Re: [libvirt] [Qemu-devel] [PATCH 3/5] qemu: add QEMU_CAPS_MACHINE_VMPORT_OPT
On 20 April 2015 at 13:39, Marc-André Lureau <marcandre.lureau(a)gmail.com> wrote:
Hi
On Tue, Apr 14, 2015 at 6:07 PM, Eric Blake <eblake(a)redhat.com> wrote:
>
> > + { "machine", "vmport", QEMU_CAPS_MACHINE_VMPORT_OPT },
>
> Ouch. qemu commit 0a7cf21 fixes what would have been a regression in
> 2.3 at exposing "mem-merge" through query-command-line-options, but it
> does NOT expose "vmport", which is a per-architecture option rather than
> a generic -machine option. Which means that even though qemu 2.2
> (perhaps wrongly) advertised "vmport" for all machines (even when it was
> not supported), 2.3 will not advertise it, and we are hoping for a
> better solution in 2.4 for properly advertising vmport on an
> as-appropriate basis.
Thanks Eric for finding out this regression.
Is anybody working on a better solution? I can imagine either a new qmp
machine-list-properties, or perhaps more reasonably a new properties array
in query-machines reply.
Unless this is an absolutely critical "we cannot ship 2.3 without
a fix" bug (in which case somebody should yell now and you really
need a patch on the list within a day or so), you've probably missed
the 2.3 boat at this point.
-- PMM