On 06/06/2013 08:01 PM, Michael S. Tsirkin wrote: > 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.
So, did it happen? I would be happy :) When is it expected to reach upstream? Thanks! > No need to repost for the lack of -M flag - I wish there was a way > to specify that in git config. > -- Alexey
