Hi,
qemu recently added a qmp/hmp command ("get-cpu-max") to determine
maximum number of supported CPUs for a VM. The output of this command
depends on the machine type that is used when it is called. The problem
here is that libvirt uses "-M none" while detecting capabilities and
with that machine type the get-cpu-max command returns always 1.
My question is: Is it worthwhile to do per machine type capability
detection? It definitely isn't worth doing just for the get-cpu-max
support, but it might be needed for Q35 or other stuff that may depend
on the actual machine type used.
Pros of this approach:
----------------------
- (possibly) more accurate capabilities
Cons:
-----
- ~10x more qemus started on libvirtd startup (one per machine type)
Thanks for your opinions.
Peter
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