Having looked into this a bit, it appears to be more like 9vx than QEMU  (uses segmenting capabilities), that is, unless I've forgotten how 9vx is set up.

I believe some X11 stuff also uses segment registers, as well as TLS on Linux.

I "get it". Especially that they're shooting for Native Arm.  It' be cool on mobiles for sure.

On Fri, Jun 12, 2009 at 6:04 PM, Roman V Shaposhnik <rvs@sun.com> wrote:
On Fri, 2009-06-12 at 13:04 -0700, Skip Tavakkolian wrote:
> anyone working on this?

What's so great about NaCl? Isn't it just a fancy way to start
QEmu/VirtualBox/VMWare?

Thanks,
Roman.