Re: [Qemu-devel] merging kqemu into mainline kernel?

[Daniel P. Berrange]

On Thu, Aug 16, 2007 at 05:01:42PM +0200, Jernej Simon?i? wrote:
> On Thursday, August 16, 2007, 15:49:14, Paul Brook wrote:
> 
> > Mainly because the kernel already has one perfectly good virtualization
> > interface.
> 
> Weren't both Xen and lguest recently merged to the (upcoming) 2.6.23
> kernel?

They're different to this scenario.  Xen & lguest are Host <-> Guest  ABIs,
and both ultimately use the common paravirt_ops API inside the kernel.

kqemu & kvm are Host Kernel <-> Host Userspace APIs, which are completely
different, sharing no commonality in their APIs.  kqemu stands very little
chance getting merged unless it can share its userspace API model with KVM.
This would have the added advantage that the QEMU binary would only need
to talk one protocol to the kernel too, removing the need for the fork
between plain QEMU & KVM-ified QEMU.

Dan.
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