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Re: [Qemu-devel] [PATCH] usb: Remove legacy -usbdevice option

From: Thomas Huth
Subject: Re: [Qemu-devel] [PATCH] usb: Remove legacy -usbdevice option
Date: Thu, 4 Jan 2018 13:50:57 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0

On 04.01.2018 13:49, Peter Maydell wrote:
> On 4 January 2018 at 12:44, Thomas Huth <address@hidden> wrote:
>> On 04.01.2018 13:33, Peter Maydell wrote:
>>> The diffstat is nice, but can we retain the "please use
>>> $NEWOPTION instead of $OLDOPTION" message for a bit?
>>> I'm pretty sure there will be users out there who've
>>> been happily ignoring deprecation notices, and I think
>>> we'll reduce the amount of support traffic if they
>>> get a new QEMU with a specific error message telling them
>>> what they need to fix, rather than one which just prints
>>> a generic "unknown option" message.
>> Sounds like a good idea at the first glance ... but at a second thought:
>> Don't we confuse the management layers like libvirt this way, which
>> might probe for the availability of this option by executing QEMU with
>> this parameter?
> If they do (which I'd hope they don't) then QEMU will
> exit with a failure status code, which they ought to
> identify as "not supported".

OK, makes sense. I'll cook a v2 of the patch accordingly...


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