Re: [PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER

From: Matthew Wilcox
Date: Sat Mar 11 2017 - 09:13:08 EST

On Sat, Mar 11, 2017 at 07:59:31PM +0800, Wei Wang wrote:
> I'm thinking what if the guest needs to transfer these much physically
> continuous
> memory to host: 1GB+2MB+64KB+32KB+16KB+4KB.
> Is it going to use Six 64-bit chunks? Would it be simpler if we just
> use the 128-bit chunk format (we can drop the previous normal 64-bit
> format)?

Is that a likely thing for the guest to need to do though? Freeing a
1GB page is much more liikely, IMO.