This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Interrupts in HVM inter-domain communication

To: "Patrick F. Wilbur" <pat@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Interrupts in HVM inter-domain communication
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Thu, 28 Aug 2008 07:57:30 +0100
Delivery-date: Wed, 27 Aug 2008 23:58:13 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <f8b8b8820808271654w64c49035ob894f087ce6d214f@xxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AckI21aRlROm4HTOEd2KmwAWy6hiGQ==
Thread-topic: [Xen-devel] Interrupts in HVM inter-domain communication
User-agent: Microsoft-Entourage/
Yes, inter-domain event channels exist for this purpose. Basically a sticky bit in each domain, which the other can cause to be set. When a bit flips 0->1 that domain gets an async callback (‘interrupt’).

 -- Keir

On 28/8/08 00:54, "Patrick F. Wilbur" <pat@xxxxxxxxxxxxxx> wrote:

What are the possible methods for inter-domain communication between HVM guests?  Specifically, is there a way to use interrupts in aiding the notification of arrived inter-domain messages to applications running on HVM guests?

Xen-devel mailing list
<Prev in Thread] Current Thread [Next in Thread>