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

To: "Patrick F. Wilbur" <pat@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Thu, 28 Aug 2008 07:57:30 +0100
Cc:
Delivery-date: Wed, 27 Aug 2008 23:58:13 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Thread-index: AckI21aRlROm4HTOEd2KmwAWy6hiGQ==
Thread-topic: [Xen-devel] Interrupts in HVM inter-domain communication

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?

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References:
- [Xen-devel] Interrupts in HVM inter-domain communication
  - From: Patrick F. Wilbur

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