From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: Re: [PATCH v7 kernel 3/5] virtio-balloon: implementation of VIRTIO_BALLOON_F_CHUNK_TRANSFER Date: Sat, 11 Mar 2017 06:09:47 -0800 Message-ID: <20170311140946.GA1860@bombadil.infradead.org> References: <1488519630-89058-1-git-send-email-wei.w.wang@intel.com> <1488519630-89058-4-git-send-email-wei.w.wang@intel.com> <20170309141411.GZ16328@bombadil.infradead.org> <58C28FF8.5040403@intel.com> <20170310175349-mutt-send-email-mst@kernel.org> <20170310171143.GA16328@bombadil.infradead.org> <58C3E6A3.1000000@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Michael S. Tsirkin" , virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, qemu-devel@nongnu.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org, Liang Li , Paolo Bonzini , Cornelia Huck , Amit Shah , Dave Hansen , Andrea Arcangeli , David Hildenbrand , Liang Li To: Wei Wang Return-path: Content-Disposition: inline In-Reply-To: <58C3E6A3.1000000@intel.com> Sender: owner-linux-mm@kvack.org List-Id: kvm.vger.kernel.org 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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org