Re: [Qemu-devel] [PATCH v2 4/4] qapi: discriminate CpuInfoFast on SysEmuTarget, not CpuInfoArch

[Eric Blake]

On 04/26/2018 02:41 PM, Eric Blake wrote:

> I also like that this approach is introspectible via 'query-qmp-schema'
> - if 'query-cpus-fast' has the "target" member, then you know that it is
> fixed (you can ignore "arch" in that case, even though you know it
> works); if it lacks "target", you know that "arch":"s390x" is the only

Correcting myself: "arch":"s390" is the magic string for older qemu; and
your mapping function from target to arch keeps it that way, so that
older clients not aware of "target":"s390x" still get the right behavior.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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