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Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protoc

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation
Date: Sun, 14 Apr 2013 16:09:36 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4

Il 14/04/2013 13:59, Michael S. Tsirkin ha scritto:
> > I agree assuming guest has lots of zero pages won't work, but I think
> > you are overstating the importance of overcommit.  Let's mark the damn
> > thing as experimental, and stop making perfect the enemy of good.
> It looks like we have to decide, before merging, whether migration with
> rdma that breaks overcommit is worth it or not.  Since the author made
> it very clear he does not intend to make it work with overcommit, ever.

To me it is very much worth it.

I would like to understand if unregistration would require a protocol
change, but that's really more a curiosity than anything else.

Perhaps it would make sense to make chunk registration permanent only
after the bulk phase.  Chunks registered in the bulk phase are not


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