Re: [PATCH v5 15/23] migration/multifd: Allow receiving pages without packets

[Peter Xu]

On Wed, Feb 28, 2024 at 12:21:19PM -0300, Fabiano Rosas wrote:
> Currently multifd does not need to have knowledge of pages on the
> receiving side because all the information needed is within the
> packets that come in the stream.
> 
> We're about to add support to mapped-ram migration, which cannot use
> packets because it expects the ramblock section in the migration file
> to contain only the guest pages data.
> 
> Add a data structure to transfer pages between the ram migration code
> and the multifd receiving threads.
> 
> We don't want to reuse MultiFDPages_t for two reasons:
> 
> a) multifd threads don't really need to know about the data they're
>    receiving.
> 
> b) the receiving side has to be stopped to load the pages, which means
>    we can experiment with larger granularities than page size when
>    transferring data.
> 
> Signed-off-by: Fabiano Rosas <farosas@suse.de>

Reviewed-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu