Re: [Xen-devel] synchronization in hypervisor

To:	胡少龙 <sunofblack@xxxxxxxx>
Subject:	Re: [Xen-devel] synchronization in hypervisor
From:	George Dunlap <dunlapg@xxxxxxxxx>
Date:	Mon, 2 Aug 2010 10:44:13 +0100
Cc:	xen-devel@xxxxxxxxxxxxxxxxxxx
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What's the problem you're trying to solve?

If you just want to synchronize between VMs, there are a number of ways to solve it without adding hypercalls:
* Share a memory page, and let the two VMs syncronize directly, without needing to use the hypervisor
* Calling SCHEDOP_block on one VM, and then sending an event channel from another VM
* Have a VM pause itself, and have another VM un-pause it

-George

On Sun, Aug 1, 2010 at 2:28 AM, 胡少龙 <sunofblack@xxxxxxxx> wrote:

Hi,

I want to add two hypercalls, and to synchronize between them, which is, first wait in one hypercall, and up it in another, is there a synchronization mechanism i can use in xen hypervisor?which part of code can i reference?Thanks.

Shawn Hu

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Re: [Xen-devel] synchronization in hypervisor