Re: [libvirt] ARM KVM GICv3 Support
On Tue, Dec 15, 2015 at 04:42:13PM +0000, Peter Maydell wrote:
On 15 December 2015 at 16:35, Andrew Jones <drjones(a)redhat.com>
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)
QEMU: Checking for device /dev/vhost-net : WARN
(Load the 'vhost_net' module to improve performance of virtio networking)
QEMU: Checking for device /dev/net/tun : PASS
LXC: Checking for Linux >= 2.6.26 : PASS
$ uname -r; rpm -q libvirt-client
4.1.0-0.rc4.git1.1.fc23.aarch64
libvirt-client-1.2.14-2.fc23.aarch64
--
/kashyap