From: Andrea Bolognani <abologna@redhat.com>
To: Marcel Apfelbaum <marcel@redhat.com>, qemu-devel@nongnu.org
Cc: Marcel Apfelbaum <mapfelba@redhat.com>,
laine@laine.org, Lukas Doktor <ldoktor@redhat.com>,
Eduardo Habkost <ehabkost@redhat.com>
Subject: Re: [Qemu-devel] Number of usable slots in PCIe Root Port / PCIe Switch Downstream Port
Date: Thu, 24 Aug 2017 10:54:01 +0200 [thread overview]
Message-ID: <1503564841.3438.23.camel@redhat.com> (raw)
In-Reply-To: <ddb6f49e-6617-a659-08bf-cf093f658a8c@redhat.com>
On Wed, 2017-08-23 at 23:16 +0300, Marcel Apfelbaum wrote:
> > Is such a configuration considered valid?
>
> Definitely no.
>
> > Or should
> > libvirt and the guest OS / firmware start allowing it?
>
> I thought libvirt does not allow it anyway and yes, is a bug,
> but considered low priority.
That's correct, libvirt knows those controllers only have
a single slot and will prevent you from adding more than
one device to them. So no change needed there.
IIUC Lukáš is using QEMU directly in (some parts of)
Avocado, so I imagine emitting an error rather than
silently accepting an invalid configuration would save
him some debugging time :) But he knows not to do that
now, so I guess low priority sounds about right.
Thanks for clarifying!
--
Andrea Bolognani / Red Hat / Virtualization
prev parent reply other threads:[~2017-08-24 8:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-23 16:46 [Qemu-devel] Number of usable slots in PCIe Root Port / PCIe Switch Downstream Port Andrea Bolognani
2017-08-23 20:16 ` Marcel Apfelbaum
2017-08-23 22:19 ` Eduardo Habkost
2017-08-24 8:54 ` Andrea Bolognani [this message]
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