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From: "Daniel P. Berrangé" <berrange@redhat.com>
To: Peter Xu <peterx@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	qemu-devel@nongnu.org, Markus Armbruster <armbru@redhat.com>,
	Eric Auger <eric.auger@redhat.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Igor Mammedov <imammedo@redhat.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>
Subject: Re: [PATCH 4/4] vl: Prioritize realizations of devices
Date: Thu, 2 Sep 2021 16:06:44 +0100	[thread overview]
Message-ID: <YTDohPo+srXco0pI@redhat.com> (raw)
In-Reply-To: <YTDd31TI0fW83ND2@t490s>

On Thu, Sep 02, 2021 at 10:21:19AM -0400, Peter Xu wrote:
> Hi, Dan,
> 
> On Thu, Sep 02, 2021 at 02:53:00PM +0100, Daniel P. Berrangé wrote:
> > The correct ordering of devices/backends is generally pretty obvious
> > for libvirt to determine. Most of the problems we've had related to
> > ordering are on the QEMU side, because the ARGV given to QEMU made
> > correct sense if parsed left-to-right, but QEMU didn't actually process
> > them in that order. We've patched QEMU to hack around its inability to
> > honour the CLI order repeatedly.
> 
> Is there a pointer to the problem?

The biggest problem was with -object, where some objects need to be
created before chardevs and some created after chardevs.
See object_create_early() method in softmmu/vl.c for the gross
hardcoded hacks


Regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
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  parent reply	other threads:[~2021-09-02 15:08 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 19:42 [PATCH 0/4] vl: Prioritize device realizations Peter Xu
2021-08-18 19:42 ` [PATCH 1/4] qdev-monitor: Trace qdev creation Peter Xu
2021-08-18 19:43 ` [PATCH 2/4] qemu-config: Allow in-place sorting of QemuOptsList Peter Xu
2021-08-18 19:43 ` [PATCH 3/4] qdev: Export qdev_get_device_class() Peter Xu
2021-08-18 19:43 ` [PATCH 4/4] vl: Prioritize realizations of devices Peter Xu
2021-08-23 18:49   ` Eduardo Habkost
2021-08-23 19:18     ` Peter Xu
2021-08-23 21:07       ` Eduardo Habkost
2021-08-23 21:31         ` Peter Xu
2021-08-23 21:54           ` Michael S. Tsirkin
2021-08-23 22:51             ` Peter Xu
2021-08-23 21:56           ` Eduardo Habkost
2021-08-23 23:05             ` Peter Xu
2021-08-25  9:39               ` Markus Armbruster
2021-08-25 12:28                 ` Markus Armbruster
2021-08-25 21:50                   ` Peter Xu
2021-08-26  3:50                     ` Peter Xu
2021-08-26  8:01                       ` Markus Armbruster
2021-08-26 11:36                         ` Igor Mammedov
2021-08-26 13:43                           ` Peter Xu
2021-08-30 19:02                             ` Peter Xu
2021-08-31 11:35                               ` Markus Armbruster
2021-09-02  8:26                               ` Igor Mammedov
2021-09-02 13:45                                 ` Peter Xu
2021-09-02 13:53                                   ` Daniel P. Berrangé
2021-09-02 14:21                                     ` Peter Xu
2021-09-02 14:57                                       ` Markus Armbruster
2021-09-03 15:48                                         ` Peter Xu
2021-09-02 15:06                                       ` Daniel P. Berrangé [this message]
2021-09-02 15:26                                   ` Markus Armbruster
2021-09-03 13:00                                   ` Igor Mammedov
2021-09-03 16:03                                     ` Peter Xu
2021-09-06  8:49                                       ` Igor Mammedov
2021-09-02  7:46                             ` Igor Mammedov
2021-08-26  4:57                     ` Markus Armbruster
2021-08-23 22:05       ` Michael S. Tsirkin
2021-08-23 22:36         ` Peter Xu
2021-08-24  2:52           ` Jason Wang
2021-08-24 15:50             ` Peter Xu
2021-08-25  4:23               ` Jason Wang
2021-09-06  9:22                 ` Eric Auger
2021-08-24 16:24         ` David Hildenbrand
2021-08-24 19:52           ` Peter Xu
2021-08-25  8:08             ` David Hildenbrand
2021-08-24  2:51       ` Jason Wang
2021-10-20 13:44 ` [PATCH 0/4] vl: Prioritize device realizations David Hildenbrand
2021-10-20 13:48   ` Daniel P. Berrangé
2021-10-20 13:58     ` David Hildenbrand
2021-10-21  4:20   ` Peter Xu
2021-10-21  7:17     ` David Hildenbrand
2021-10-21  8:00       ` Peter Xu
2021-10-21 16:54         ` David Hildenbrand

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