Re: [Xen-devel] [PATCH 0 of 3] Support for VM generation ID save/restore and migrate

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Dec 16, 2011 at 11:47:26AM +0000, Paul Durrant wrote:
> This patch series adds support for preservation of the VM generation ID buffer
> address in xenstore across save/restore and migrate, and also code to 
> increment
> the value in all cases except for migration.
>

Sorry for a stupid question, but what's the usecase for this 'generation ID' ?

-- Pasi

> The first patch modifies creation of the hvmloader key in xenstore and adds
> creation of a new read/write hvmloader/generation-id-addr key.
> The second patch changes hvmloader to use the new key (as opposed to the old
> data/generation-id key).
> The third patch adds the infrastructure to save and restore the VM generation 
> ID
> address in xenstore and the code to increment the value.
> 
> 
> 
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