On 02/21/2013 07:47 AM, Peter Krempa wrote:
This patch implements support for the virtio-rng-pci device and the rng-random backend in qemu.
Two capabilities bits are added to track support for those:
QEMU_CAPS_DEVICE_VIRTIO_RNG - for the device support and QEMU_CAPS_OBJECT_RNG_RANDOM - for the backend support.
Is there ever going to be a qemu with backend support but not the device? I guess the opposite is possible though - having the device, but being built with only one backend out of a set of backends available in qemu source code. I guess keeping this as two capability bits makes sense.
qemu is invoked with these additional parameters if the device is enabled:
-object rng-random,id=rng0,filename=/test/phile (to add the backend) -device virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x4 (to add the device) ---
Notes: Version 2: - don't use different error messages for similar issues
ACK. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org