Re: [libvirt] [Qemu-devel] [PATCH v2 0/2] add pci-bridge support

Now, it's impossible to arrange devices into multi-pci-bus, for example: <sound model='ac97'> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x1' slot='0x02' function='0x0'/> </video> libvirt will complain about "bus != 0", fortunately, qemu supports pci-to-pci bridge, if we want to use multi-pci-bus, we can define 2 pci bridge controllers, then attach 1 to the other as a subordinate pci-bus, so, 2 pci-buses appear. for example: <controller type='pci-bridge' index='0'/> <controller type='pci-bridge' index='1'> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' bridge='0'/> </controller> <sound model='ac97'> <address type='pci' domain='0x0000' bus='0x01' slot='0x02' function='0x0' bridge='1'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' bridge='0'/> </video> src/conf/device_conf.c | 11 ++++++++++- src/conf/device_conf.h | 1 + src/conf/domain_conf.c | 5 ++++- src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 25 ++++++++++++++++++++----- 5 files changed, 36 insertions(+), 7 deletions(-)