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Re: [Xen-devel] HVM resumable with -c flag?

To: "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] HVM resumable with -c flag?
From: "Mike Sun" <msun@xxxxxxxxxx>
Date: Tue, 16 Sep 2008 15:30:54 -0400
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, John Levon <levon@xxxxxxxxxxxxxxxxx>
Delivery-date: Tue, 16 Sep 2008 12:31:17 -0700
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Thanks Keir.  It is the qemu-dm.  Hmm, not my dilemma is whether it'd
be a fairly easy thing to incorporate the newer qemu-dm into a 3.1.x
branch...  I've made some major changes to the shadow page table code
for my work and would rather not try and merge them into 3.2.x if I
don't have to at this point.


On Sat, Sep 13, 2008 at 3:09 AM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx> wrote:
> On 13/9/08 03:52, "John Levon" <levon@xxxxxxxxxxxxxxxxx> wrote:
>> On Fri, Sep 12, 2008 at 04:42:22PM +0100, Keir Fraser wrote:
>>> On 12/9/08 16:33, "Mike Sun" <msun@xxxxxxxxxx> wrote:
>>>> Sorry if this is a stupid question, but are you saying that all HVM
>>>> guests are now resumable and there no longer needs to be any check for
>>>> that as was done by Brendan Cully's earlier patch requests?
>>> Correct. All HVM PV drivers must support suspend cancellation (i.e.,
>>> resume). And without PV drivers, resume is as simple as just continuing
>>> execution of the guest from where it left off!
>> Uh, when was this requirement introduced?
> Since guest resume was supported by hypervisor and tools. We've never
> supported resume of HVM guests with 'uncooperative' PV drivers installed.
>  -- Keir

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