Re: [Qemu-devel] [PATCH kernel v5 0/5] Extend virtio-balloon for fast (de)inflating & fast live migration

From: Dave Hansen
Date: Thu Dec 08 2016 - 23:53:06 EST

On 12/08/2016 08:45 PM, Li, Liang Z wrote:
> What's the conclusion of your discussion? It seems you want some
> statistic before deciding whether to ripping the bitmap from the
> ABI, am I right?

I think Andrea and David feel pretty strongly that we should remove the
bitmap, unless we have some data to support keeping it. I don't feel as
strongly about it, but I think their critique of it is pretty valid. I
think the consensus is that the bitmap needs to go.

The only real question IMNHO is whether we should do a power-of-2 or a
length. But, if we have 12 bits, then the argument for doing length is
pretty strong. We don't need anywhere near 12 bits if doing power-of-2.