[libvirt] [Qemu-devel] [PATCH v2] vl.c: Support multiple CPU ranges on -numa option
Paolo Bonzini
pbonzini at redhat.com
Wed Feb 27 17:51:52 UTC 2013
Il 27/02/2013 18:38, Anthony Liguori ha scritto:
>> > The solution is "there is no way to override a previously specified
>> > key". Something like "-device
>> > virtio-scsi-pci,num_queues=1,num_queues=2" now works, let's make it an
>> > error instead.
> That breaks compatibility. The above may seem silly but consider:
>
> qemu -device virtio-scsi-pci,num_queues=1,id=foo \
> -set device.foo.num_queues=2
>
> This is more common than you would think primarily as a way to override
> options that libvirt has set either via the qemu extra args tag or a
> script wrapper of qemu.
"-set" could first delete a pre-existing option. We could also extend
"-set" to accept multiple values (like -set
device.foo.bar=baz,device.foo.qux=quux), which is useful also to set a
list option.
Paolo
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