From patchwork Fri Oct 6 06:20:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 13410983 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D3D07E92FE9 for ; Fri, 6 Oct 2023 06:23:05 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qoeD5-0005Km-Rg; Fri, 06 Oct 2023 02:21:15 -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 1qoeCq-0005J4-NL for qemu-devel@nongnu.org; Fri, 06 Oct 2023 02:21:04 -0400 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qoeCo-00034L-AQ for qemu-devel@nongnu.org; Fri, 06 Oct 2023 02:21:00 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4S1ywl5QJ4z4xVV; Fri, 6 Oct 2023 17:20:55 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4S1ywj6cCQz4xS5; Fri, 6 Oct 2023 17:20:53 +1100 (AEDT) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , Zhenzhong Duan , Eric Auger , =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PULL 18/21] vfio/common: Introduce a per container device list Date: Fri, 6 Oct 2023 08:20:02 +0200 Message-ID: <20231006062005.1040296-19-clg@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231006062005.1040296-1-clg@redhat.com> References: <20231006062005.1040296-1-clg@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=cI0A=FU=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Zhenzhong Duan Several functions need to iterate over the VFIO devices attached to a given container. This is currently achieved by iterating over the groups attached to the container and then over the devices in the group. Let's introduce a per container device list that simplifies this search. Per container list is used in below functions: vfio_devices_all_dirty_tracking vfio_devices_all_device_dirty_tracking vfio_devices_all_running_and_mig_active vfio_devices_dma_logging_stop vfio_devices_dma_logging_start vfio_devices_query_dirty_bitmap This will also ease the migration of IOMMUFD by hiding the group specificity. Suggested-by: Alex Williamson Signed-off-by: Zhenzhong Duan Signed-off-by: Eric Auger Reviewed-by: Cédric Le Goater Signed-off-by: Cédric Le Goater --- include/hw/vfio/vfio-common.h | 2 + hw/vfio/common.c | 141 +++++++++++++++------------------- 2 files changed, 65 insertions(+), 78 deletions(-) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index c486bdef2adfe77e02f80559005d09426a7634bd..8ca70dd82156e25610fe96917843f334549818fe 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -98,6 +98,7 @@ typedef struct VFIOContainer { QLIST_HEAD(, VFIOGroup) group_list; QLIST_HEAD(, VFIORamDiscardListener) vrdl_list; QLIST_ENTRY(VFIOContainer) next; + QLIST_HEAD(, VFIODevice) device_list; } VFIOContainer; typedef struct VFIOGuestIOMMU { @@ -129,6 +130,7 @@ typedef struct VFIODeviceOps VFIODeviceOps; typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; + QLIST_ENTRY(VFIODevice) container_next; struct VFIOGroup *group; char *sysfsdev; char *name; diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 019da387d239cd005ab38577a68f35a013c98587..ef9dc7c74713f113a459db61aad7a017e21cf99a 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -218,7 +218,6 @@ bool vfio_device_state_is_precopy(VFIODevice *vbasedev) static bool vfio_devices_all_dirty_tracking(VFIOContainer *container) { - VFIOGroup *group; VFIODevice *vbasedev; MigrationState *ms = migrate_get_current(); @@ -227,19 +226,17 @@ static bool vfio_devices_all_dirty_tracking(VFIOContainer *container) return false; } - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - VFIOMigration *migration = vbasedev->migration; + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + VFIOMigration *migration = vbasedev->migration; - if (!migration) { - return false; - } + if (!migration) { + return false; + } - if (vbasedev->pre_copy_dirty_page_tracking == ON_OFF_AUTO_OFF && - (vfio_device_state_is_running(vbasedev) || - vfio_device_state_is_precopy(vbasedev))) { - return false; - } + if (vbasedev->pre_copy_dirty_page_tracking == ON_OFF_AUTO_OFF && + (vfio_device_state_is_running(vbasedev) || + vfio_device_state_is_precopy(vbasedev))) { + return false; } } return true; @@ -247,14 +244,11 @@ static bool vfio_devices_all_dirty_tracking(VFIOContainer *container) static bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container) { - VFIOGroup *group; VFIODevice *vbasedev; - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (!vbasedev->dirty_pages_supported) { - return false; - } + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + if (!vbasedev->dirty_pages_supported) { + return false; } } @@ -267,27 +261,24 @@ static bool vfio_devices_all_device_dirty_tracking(VFIOContainer *container) */ static bool vfio_devices_all_running_and_mig_active(VFIOContainer *container) { - VFIOGroup *group; VFIODevice *vbasedev; if (!migration_is_active(migrate_get_current())) { return false; } - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - VFIOMigration *migration = vbasedev->migration; + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + