On Sun, Dec 20, 2015 at 04:49:20PM +0100, Kashyap Chamarthy wrote: > On Tue, Dec 15, 2015 at 04:42:13PM +0000, Peter Maydell wrote: > > On 15 December 2015 at 16:35, Andrew Jones <drjones@xxxxxxxxxx> wrote: > > > This is probably good for guests that happy with both. Guests that > > > need/want a specific choice will put their integer there, and then > > > we need a way to do a capabilities check before launching that guest > > > on an arbitrary host. > > > > OK, so how do we typically do that? I notice I have a 'kvm-ok' > > script on my machine which helpfully reports things like whether > > KVM is enabled, and it seems like it might be helpful to extend > > that to know a bit more about ARM hosts. But I'm guessing libvirt > > doesn't use that for its capability checking ? > > libvirt ships a tool called `virt-host-validate` that performs a bunch > of checks along with whether KVM is enabled or not in the BIOS: > > $ sudo virt-host-validate > QEMU: Checking for hardware virtualization : PASS > QEMU: Checking for device /dev/kvm : PASS > QEMU: Checking for device /dev/vhost-net : PASS > QEMU: Checking for device /dev/net/tun : PASS > LXC: Checking for Linux >= 2.6.26 : PASS > > The only ARM machine I have access to is an AArch64 one, running on it > results in: > > $ sudo virt-host-validate > QEMU: Checking for hardware virtualization : WARN (Only emulated CPUs are available, performance will be significantly limited) This check needs to be fixed to work on Arm hosts, or indeed any non-x86 hosts. It currently checks for 'svm' and 'vmx' flags in CPU. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list