Re: [ANNOUNCE] Native Linux KVM tool

[Avi Kivity <avi@redhat.com>]

On 04/03/2011 11:51 AM, Pekka Enberg wrote:
> Hi Anthony,
>
> On Sat, Apr 2, 2011 at 11:38 PM, Anthony Liguori<anthony@codemonkey.ws>  wrote:
> >>  The goal of this tool is to provide a clean, from-scratch, lightweight
> >>  KVM host tool implementation that can boot Linux guest images (just a
> >>  hobby, won't be big and professional like QEMU) with no BIOS
> >>  dependencies and with only the minimal amount of legacy device
> >>  emulation.
> >
> >  I see you do provide 16-bit entry points for Linux.  Are you planning on
> >  paravirtualizing this within Linux to truly eliminate the BIOS dependency?
>
> No, we aren't planning that at the moment. We're trying to support
> out-of-the-box distro kernels when possible which is why we went for
> E820 emulation in the first place. The only hard requirement for
> bootung userspace is CONFIG_VIRTIO_BLK but otherwise kernel binaries
> should just work.
>
> Furthermore, as the BIOS glue is really really small, I'm not sure if
> we need to get rid of it completely. Do you have some scenario in mind
> where paravirt solution would help?

It would be a easier to support the bios than implement everything it 
provides in a different way.  SMP support, cpu hotplug, device hotplug, 
NUMA, and probably other features all rely on the bios.

-- 
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