qemu -numa option and non-contiguous CPU ranges

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Hi,

I just noticed libvirt tries to use the -numa option in a way that qemu
never understood: if a node is configured to have a non-contiguous set
of CPUs, it tries to generate a command-line option that looks like:

"-numa node,nodeid=...,cpus=0,2,4,mem=..."
                            ^^^^^

But this format was never supported by qemu. This format is even a bit
weird, as "," is an option separator, and it is being used as a
separator _inside_ an option.

My question is: should we support this option format in qemu, or should
we change libvirt to use another format (that has yet to be implemented,
because currently there's no way to specify a non-contiguous set of CPUs
for a NUMA node).

Any suggestions?

-- 
Eduardo

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