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From: Juan Quintela <quintela@redhat.com>
In-Reply-To: <20170206173306.20603-2-dgilbert@redhat.com> (David Alan
	Gilbert's message of "Mon, 6 Feb 2017 17:32:51 +0000")
References: <20170206173306.20603-1-dgilbert@redhat.com>
	<20170206173306.20603-2-dgilbert@redhat.com>
Reply-To: quintela@redhat.com
Date: Fri, 24 Feb 2017 14:10:50 +0100
Message-ID: <8737f3loo5.fsf@emacs.mitica>
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Subject: Re: [Qemu-devel] [PATCH v2 01/16] postcopy: Transmit ram size
 summary word
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To: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
Cc: qemu-devel@nongnu.org, aarcange@redhat.com

"Dr. David Alan Gilbert (git)" <dgilbert@redhat.com> wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>
> Replace the host page-size in the 'advise' command by a pagesize
> summary bitmap; if the VM is just using normal RAM then
> this will be exactly the same as before, however if they're using
> huge pages they'll be different, and thus:
>    a) Migration from/to old qemu's that don't understand huge pages
>       will fail early.
>    b) Migrations with different size RAMBlocks will also fail early.
>
> This catches it very early; earlier than the detailed per-block
> check in the next patch.
>
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Reviewed-by: Juan Quintela <quintela@redhat.com>