From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir@xensource.com>
Subject: Re: [PATCH 6/10] Allow vcpu to pause self
Date: Thu, 12 Jul 2007 09:01:04 +0100
Message-ID: <C2BB9E50.AB13%keir@xensource.com>
References: <C2BB9A88.AB08%keir@xensource.com>
Mime-Version: 1.0
Content-Type: text/plain;
	charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C2BB9A88.AB08%keir@xensource.com>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

On 12/7/07 08:44, "Keir Fraser" <keir@xensource.com> wrote:

> How about doing the whole suspend/resume in dom0/vcpu0 context? Why switch
> to a softirq at all? You can force dom0/vcpu0 onto cpu0 temporarily by
> wrapping the suspend/resume in a pair of calls to vcpu_set_affinity().

You may need to temporarily rewrite ->schedule_tail as well, to regain
control after the scheduling softirq.

 -- Keir