Re: [Qemu-devel] [PATCH v3] vl.c: Support multiple CPU ranges on -numa option

[Michael Tokarev]

20.06.2013 13:52, Paolo Bonzini wrote:
> Il 20/06/2013 11:30, Igor Mammedov ha scritto:
>>>> libvirt uses the "cpus" option already, so we have to keep it working.
>> Sure, we can leave it as it's now for some time while a new interface is
>> introduced/adopted. And than later deprecate "cpus".
> 
> So, you used a new name because the new behavior of "-numa
> node,cpus=1-2,cpus=3-4" would be incompatible with the old.

BTW, as I tried to touch exactly the same place yesterday (trying
to convert it to QemuOpts) -- what does this "node" mean?

For example, with

  -device [type=]devicetype,foo=bar,xzy=abc

this creates a new device for each "invocation" of option.  But
what does this `-numa node' mean?  Can there be anything else
besides node?  Why it is needed/used for?

This -numa option is the last one which uses the old option
parsing mechanism (there's also some smbios-related thing
but it's simple to convert, I almost got it ready yesterday),
but it is rather non-standard.

Thanks,

/mjt