Re: [PATCH/RFC 7/9] Virtual network guest device driver

Nakajima, Jun
2007-05-22T22:56:34Z

Dor Laor wrote:
> > > If you don't care about full virtualization kvm is the wrong
project for
> > > you. You might want to take a look at lguest.
> >
> > Ah, I had not realized that KVM was purely a full-virt environment
> > with no real use for PV-only users. I'll move on. Thanks for the
tip!
> > ron
>
> Don't quit so soon on us.
> KVM has already PV kernel capabilities (in Ingo Molnar's tree) and has
> network and block PV drivers.
>
> We do plan on supporting/improving the PV kernel capabilities. The
near
> future change is direct guest paging.
> Although all new x86 cpus now ship with hardware support, software PV
> can always find spots for acceleration.

BTW, I'm presenting this at OLS:
http://www.linuxsymposium.org/2007/view_abstract.php?content_key=192

This uses direct paging mode today.

>
> Regarding PV drivers, our initial approach was try not to invent the
> wheel and implement the PV discovery using pci. For full-virt OSs,
> especially windows it was simpler. Now that more platforms might be
kvm
> based, I agree we should switch to a generic solution.
> Dor.
>

Jun
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Intel Open Source Technology Center