From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCH v3 01/24] xen: Extend DOMCTL createdomain to
 support arch configuration
Date: Mon, 23 Feb 2015 21:48:48 +0000
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To: Ian Campbell <ian.campbell@citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>, George Dunlap <george.dunlap@eu.citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, tim@xen.org, stefano.stabellini@citrix.com, Jan Beulich <jbeulich@suse.com>, xen-devel@lists.xenproject.org, Daniel De Graaf <dgdegra@tycho.nsa.gov>, Keir Fraser <keir@xen.org>
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Hi Ian,

On 23/02/2015 16:00, Ian Campbell wrote:
> On Mon, 2015-02-23 at 15:48 +0000, Andrew Cooper wrote:
>> GIC version and SPIs should absolutely be part of the migration stream.
>> They are domain architectural state.
>
> Of course, the question is where.
>
> They could be part of the Xen hvmsave blob for the GIC (i.e. along with
> the other GIC architectural state such as which interrupts are currently
> active,pending,masked etc).
>
> Or they could be part of a new migration v2 record for such things.

With the extension of the DOMCTL createdomain, this would be the best 
solution. The implementation would be cleaner.

> Or they could be part of the hvm params migration record.

And how do you restore? As we may have some default value (such as 
choosing the default GIC version), how do you know that all the 
parameters is correctly given?

Regards,

-- 
Julien Grall