From: Jeremy Fitzhardinge <jeremy@goop.org>
To: tgh <wwwwww4187@sina.com.cn>
Cc: Jeremy Fitzhardinge <jeremy@xensource.com>,
Xen-devel <xen-devel@lists.xensource.com>,
Andi Kleen <ak@suse.de>, lkml <linux-kernel@vger.kernel.org>,
Chris Wright <chrisw@sous-sol.org>,
Andrew Morton <akpm@linux-foundation.com>
Subject: Re: [Xen-devel] [patch 30/44] xen: Add support for preemption
Date: Tue, 30 Oct 2007 10:25:35 -0700 [thread overview]
Message-ID: <4727690F.4030502@goop.org> (raw)
In-Reply-To: <4726F51C.4030709@sina.com.cn>
tgh wrote:
> hi
> I am using xen,and I am curious about whether Xen support the preempt
> scheduler for the VMs or not
> could the VM be prempted by xen to scheduler another VM?
>
Yes, that's the normal mode of operation. The hypervisor will timeslice
multiple vcpus onto a single vcpu.
This patch doesn't relate to that; it's whether a Xen Linux guest's
kernel can be preempted to reschedule processes while running under Xen.
The normal xen-unstable or vendor Xen kernels don't support this, but
the mainline kernel with paravirt_ops/xen support does.
J
next prev parent reply other threads:[~2007-10-30 17:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070716231536.937393000@xensource.com>
[not found] ` <20070716232912.409821000@xensource.com>
2007-07-17 0:41 ` [Xen-devel] [patch 03/44] usermodehelper: split setup from execution Rusty Russell
2007-07-17 0:57 ` Jeremy Fitzhardinge
[not found] ` <20070716232914.029797000@xensource.com>
2007-07-17 0:45 ` [Xen-devel] [patch 17/44] Add nosegneg capability to the vsyscall page notes Rusty Russell
2007-07-17 1:04 ` Jeremy Fitzhardinge
[not found] ` <20070716232916.472694000@xensource.com>
2007-07-17 1:07 ` [patch 37/44] xen: add virtual network device driver Jeff Garzik
2007-07-17 8:45 ` Stephen Hemminger
2007-07-17 14:28 ` Jeremy Fitzhardinge
2007-07-17 23:45 ` Rusty Russell
2007-07-18 0:40 ` Jeremy Fitzhardinge
[not found] ` <20070716232915.672717000@xensource.com>
2007-10-30 9:10 ` [Xen-devel] [patch 30/44] xen: Add support for preemption tgh
2007-10-30 17:25 ` Jeremy Fitzhardinge [this message]
2007-10-31 1:23 ` tgh
2007-10-31 1:38 ` Jeremy Fitzhardinge
2007-10-31 6:11 ` tgh
2007-10-31 15:07 ` Jeremy Fitzhardinge
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