[Qemu-devel] Re: [PATCH 5/5] ide: fix migration in the middle of a bmdma transfer

[Paolo Bonzini]

On 06/15/2010 03:31 PM, Juan Quintela wrote:
> Signed-off-by: Juan Quintela<address@hidden>

Sorry if this has been discussed to death before (if so I must have 
missed it...).

With subsections available, what about taking advantage of the new 
protocol extension and add to the subsection info about the size of the 
subsection?

Also, with the size information, would it make sense to specify optional 
subsections that the receiver could choose to ignore?  Mandatory 
subsections are something such that round-trip A->B->A fail unless B 
understands the subsection, while optional subsections are such that A 
can provide a default.  IDE subsections would be optional, for example.

Paolo