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Re: [libvirt] [rebased][PATCH 0/4] add pci-bridge support



ping ...

在 2013-01-30三的 10:30 +0800,liguang写道:
> 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'/>
>    </controller>
>    <sound model='ac97'>
>       <address type='pci' domain='0x0000' bus='0x01' slot='0x02' function='0x0'/>
>    </sound>
>    <video>
>       <model type='cirrus' vram='9216' heads='1'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
>    </video>
> 
> 
>  src/conf/domain_conf.c        |    100 ++++-
>  src/conf/domain_conf.h        |    1 +
>  docs/schemas/domaincommon.rng |    1 +
>  src/qemu/qemu_capabilities.c  |    2 +
>  src/qemu/qemu_capabilities.h  |    1 +
>  src/qemu/qemu_command.c       |   70 ++++++++++++++++++++-----
>  6 files changed, 152 insertions(+), 23 deletions(-)




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