From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: John Stoffel <john@stoffel.org>, Avi Kivity <avi@qumranet.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/7] KVM: userspace interface
Date: Thu, 19 Oct 2006 21:36:40 +0100 [thread overview]
Message-ID: <1161290200.17335.112.camel@localhost.localdomain> (raw)
In-Reply-To: <4537C8B3.5050501@us.ibm.com>
Ar Iau, 2006-10-19 am 13:49 -0500, ysgrifennodd Anthony Liguori:
> ioctls are probably wrong here though. Ideally, you would want to be
> able to support an SMP guest. This means you need to have two virtual
> processors executing in kernel space. If you use ioctls, it forces you
Not really and in fact with qemu you'd want to halt a trap on the second
virtual CPU until emulation was over if only to get I/O and other
instruction ordering right. Thats not an argument that only that view
should be supported of course.
> If you used a read/write interface, you could poll for any number of
> processors and handle IO emulation in a single userspace thread (which
> seems closer to how hardware really works anyway).
Agreed.
Alan
next prev parent reply other threads:[~2006-10-19 20:34 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-19 13:45 [PATCH 0/7] KVM: Kernel-based Virtual Machine Avi Kivity
2006-10-19 13:47 ` [PATCH 1/7] KVM: userspace interface Avi Kivity
2006-10-19 14:30 ` John Stoffel
2006-10-19 14:43 ` Avi Kivity
2006-10-19 23:26 ` Greg KH
2006-10-19 14:50 ` Alan Cox
2006-10-19 14:51 ` Avi Kivity
2006-10-19 15:25 ` John Stoffel
2006-10-19 18:49 ` Anthony Liguori
2006-10-19 19:10 ` Avi Kivity
2006-10-19 19:17 ` Anthony Liguori
2006-10-20 7:36 ` Avi Kivity
2006-10-20 15:33 ` Anthony Liguori
2006-10-22 8:10 ` Avi Kivity
2006-10-19 20:36 ` Alan Cox [this message]
2006-10-19 18:46 ` Anthony Liguori
2006-10-19 19:04 ` Avi Kivity
2006-10-19 19:09 ` Anthony Liguori
2006-10-19 19:26 ` Avi Kivity
2006-10-19 19:31 ` Anthony Liguori
2006-10-19 22:15 ` Alan Cox
2006-10-20 7:42 ` Avi Kivity
2006-10-20 15:35 ` Anthony Liguori
2006-10-19 20:10 ` Andi Kleen
2006-10-19 20:14 ` Jan Engelhardt
2006-10-20 7:16 ` Avi Kivity
2006-10-21 15:50 ` Arnd Bergmann
2006-10-22 8:19 ` Avi Kivity
2006-10-21 13:37 ` Steven Rostedt
2006-10-22 8:14 ` Avi Kivity
2006-10-19 13:48 ` [PATCH 2/7] KVM: Intel virtual mode extensions definitions Avi Kivity
2006-10-19 20:19 ` Jan Engelhardt
2006-10-19 21:54 ` Alan Cox
2006-10-20 7:17 ` Avi Kivity
2006-10-21 13:48 ` Steven Rostedt
2006-10-22 8:17 ` Avi Kivity
2006-10-19 13:49 ` [PATCH 3/7] KVM: kvm data structures Avi Kivity
2006-10-19 13:53 ` [PATCH 5/7] KVM: mmu virtualization Avi Kivity
2006-10-19 20:26 ` Jan Engelhardt
2006-10-20 7:24 ` Avi Kivity
2006-10-19 13:54 ` [PATCH 6/7] KVM: x86 emulator Avi Kivity
2006-10-19 13:56 ` [PATCH 7/7] KVM: plumbing Avi Kivity
2006-10-19 13:58 ` [PATCH 0/7] KVM: Kernel-based Virtual Machine Avi Kivity
2006-10-19 16:05 ` Andi Kleen
2006-10-19 16:09 ` Avi Kivity
2006-10-19 19:02 ` Anthony Liguori
2006-10-19 19:14 ` Avi Kivity
2006-10-19 19:28 ` Anthony Liguori
2006-10-20 7:37 ` Avi Kivity
2006-10-19 17:31 ` Muli Ben-Yehuda
2006-10-19 18:00 ` Avi Kivity
2006-10-19 18:12 ` Randy Dunlap
2006-10-19 18:14 ` Avi Kivity
2006-10-19 18:30 ` Randy.Dunlap
2006-10-21 16:16 ` Arnd Bergmann
2006-10-22 8:37 ` Avi Kivity
2006-10-22 15:23 ` Arnd Bergmann
2006-10-22 16:18 ` Avi Kivity
2006-10-22 16:51 ` Arnd Bergmann
2006-10-22 17:01 ` Avi Kivity
2006-10-22 17:06 ` Arnd Bergmann
2006-10-22 17:41 ` Avi Kivity
2006-10-22 17:47 ` Arnd Bergmann
2006-10-22 17:56 ` Christoph Hellwig
2006-10-22 18:00 ` Avi Kivity
2006-10-22 18:36 ` Arnd Bergmann
2006-10-22 18:41 ` Avi Kivity
2006-10-22 18:49 ` Arnd Bergmann
2006-10-22 18:55 ` Avi Kivity
2006-10-22 22:26 ` Andi Kleen
2006-10-23 22:29 ` Jeremy Fitzhardinge
2006-10-22 20:01 ` Alan Cox
2006-10-22 20:45 ` Roland Dreier
2006-10-23 0:29 ` Anthony Liguori
2006-10-25 16:42 ` Pavel Machek
2006-10-22 19:59 ` Alan Cox
2006-10-22 22:28 ` Andi Kleen
2006-10-23 0:27 ` Roland Dreier
2006-10-23 0:39 ` Andi Kleen
2006-10-23 0:51 ` Roland Dreier
2006-10-22 17:39 ` Anthony Liguori
2006-10-22 17:53 ` Arnd Bergmann
2006-10-22 19:56 ` Alan Cox
2006-10-23 7:42 ` Avi Kivity
2006-10-24 21:38 ` kvm_create() (was Re: [PATCH 0/7] KVM: Kernel-based Virtual Machine) Andy Isaacson
2006-10-19 18:55 ` [PATCH 0/7] KVM: Kernel-based Virtual Machine Anthony Liguori
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