From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sasha Levin <levinsasha928@gmail.com>
Subject: Re: [GIT PULL] Native Linux KVM tool for 3.1
Date: Mon, 25 Jul 2011 10:50:01 +0300
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Cc: Pekka Enberg <penberg@kernel.org>, torvalds@linux-foundation.org,
	mingo@elte.hu, avi@redhat.com, akpm@linux-foundation.org,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	gorcunov@gmail.com, asias.hejun@gmail.com, prasadjoshi124@gmail.com
To: Jan Kiszka <jan.kiszka@web.de>
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On Mon, 2011-07-25 at 01:12 +0200, Jan Kiszka wrote:
> On 2011-07-24 22:37, Pekka Enberg wrote:
> > Hi Linus,
> >=20
> > Please consider pulling from
> >=20
> >   ssh://master.kernel.org/pub/scm/linux/kernel/git/penberg/linux.gi=
t
> > kvm-tool-for-linus
> >=20
> > to merge the Native Linux KVM tool to Linux 3.1.
> >=20
> > [ The changes to 9p headers were already merged but show up in the =
pull
> > request. ]
> >=20
> > The goal of this tool is to provide a clean, from-scratch, lightwei=
ght
> > KVM host
> > tool implementation that can boot Linux guest images with no BIOS
> > dependencies
> > and with only the minimal amount of legacy device emulation. The pr=
imary
> > focus
> > of the tool is to Linux but there are already people on working on
> > supporting
> > GRUB and other operating systems.
> >=20
> > We want the tool to be part of Linux kernel source tree because we
> > believe that
> > =A1perf=A2 clearly showed the benefits of a single repository for b=
oth
> > kernel and
> > userspace components. See Ingo Molnar=A2s email that started the pr=
oject for
> > details:
> >=20
> >   http://thread.gmane.org/gmane.linux.kernel/962051/focus=3D962620
>=20
> I've read several times now that developing in a single tree leads to
> better results. Can you provide some example from the QEMU/KVM projec=
ts
> where the split is preventing innovation, optimizations, or some othe=
r
> kind of progress?
>=20

Anthony had a talk on last years KVM forum regarding the QEMU threading
model (slide:
http://www.linux-kvm.org/wiki/images/7/70/2010-forum-threading-qemu.pdf=
) .

It was suggested that the KVM part of QEMU is having a hard time
achieving the ideal threading model due to its need to support TCG -
something which has nothing to do with KVM itself.


--=20

Sasha.