Re: [PATCH v4 1/5] xen/common: introduce a new framework for save/restore of 'domain' context

[Julien Grall <julien@xxxxxxx>]

Hi,

On 21/05/2020 09:59, Paul Durrant wrote:
> To allow enlightened HVM guests (i.e. those that have PV drivers) to be
> migrated without their co-operation it will be necessary to transfer 'PV'
> state such as event channel state, grant entry state, etc.
>
> Currently there is a framework (entered via the hvm_save/load() functions)
> that allows a domain's 'HVM' (architectural) state to be transferred but
> 'PV' state is also common with pure PV guests and so this framework is not
> really suitable.
>
> This patch adds the new public header and low level implementation of a new
> common framework, entered via the domain_save/load() functions. Subsequent
> patches will introduce other parts of the framework, and code that will
> make use of it within the current version of the libxc migration stream.
>
> This patch also marks the HVM-only framework as deprecated in favour of the
> new framework.
>
> Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall