From: Joshua Root <qemu@root.id.au>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] International Virtualization Conference
Date: Tue, 10 Oct 2006 19:26:08 +1000 [thread overview]
Message-ID: <452B6730.4010207@root.id.au> (raw)
In-Reply-To: <200610090005.02895.rob@landley.net>
Rob Landley wrote:
> On Sunday 08 October 2006 10:36 am, Jim C. Brown wrote:
>> qemu is primarily a dynamic translator not a virtualizer.
>
> That's an implementation detail. The end result is running programs in a
> virtual environment, and qemu's system emulation has lots of virtual hardware
> it attaches to virtual busses, which it performs virtual I/O to, even
> simulating the delivery of virtual interrupts to signal completion of virtual
> DMA.
Part of the generally accepted definition of virtualization is that the
majority of guest instructions execute directly on the real CPU with no
intervention by the VMM. QEMU + qvm86 does count as virtualization if
the system spends most of its time in user mode; QEMU on its own does
not (you run code that is very different to the original binary).
- Josh
next prev parent reply other threads:[~2006-10-10 9:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-08 12:30 [Qemu-devel] International Virtualization Conference Ottavio Caruso
2006-10-08 14:36 ` Jim C. Brown
2006-10-08 15:35 ` Joshua Root
2006-10-08 16:58 ` Jamie Lokier
2006-10-08 23:35 ` Jim C. Brown
2006-10-09 4:05 ` Rob Landley
2006-10-09 12:08 ` Jim C. Brown
2006-10-10 15:48 ` Rob Landley
2006-10-10 17:18 ` Jim C. Brown
2006-10-11 2:03 ` Rob Landley
2006-10-11 2:54 ` Jim C. Brown
2006-10-10 9:26 ` Joshua Root [this message]
2006-10-10 15:54 ` Rob Landley
2006-10-10 17:23 ` Jim C. Brown
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