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Re: [Xen-devel] [PATCH 09/14]: libxenlight, domain resume

To: Vincent Hanquez <vincent.hanquez@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 09/14]: libxenlight, domain resume
From: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
Date: Tue, 01 Dec 2009 09:20:56 -0500
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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I know little of hvm. I believe the *right* approach is to parse an elf note of the guest kernel. The hvm "kernel" is the hvmloader, so that would render hvm non-cooperative. The caller will have to provide the kernel path though, since we forget about it.

Andres

Vincent Hanquez wrote:
On Mon, Nov 30, 2009 at 07:15:16PM +0000, Andres Lagar-Cavilla wrote:
Added libxenlight implementation for resume domain.
This brings back a domain from the shutdown state
after save, enabling checkpointing.

(I haven't looks at resume stuff for age ..)

I think this only works if the domain is cooperative, if it isn't you need to a
callback in the middle of the calls to do devices related unplugging/plugging.

If that still true, I would prefer to have a "if (pv)" around the code since pv are always suppose to be cooperative



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