[libvirt] [PATCH 3/5] qemu: add QEMU_CAPS_MACHINE_VMPORT_OPT

[Martin Kletzander]

On Tue, Apr 14, 2015 at 10:28:23AM -0600, Eric Blake wrote:
>On 04/14/2015 10:24 AM, Martin Kletzander wrote:
>
>>>
>>> That works with the following change:
>>>
>>
>> ACK with that squashed in, no need to resend it ;)
>>
>>> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
>>> index 768cef1..1b20a7f 100644
>>> --- a/src/qemu/qemu_capabilities.c
>>> +++ b/src/qemu/qemu_capabilities.c
>>> @@ -2510,6 +2510,7 @@ struct virQEMUCapsCommandLineProps {
>>>
>>> static struct virQEMUCapsCommandLineProps virQEMUCapsCommandLine[] = {
>>>     { "machine", "mem-merge", QEMU_CAPS_MEM_MERGE },
>>> +    { "machine", "vmport", QEMU_CAPS_MACHINE_VMPORT_OPT },
>
>But this will break on qemu 2.3, unless something changes there.  I
>don't want to do a version check, but I also don't want something that
>works by accident in qemu 2.2 start failing with qemu 2.3.
>

I'm failing to find any compromise here.  We would have to wait for
QEMU to fix the introspection, but in the meantime we'd be unable to
fix it ourselves.  And since 2.3 is right around the corner, we'd have
to wait for 2.4.

Can we at least add all the patches except the hunks that set the
capability and decide later on how to enable that, at least for any
possible adopters to minimize their need for non-upstream patches?
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