Re: [PATCH 3/5] migration: Disallow xbzrle with postcopy

[Peter Xu]

On Thu, Sep 22, 2022 at 04:56:21PM +0100, Dr. David Alan Gilbert wrote:
> * Peter Xu (peterx@redhat.com) wrote:
> > It's not supported since the 1st day, as ram_load_postcopy does not handle
> > RAM_SAVE_FLAG_XBZRLE.  Mark it disabled explicitly.
> 
> We've already got a check in ram_save_page:
> 
>     if (rs->xbzrle_enabled && !migration_in_postcopy()) {
>         pages = save_xbzrle_page(rs, &p, current_addr, block,
>                                  offset);
> 
> so that's supposed to allow you to enable xbzrle with postcopy and take
> advantage of xbzrle during the precopy phase.

Ah!  Makes sense.  I'll drop this one.

-- 
Peter Xu