From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <jia.guo@intel.com> Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 15A5C5F19 for <dev@dpdk.org>; Sun, 30 Sep 2018 16:12:41 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Sep 2018 07:12:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,324,1534834800"; d="scan'208";a="261661848" Received: from jeffguo-s2600wt2.sh.intel.com (HELO localhost.localdomain) ([10.67.110.10]) by orsmga005.jf.intel.com with ESMTP; 30 Sep 2018 07:12:36 -0700 From: Jeff Guo <jia.guo@intel.com> To: stephen@networkplumber.org, bruce.richardson@intel.com, ferruh.yigit@intel.com, konstantin.ananyev@intel.com, gaetan.rivet@6wind.com, jingjing.wu@intel.com, thomas@monjalon.net, motih@mellanox.com, matan@mellanox.com, harry.van.haaren@intel.com, qi.z.zhang@intel.com, shaopeng.he@intel.com, bernard.iremonger@intel.com, arybchenko@solarflare.com, anatoly.burakov@intel.com Cc: jblunck@infradead.org, shreyansh.jain@nxp.com, dev@dpdk.org, jia.guo@intel.com, helin.zhang@intel.com Date: Sun, 30 Sep 2018 22:16:24 +0800 Message-Id: <1538316988-128382-1-git-send-email-jia.guo@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534503091-31910-1-git-send-email-jia.guo@intel.com> References: <1534503091-31910-1-git-send-email-jia.guo@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v2 0/4] Enable hotplug in vfio X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Sun, 30 Sep 2018 14:12:42 -0000 As we may know that the process of hotplug is different between igb_uio and vfio. For igb_uio, it could use uevent notification and memory failure handle mechanism for hot-unplug. But for vfio, when device is be hot-unplugged, the uevent can not be detected immediately, because of the vfio kernel module will use a special mechanism to guaranty the pci device would not be deleted until the user space release the resources, so it will use another event “req notifier” at first to notify user space to release resources for hotplug. This patch will add a new interrupt type of req notifier in eal interrupt, and add the new interrupt handler in pci device to handle the req device event. When the req notifier be detected, it can trigger the device event callback process to process for hot-unplug. With this mechanism, hotplug could be enable in vfio. patchset history: v2->v1: change the rte_dev_event_callback_prcess from internal to external api for bus or app usage. change some code logic. Jeff Guo (4): eal: add a new req notifier to eal interrupt eal: modify device event callback process func pci: add req handler field to generic pci device vfio: enable vfio hotplug by req notifier handler app/test-pmd/testpmd.c | 4 +- drivers/bus/pci/linux/pci_vfio.c | 95 ++++++++++++++++++++++ drivers/bus/pci/pci_common.c | 10 +++ drivers/bus/pci/rte_bus_pci.h | 1 + lib/librte_eal/bsdapp/eal/eal_dev.c | 8 ++ lib/librte_eal/common/eal_common_dev.c | 5 +- lib/librte_eal/common/eal_private.h | 12 --- lib/librte_eal/common/include/rte_dev.h | 18 +++- lib/librte_eal/common/include/rte_eal_interrupts.h | 1 + lib/librte_eal/linuxapp/eal/eal_dev.c | 2 +- lib/librte_eal/linuxapp/eal/eal_interrupts.c | 71 ++++++++++++++++ lib/librte_eal/rte_eal_version.map | 1 + 12 files changed, 210 insertions(+), 18 deletions(-) -- 2.7.4