From patchwork Wed Oct 4 15:44:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 1843446 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=AZ709tk2; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4S0zgg4FF0z1yqD for ; Thu, 5 Oct 2023 02:51:11 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qo44r-000754-SO; Wed, 04 Oct 2023 11:46:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qo44p-00074b-Gb for qemu-devel@nongnu.org; Wed, 04 Oct 2023 11:46:19 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qo44n-0006mh-Os for qemu-devel@nongnu.org; Wed, 04 Oct 2023 11:46:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1696434377; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZsAWIbxqmygrLD13Fbk2FEGoL9KkYhdTkj/PRSK1VnM=; b=AZ709tk2PIZqOu2svJkWdVUIIH6V5m0LMo97D2fKAFw8Jt3p6EaQY3qk3MeIcsEaVWr3bm t1hZhGoL/kJcJ11Nr1WxbfJjBLGsdVGiuPtJJApq7TSaKDDamnMUSxZdLEDzNS88tfd/RM rp2HyYiGFdYlns7JaELIPW+uopy9+Ko= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-498-ESiLadZhN-26gginVc6omQ-1; Wed, 04 Oct 2023 11:46:11 -0400 X-MC-Unique: ESiLadZhN-26gginVc6omQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BAB5D95BC55; Wed, 4 Oct 2023 15:46:10 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.192.172]) by smtp.corp.redhat.com (Postfix) with ESMTP id E98D440C6EC1; Wed, 4 Oct 2023 15:46:07 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, zhenzhong.duan@intel.com, alex.williamson@redhat.com, clg@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, peterx@redhat.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, chao.p.peng@intel.com, mjrosato@linux.ibm.com, aik@ozlabs.ru Subject: [PATCH v4 14/15] vfio/common: Introduce a global VFIODevice list Date: Wed, 4 Oct 2023 17:44:01 +0200 Message-ID: <20231004154518.334760-15-eric.auger@redhat.com> In-Reply-To: <20231004154518.334760-1-eric.auger@redhat.com> References: <20231004154518.334760-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Zhenzhong Duan Some functions iterate over all the VFIODevices. This is currently achieved by iterating over all groups/devices. Let's introduce a global list of VFIODevices simplifying that scan. This will also be useful while migrating to IOMMUFD by hiding the group specificity. Signed-off-by: Eric Auger Signed-off-by: Zhenzhong Duan Suggested-by: Alex Williamson Reviewed-by: Cédric Le Goater --- include/hw/vfio/vfio-common.h | 2 ++ hw/vfio/common.c | 45 +++++++++++++++-------------------- 2 files changed, 21 insertions(+), 26 deletions(-) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index bf12e40667..54905b9dd4 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -131,6 +131,7 @@ typedef struct VFIODeviceOps VFIODeviceOps; typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; QLIST_ENTRY(VFIODevice) container_next; + QLIST_ENTRY(VFIODevice) global_next; struct VFIOGroup *group; VFIOContainer *container; char *sysfsdev; @@ -232,6 +233,7 @@ int vfio_kvm_device_del_fd(int fd, Error **errp); extern const MemoryRegionOps vfio_region_ops; typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList; +typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList; extern VFIOGroupList vfio_group_list; bool vfio_mig_active(void); diff --git a/hw/vfio/common.c b/hw/vfio/common.c index b14f04c9b0..5dd03763d2 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -48,6 +48,8 @@ VFIOGroupList vfio_group_list = QLIST_HEAD_INITIALIZER(vfio_group_list); +static VFIODeviceList vfio_device_list = + QLIST_HEAD_INITIALIZER(vfio_device_list); static QLIST_HEAD(, VFIOAddressSpace) vfio_address_spaces = QLIST_HEAD_INITIALIZER(vfio_address_spaces); @@ -94,18 +96,15 @@ static int vfio_get_dirty_bitmap(VFIOContainer *container, uint64_t iova, bool vfio_mig_active(void) { - VFIOGroup *group; VFIODevice *vbasedev; - if (QLIST_EMPTY(&vfio_group_list)) { + if (QLIST_EMPTY(&vfio_device_list)) { return false; } - QLIST_FOREACH(group, &vfio_group_list, next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->migration_blocker) { - return false; - } + QLIST_FOREACH(vbasedev, &vfio_device_list, next) { + if (vbasedev->migration_blocker) { + return false; } } return true; @@ -120,19 +119,16 @@ static Error *multiple_devices_migration_blocker; */ static bool vfio_multiple_devices_migration_is_supported(void) { - VFIOGroup *group; VFIODevice *vbasedev; unsigned int device_num = 0; bool all_support_p2p = true; - QLIST_FOREACH(group, &vfio_group_list, next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->migration) { - device_num++; + QLIST_FOREACH(vbasedev, &vfio_device_list, next) { + if (vbasedev->migration) { + device_num++; - if (!(vbasedev->migration->mig_flags & VFIO_MIGRATION_P2P)) { - all_support_p2p = false; - } + if (!(vbasedev->migration->mig_flags & VFIO_MIGRATION_P2P)) { + all_support_p2p = false; } } } @@ -1777,22 +1773,17 @@ bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info, void vfio_reset_handler(void *opaque) { - VFIOGroup *group; VFIODevice *vbasedev; - QLIST_FOREACH(group, &vfio_group_list, next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->dev->realized) { - vbasedev->ops->vfio_compute_needs_reset(vbasedev); - } + QLIST_FOREACH(vbasedev, &vfio_device_list, next) { + if (vbasedev->dev->realized) { + vbasedev->ops->vfio_compute_needs_reset(vbasedev); } } - QLIST_FOREACH(group, &vfio_group_list, next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->dev->realized && vbasedev->needs_reset) { - vbasedev->ops->vfio_hot_reset_multi(vbasedev); - } + QLIST_FOREACH(vbasedev, &vfio_device_list, next) { + if (vbasedev->dev->realized && vbasedev->needs_reset) { + vbasedev->ops->vfio_hot_reset_multi(vbasedev); } } } @@ -2657,6 +2648,7 @@ int vfio_attach_device(char *name, VFIODevice *vbasedev, container = group->container; vbasedev->container = container; QLIST_INSERT_HEAD(&container->device_list, vbasedev, container_next); + QLIST_INSERT_HEAD(&vfio_device_list, vbasedev, global_next); return ret; } @@ -2665,6 +2657,7 @@ void vfio_detach_device(VFIODevice *vbasedev) { VFIOGroup *group = vbasedev->group; + QLIST_REMOVE(vbasedev, global_next); QLIST_REMOVE(vbasedev, container_next); vbasedev->container = NULL; trace_vfio_detach_device(vbasedev->name, group->groupid);