From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41301) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVH3A-0005fz-Fp for qemu-devel@nongnu.org; Wed, 12 Jul 2017 08:47:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dVH37-0003NF-7w for qemu-devel@nongnu.org; Wed, 12 Jul 2017 08:47:28 -0400 Received: from mga06.intel.com ([134.134.136.31]:42654) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dVH36-0003Lp-Va for qemu-devel@nongnu.org; Wed, 12 Jul 2017 08:47:25 -0400 From: Wei Wang Date: Wed, 12 Jul 2017 20:40:13 +0800 Message-Id: <1499863221-16206-1-git-send-email-wei.w.wang@intel.com> Subject: [Qemu-devel] [PATCH v12 0/8] Virtio-balloon Enhancement List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: linux-kernel@vger.kernel.org, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, linux-mm@kvack.org, mst@redhat.com, david@redhat.com, cornelia.huck@de.ibm.com, akpm@linux-foundation.org, mgorman@techsingularity.net, aarcange@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, wei.w.wang@intel.com, liliang.opensource@gmail.com Cc: virtio-dev@lists.oasis-open.org, yang.zhang.wz@gmail.com, quan.xu@aliyun.com This patch series enhances the existing virtio-balloon with the following new features: 1) fast ballooning: transfer ballooned pages between the guest and host in chunks using sgs, instead of one by one; and 2) cmdq: a new virtqueue to send commands between the device and driver. Currently, it supports commands to report memory stats (replace the old statq mechanism) and report guest unused pages. Change Log: v11->v12: 1) xbitmap: use the xbitmap from Matthew Wilcox to record ballooned pages. 2) virtio-ring: enable the driver to build up a desc chain using vring desc. 3) virtio-ring: Add locking to the existing START_USE() and END_USE() macro to lock/unlock the vq when a vq operation starts/ends. 4) virtio-ring: add virtqueue_kick_sync() and virtqueue_kick_async() 5) virtio-balloon: describe chunks of ballooned pages and free pages blocks directly using one or more chains of desc from the vq. v10->v11: 1) virtio_balloon: use vring_desc to describe a chunk; 2) virtio_ring: support to add an indirect desc table to virtqueue; 3) virtio_balloon: use cmdq to report guest memory statistics. v9->v10: 1) mm: put report_unused_page_block() under CONFIG_VIRTIO_BALLOON; 2) virtio-balloon: add virtballoon_validate(); 3) virtio-balloon: msg format change; 4) virtio-balloon: move miscq handling to a task on system_freezable_wq; 5) virtio-balloon: code cleanup. v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler function to get the free page block. v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4) patch re-org Liang Li (1): virtio-balloon: deflate via a page list Matthew Wilcox (1): Introduce xbitmap Wei Wang (6): virtio-balloon: coding format cleanup xbitmap: add xb_find_next_bit() and xb_zero() virtio-balloon: VIRTIO_BALLOON_F_SG mm: support reporting free page blocks mm: export symbol of next_zone and first_online_pgdat virtio-balloon: VIRTIO_BALLOON_F_CMD_VQ drivers/virtio/virtio_balloon.c | 414 ++++++++++++++++++++++++++++++++---- drivers/virtio/virtio_ring.c | 224 +++++++++++++++++-- include/linux/mm.h | 5 + include/linux/radix-tree.h | 2 + include/linux/virtio.h | 22 ++ include/linux/xbitmap.h | 53 +++++ include/uapi/linux/virtio_balloon.h | 11 + lib/radix-tree.c | 164 +++++++++++++- mm/mmzone.c | 2 + mm/page_alloc.c | 96 +++++++++ 10 files changed, 926 insertions(+), 67 deletions(-) create mode 100644 include/linux/xbitmap.h -- 2.7.4