wholly independent host bridges), but only x86 gives them a > >> hardware-significant domain number, essentially as a hack to allow all > >> the separate config spaces to be accessed via the same IO ports. > >> Linux guests on other platforms will show domain numbers in lspci, but > >> these are purely guest assigned, so qemu won't know about them. > >> > >> This patch series, therefore, removes the broken-as-is domain concept > >> from qemu, and replaces it with a different way of handling multiple > >> root buses, based on a host bridge class method to provide a > >> identifier for the root bus. This hook is designed in such a way as > >> to allow a single bridge object to support mutiple root buses with > >> future changes, which will allow future implementations of x86 north > >> bridges with multiple domains to be supported correctly, and in way > >> that matches the existing practice for all external interfaces. > >> > >> v2: > >> * Rework concept of "primary" bus in response to Michael Tsirkin's > >> comments. > > > > > > Looks good to me. > > > > Acked-by: Michael S. Tsirkin <m...@redhat.com> > > > > I'll wait a bit so others have a chance to comment, then apply > > if everyone is happy. > > > > No need to repost for the lack of -M flag - I wish there was a way > > to specify that in git config. > > [diff] > renames = true
Oh, thanks. I was looking for a way to configure that, but hadn't found it. -- 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_! http://www.ozlabs.org/~dgibson
pgpHXuflrhNNa.pgp
Description: PGP signature