Re: [PATCH 01/21] qapi/migration: add cpr-luo migration mode

[Markus Armbruster <armbru@redhat.com>]

Dongli Zhang <dongli.zhang@oracle.com> writes:

> Add the cpr-luo migration mode for CPR through the Linux Live Update
> Orchestrator (LUO). Subsequent changes preserve CPR state and RAMBlock
> backing file descriptors in an LUO session across a host kernel update.
>
> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
> ---
>  qapi/migration.json | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/qapi/migration.json b/qapi/migration.json
> index 889a9b89c2..ab117c3897 100644
> --- a/qapi/migration.json
> +++ b/qapi/migration.json
> @@ -712,9 +712,18 @@
>  #     with the '-machine aux-ram-share=on' option.
>  #
>  #     (since 10.2)
> +#
> +# @cpr-luo: A CPR mode that preserves guest RAM backing file
> +#     descriptors and CPR state through the Linux Live Update
> +#     Orchestrator (LUO) across a host kernel update.
> +#
> +#     This mode requires Linux with LUO support.

Pardon my ignorant question: host or guest kernel?

> +#
> +#     (since 11.2)
>  ##
>  { 'enum': 'MigMode',
> -  'data': [ 'normal', 'cpr-reboot', 'cpr-transfer', 'cpr-exec' ] }
> +  'data': [ 'normal', 'cpr-reboot', 'cpr-transfer', 'cpr-exec',
> +            'cpr-luo' ] }
>  
>  ##
>  # @ZeroPageDetection: