From: Stefan Berger <stefanb@linux.vnet.ibm.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] virtio-rng and fd passing
Date: Fri, 01 Mar 2013 15:34:27 -0500 [thread overview]
Message-ID: <513110D3.5030503@linux.vnet.ibm.com> (raw)
In-Reply-To: <87k3pqzy2y.fsf@codemonkey.ws>
On 03/01/2013 03:04 PM, Anthony Liguori wrote:
> Eric Blake <eblake@redhat.com> writes:
>
>> Stefan Berger and I discovered on IRC that virtio-rng is unable to
>> support fd passing. We attempted:
>>
>> qemu-system-x86_64 ... -add-fd set=4,fd=34,opaque=RDONLY:/dev/urandom
>> -object rng-random,id=rng0,filename=/dev/fdset/4 -device
>> virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x6
> Why are you using th rng-random backend instead of the rng-egd backend?
I followed the example on the libvirt website trying out the XML for the
rng device while adpating the libvirt code to use fd passing and
generating the -add-fd command line parameters.
>
> You can pass chardevs to the egd backend. It's really not a good idea
> to pass a fd via rng-rangom.
Fine, then we won't use fd passing for this device, whatever the reason
may be.
Stefan
next prev parent reply other threads:[~2013-03-01 20:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <512FF819.7050505@redhat.com>
2013-03-01 9:51 ` [Qemu-devel] virtio-rng and fd passing Paolo Bonzini
2013-03-04 4:29 ` Amit Shah
2013-03-06 6:20 ` Amit Shah
2013-03-01 19:37 ` H. Peter Anvin
2013-03-01 20:13 ` Stefan Berger
2013-03-01 20:15 ` H. Peter Anvin
2013-03-01 20:41 ` Paolo Bonzini
2013-03-01 20:04 ` Anthony Liguori
2013-03-01 20:34 ` Stefan Berger [this message]
2013-03-01 21:08 ` Anthony Liguori
2013-03-01 21:13 ` Eric Blake
2013-03-01 23:05 ` Anthony Liguori
2013-03-01 23:14 ` Eric Blake
2013-03-01 23:59 ` Anthony Liguori
2013-03-02 0:29 ` Eric Blake
2013-03-02 3:13 ` Anthony Liguori
2013-03-02 12:23 ` Paolo Bonzini
2013-03-03 21:05 ` Anthony Liguori
2013-03-04 21:57 ` Eric Blake
2013-03-04 22:24 ` Anthony Liguori
2013-03-04 22:35 ` Eric Blake
2013-03-05 4:44 ` H. Peter Anvin
2013-03-04 21:54 ` Eric Blake
2013-03-02 0:34 ` Stefan Berger
2013-03-02 3:17 ` Anthony Liguori
2013-03-02 3:34 ` Stefan Berger
2013-03-03 21:06 ` Anthony Liguori
2013-03-04 15:27 ` Corey Bryant
2013-03-04 10:29 ` Daniel P. Berrange
2013-03-04 15:55 ` Corey Bryant
2013-03-01 22:59 ` Peter Krempa
2013-03-01 23:14 ` Anthony Liguori
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