VFIOMigration *migration = vbasedev->migration; - if (!migration) { - return false; - } + if (!migration) { + return false; + } - if (vfio_device_state_is_running(vbasedev) || - vfio_device_state_is_precopy(vbasedev)) { - continue; - } else { - return false; - } + if (vfio_device_state_is_running(vbasedev) || + vfio_device_state_is_precopy(vbasedev)) { + continue; + } else { + return false; } } return true; @@ -1187,20 +1178,17 @@ static bool vfio_section_is_vfio_pci(MemoryRegionSection *section, { VFIOPCIDevice *pcidev; VFIODevice *vbasedev; - VFIOGroup *group; Object *owner; owner = memory_region_owner(section->mr); - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->type != VFIO_DEVICE_TYPE_PCI) { - continue; - } - pcidev = container_of(vbasedev, VFIOPCIDevice, vbasedev); - if (OBJECT(pcidev) == owner) { - return true; - } + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + if (vbasedev->type != VFIO_DEVICE_TYPE_PCI) { + continue; + } + pcidev = container_of(vbasedev, VFIOPCIDevice, vbasedev); + if (OBJECT(pcidev) == owner) { + return true; } } @@ -1296,24 +1284,21 @@ static void vfio_devices_dma_logging_stop(VFIOContainer *container) sizeof(uint64_t))] = {}; struct vfio_device_feature *feature = (struct vfio_device_feature *)buf; VFIODevice *vbasedev; - VFIOGroup *group; feature->argsz = sizeof(buf); feature->flags = VFIO_DEVICE_FEATURE_SET | VFIO_DEVICE_FEATURE_DMA_LOGGING_STOP; - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (!vbasedev->dirty_tracking) { - continue; - } + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + if (!vbasedev->dirty_tracking) { + continue; + } - if (ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature)) { - warn_report("%s: Failed to stop DMA logging, err %d (%s)", - vbasedev->name, -errno, strerror(errno)); - } - vbasedev->dirty_tracking = false; + if (ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature)) { + warn_report("%s: Failed to stop DMA logging, err %d (%s)", + vbasedev->name, -errno, strerror(errno)); } + vbasedev->dirty_tracking = false; } } @@ -1396,7 +1381,6 @@ static int vfio_devices_dma_logging_start(VFIOContainer *container) struct vfio_device_feature *feature; VFIODirtyRanges ranges; VFIODevice *vbasedev; - VFIOGroup *group; int ret = 0; vfio_dirty_tracking_init(container, &ranges); @@ -1406,21 +1390,19 @@ static int vfio_devices_dma_logging_start(VFIOContainer *container) return -errno; } - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - if (vbasedev->dirty_tracking) { - continue; - } + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + if (vbasedev->dirty_tracking) { + continue; + } - ret = ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature); - if (ret) { - ret = -errno; - error_report("%s: Failed to start DMA logging, err %d (%s)", - vbasedev->name, ret, strerror(errno)); - goto out; - } - vbasedev->dirty_tracking = true; + ret = ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature); + if (ret) { + ret = -errno; + error_report("%s: Failed to start DMA logging, err %d (%s)", + vbasedev->name, ret, strerror(errno)); + goto out; } + vbasedev->dirty_tracking = true; } out: @@ -1500,21 +1482,18 @@ static int vfio_devices_query_dirty_bitmap(VFIOContainer *container, hwaddr size) { VFIODevice *vbasedev; - VFIOGroup *group; int ret; - QLIST_FOREACH(group, &container->group_list, container_next) { - QLIST_FOREACH(vbasedev, &group->device_list, next) { - ret = vfio_device_dma_logging_report(vbasedev, iova, size, - vbmap->bitmap); - if (ret) { - error_report("%s: Failed to get DMA logging report, iova: " - "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx - ", err: %d (%s)", - vbasedev->name, iova, size, ret, strerror(-ret)); + QLIST_FOREACH(vbasedev, &container->device_list, container_next) { + ret = vfio_device_dma_logging_report(vbasedev, iova, size, + vbmap->bitmap); + if (ret) { + error_report("%s: Failed to get DMA logging report, iova: " + "0x%" HWADDR_PRIx ", size: 0x%" HWADDR_PRIx + ", err: %d (%s)", + vbasedev->name, iova, size, ret, strerror(-ret)); - return ret; - } + return ret; } } @@ -2648,6 +2627,7 @@ int vfio_attach_device(char *name, VFIODevice *vbasedev, int groupid = vfio_device_groupid(vbasedev, errp); VFIODevice *vbasedev_iter; VFIOGroup *group; + VFIOContainer *container; int ret; if (groupid < 0) { @@ -2671,8 +2651,12 @@ int vfio_attach_device(char *name, VFIODevice *vbasedev, ret = vfio_get_device(group, name, vbasedev, errp); if (ret) { vfio_put_group(group); + return ret; } + container = group->container; + QLIST_INSERT_HEAD(&container->device_list, vbasedev, container_next); + return ret; } @@ -2680,6 +2664,7 @@ void vfio_detach_device(VFIODevice *vbasedev) { VFIOGroup *group = vbasedev->group; + QLIST_REMOVE(vbasedev, container_next); trace_vfio_detach_device(vbasedev->name, group->groupid); vfio_put_base_device(vbasedev); vfio_put_group(group);