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From: Paolo Bonzini <pbonzini@redhat.com>
To: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [PATCH] vl, qemu-config: remove -set
Date: Wed, 11 Nov 2020 16:48:49 +0100	[thread overview]
Message-ID: <a210eaa2-6d2c-0d7c-d7e3-96c73acaf6b0@redhat.com> (raw)
In-Reply-To: <20201111150336.GF906488@redhat.com>

On 11/11/20 16:03, Daniel P. Berrangé wrote:
> iotest 068 uses -set and qtest vhost-user-text.c also does
> 
> IOW, it looks like it is valid to use -set, even if you're not using
> -readconfig.
> 
> Libvirt doesn't use -set, but we've had users who make use of libvirt
> command line passthrough for QEMU with -set.

Hmm, indeed:

https://patchwork.kernel.org/project/qemu-devel/patch/20181218041625.24969-16-mst@redhat.com/

> IOW, I'm not convinced real world usage is near zero as suggested.

Yes, perhaps it's not. :)  Though for both tests you pointed out it's 
even cleaner not to use it, there seems to be real world usage at least 
with "device".

It is probably more viable to deprecate or even forbid usage of "-set" 
with anything but "device".  vhost-user-test.c would still be affected, 
but it's a relatively small patch.

Paolo



  reply	other threads:[~2020-11-11 15:50 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-11 13:57 [PATCH] vl, qemu-config: remove -set Paolo Bonzini
2020-11-11 15:03 ` Daniel P. Berrangé
2020-11-11 15:48   ` Paolo Bonzini [this message]
2020-11-12  6:55     ` Markus Armbruster
2020-11-12  7:08       ` Paolo Bonzini
2020-11-12 11:26   ` Gerd Hoffmann
2020-11-12 13:47     ` Paolo Bonzini

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