Re: [libvirt] [Xen-devel] [PATCH LIBVIRT] libxl: Recognise ARM architectures
On Fri, Feb 28, 2014 at 02:12:30AM +0000, Ian Campbell wrote:
On Wed, 2014-02-26 at 15:01 +0000, Daniel P. Berrange wrote:
> Yep, if ARM has a PV console, then we'd need to add tiny bit to the XML
> to allow us to configure that explicitly, similar to how we do for KVM's
> virtio-console support.
Do you mean I need to add something to the XML config snippet, or I need
to add some special handling in the XML parser/consumer?
I've grepped around the virtio-console stuff and I'm none the wiser.
Opps, yes, I should have explained this better, since our docs here are
about as clear as mud.
With traditional x86 paravirt Xen, we just have the plain paravirt console
devices
<console type='pty'>
<target type='xen'/>
</console>
With x86 fullvirt Xen/KVM/QEMU, the console type just defaults to being
a serial port so you would usually just add
<serial type='pty'>
</serial>
and then libvirt would automatically add a <console> with
<console type='pty'>
<target type='serial'/>
</console>
With x86 fullvirt KVM, we also have support for virtio which is
done using
<console type='pty'>
<target type='virtio'/>
</console>
So actually this leads me to ask what kind of console Arm fullvirt Xen
guests actually have ? If they just use the traditional Xen paravirt
console, then we just need to make sure that this works for them by
default:
<console type='pty'>
<target type='xen'/>
</console>
If there's a different type of console device that's not related to
the Xen paravirt console device, then we'd need to invent a new
<target type='xxx'/> value for Arm.
Regards,
Daniel
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