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Re: [Qemu-devel] [PATCHv2 4/4] Warning messages on net devices hotplug
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCHv2 4/4] Warning messages on net devices hotplug |
Date: |
Tue, 23 Oct 2012 10:39:22 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121016 Thunderbird/16.0.1 |
On 10/23/2012 09:59 AM, Corey Bryant wrote:
> Only network devices are prevented, right?
>
> Also, as I mentioned before, can you limit this to the subset of options
> that cause execve() to be issued? For example, can we allow libvirt to
> pass an fd for hotplugging a network device (e.g. netdev_add tap,fd=23)?
> I don't know for sure but I'm guessing libvirt does that.
Correct, libvirt prefers passing network devices pre-opened via fds,
rather than having qemu exec scripts.
>> + manual. Also note that the hot plug is disabled when -sandbox
>> is in
>> + effect
>
> Not all hotplug abilities are disabled. Just network devices. This is
> missing a period too.
And not all network hotplug, just hotplug that requires use of exec
(again, fd passing bypasses the need for exec).
--
Eric Blake address@hidden +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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