From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: S3 sleep in dom0 breaks dom0<->domU wallclock
	synchronization
Date: Tue, 6 Jul 2010 04:52:45 +0100
Message-ID: <C858671D.19765%keir.fraser@eu.citrix.com>
References: <4C3261C8.4000808@goop.org>
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: <4C3261C8.4000808@goop.org>
List-Unsubscribe: <http://lists.xensource.com/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/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: Jeremy Fitzhardinge <jeremy@goop.org>, Joanna Rutkowska <joanna@invisiblethingslab.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>, Rafal Wojtczuk <rafal@invisiblethingslab.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
List-Id: xen-devel@lists.xenproject.org

On 05/07/2010 23:50, "Jeremy Fitzhardinge" <jeremy@goop.org> wrote:

>> BTW: wouldn't it be good to actually notify them? Consider e.g. DomU
>> that has some device assigned to it (say a NIC) -- if we emulated S3
>> suspend/resume for this DomU, there is a hope it would properly
>> suspend/reinitialize the NIC, wouldn't it?
>>   
> 
> I guess?  That implies some kind of PV S3 suspend and resume event to
> feed into the dom U's device model.  What does 2.6.18-xen do?

I don't think our S3 support is very compatible with PV device passthrough.
We support HVM virtual S3, and can S3-sleep HVM guests across real host S3,
but we don't have similar for PV guests.

 -- Keir