From patchwork Fri Jul 5 11:01:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 11033683 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31824112C for ; Sat, 6 Jul 2019 11:19:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 24EE8287F9 for ; Sat, 6 Jul 2019 11:19:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 18493289E5; Sat, 6 Jul 2019 11:19:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=2.0 tests=BAYES_00,DATE_IN_PAST_24_48, MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AFAA3287F9 for ; Sat, 6 Jul 2019 11:19:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726607AbfGFLTe (ORCPT ); Sat, 6 Jul 2019 07:19:34 -0400 Received: from mga12.intel.com ([192.55.52.136]:5514 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726910AbfGFLTe (ORCPT ); Sat, 6 Jul 2019 07:19:34 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Jul 2019 04:19:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.63,458,1557212400"; d="scan'208";a="363355053" Received: from yiliu-dev.bj.intel.com ([10.238.156.139]) by fmsmga005.fm.intel.com with ESMTP; 06 Jul 2019 04:19:31 -0700 From: Liu Yi L To: qemu-devel@nongnu.org, mst@redhat.com, pbonzini@redhat.com, alex.williamson@redhat.com, peterx@redhat.com Cc: eric.auger@redhat.com, david@gibson.dropbear.id.au, tianyu.lan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, jun.j.tian@intel.com, yi.y.sun@intel.com, kvm@vger.kernel.org, Jacob Pan , Yi Sun Subject: [RFC v1 15/18] vfio/pci: adds support for PASID-based iotlb flush Date: Fri, 5 Jul 2019 19:01:48 +0800 Message-Id: <1562324511-2910-16-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1562324511-2910-1-git-send-email-yi.l.liu@intel.com> References: <1562324511-2910-1-git-send-email-yi.l.liu@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for propagating guest PASID-based iotlb flush to host via vfio container ioctl. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Eric Auger Cc: Yi Sun Cc: David Gibson Signed-off-by: Liu Yi L --- hw/vfio/pci.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 892b46c..d8b84a5 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2796,11 +2796,34 @@ static void vfio_pci_device_unbind_gpasid(PCIBus *bus, int32_t devfn, g_free(bind); } +static void vfio_pci_device_flush_pasid_iotlb(PCIBus *bus, int32_t devfn, + struct iommu_cache_invalidate_info *info) +{ + PCIDevice *pdev = bus->devices[devfn]; + VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev); + VFIOContainer *container = vdev->vbasedev.group->container; + struct vfio_iommu_type1_cache_invalidate cache_inv; + unsigned long argsz; + + argsz = sizeof(cache_inv); + cache_inv.argsz = argsz; + cache_inv.info = *info; + cache_inv.flags = 0x0; + + rcu_read_lock(); + if (ioctl(container->fd, VFIO_IOMMU_CACHE_INVALIDATE, &cache_inv) != 0) { + error_report("vfio_pci_device_flush_pasid_iotlb:" + " cache invalidation failed, contanier: %p", container); + } + rcu_read_unlock(); +} + static PCIPASIDOps vfio_pci_pasid_ops = { .alloc_pasid = vfio_pci_device_request_pasid_alloc, .free_pasid = vfio_pci_device_request_pasid_free, .bind_gpasid = vfio_pci_device_bind_gpasid, .unbind_gpasid = vfio_pci_device_unbind_gpasid, + .flush_pasid_iotlb = vfio_pci_device_flush_pasid_iotlb, }; static void vfio_realize(PCIDevice *pdev, Error **errp)