From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 620C2C433EF for ; Wed, 9 Feb 2022 12:29:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233155AbiBIM33 (ORCPT ); Wed, 9 Feb 2022 07:29:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232839AbiBIM3F (ORCPT ); Wed, 9 Feb 2022 07:29:05 -0500 Received: from out30-133.freemail.mail.aliyun.com (out30-133.freemail.mail.aliyun.com [115.124.30.133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9E9EC05CB9E for ; Wed, 9 Feb 2022 04:29:08 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0V4.YQeC_1644409741; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V4.YQeC_1644409741) by smtp.aliyun-inc.com(127.0.0.1); Wed, 09 Feb 2022 20:29:02 +0800 From: Xuan Zhuo To: linux-kernel@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , virtualization@lists.linux-foundation.org Subject: [PATCH v4 00/14] virtio pci support VIRTIO_F_RING_RESET Date: Wed, 9 Feb 2022 20:28:47 +0800 Message-Id: <20220209122901.51790-1-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The virtio spec already supports the virtio queue reset function. This patch set is to add this function to the kernel. The relevant virtio spec information is here: https://github.com/oasis-tcs/virtio-spec/issues/124 Also regarding MMIO support for queue reset, I plan to support it after this patch is passed. Please review. Thanks. v4: 1. just the code of virtio, without virtio-net 2. Performing reset on a queue is divided into these steps: 1. reset_vq: reset one vq 2. recycle the buffer from vq by virtqueue_detach_unused_buf() 3. release the ring of the vq by vring_release_virtqueue() 4. enable_reset_vq: re-enable the reset queue 3. Simplify the parameters of enable_reset_vq() 4. add container structures for virtio_pci_common_cfg v3: 1. keep vq, irq unreleased Xuan Zhuo (14): virtio_pci: struct virtio_pci_common_cfg add queue_notify_data virtio: queue_reset: add VIRTIO_F_RING_RESET virtio_ring: queue_reset: add function vring_setup_virtqueue() virtio_ring: queue_reset: split: add __vring_init_virtqueue() virtio_ring: queue_reset: split: support enable reset queue virtio_ring: queue_reset: packed: support enable reset queue virtio_ring: queue_reset: extract the release function of the vq ring virtio_ring: queue_reset: add vring_release_virtqueue() virtio: queue_reset: struct virtio_config_ops add callbacks for queue_reset virtio_pci: queue_reset: update struct virtio_pci_common_cfg and option functions virtio_pci: queue_reset: release vq by vp_dev->vqs virtio_pci: queue_reset: setup_vq() support vring_setup_virtqueue() virtio_pci: queue_reset: vp_setup_vq() support ring_num virtio_pci: queue_reset: support VIRTIO_F_RING_RESET drivers/virtio/virtio_pci_common.c | 65 +++++++--- drivers/virtio/virtio_pci_common.h | 11 +- drivers/virtio/virtio_pci_legacy.c | 5 +- drivers/virtio/virtio_pci_modern.c | 99 ++++++++++++-- drivers/virtio/virtio_pci_modern_dev.c | 36 +++++ drivers/virtio/virtio_ring.c | 173 ++++++++++++++++++------- include/linux/virtio.h | 6 + include/linux/virtio_config.h | 13 ++ include/linux/virtio_pci_modern.h | 2 + include/linux/virtio_ring.h | 37 ++++-- include/uapi/linux/virtio_config.h | 7 +- include/uapi/linux/virtio_pci.h | 14 ++ 12 files changed, 375 insertions(+), 93 deletions(-) -- 2.31.0