From patchwork Fri Nov 24 17:14:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468039 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 F2BADC61D97 for ; Fri, 24 Nov 2023 17:17:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6ZlM-0004pT-9A; Fri, 24 Nov 2023 12:14:44 -0500 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 1r6ZlK-0004of-Gq for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:42 -0500 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 1r6ZlI-0007SL-JT for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846080; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=JXCH/z44fCfzIXYUpuGN4qdD+G+/rDHtJEGJFxXKKX8=; b=fMJ1I6TIy8UBi9RCv8jsIcN9pbjhS0+HAHhfvjqeUSipuIrNF6OFXEAGJjyAL2C37tNAA1 mUpOu7IIarIxCyJbPglVi1QmixT6+o+WH8QqVWcZaDWklfqnBbe4dT3k8Nu5Dr3IbYhngd 4MF948zxMLd8rLBarGuRuHb9XB+rXyY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-444-2G8XsFVRP12FdDCMhkYjEg-1; Fri, 24 Nov 2023 12:14:36 -0500 X-MC-Unique: 2G8XsFVRP12FdDCMhkYjEg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 02C5A811E8D; Fri, 24 Nov 2023 17:14:36 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id 48FBE40C6EBD; Fri, 24 Nov 2023 17:14:34 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 01/13] vdpa: add VhostVDPAShared Date: Fri, 24 Nov 2023 18:14:18 +0100 Message-Id: <20231124171430.2964464-2-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 It will hold properties shared among all vhost_vdpa instances associated with of the same device. For example, we just need one iova_tree or one memory listener for the entire device. Next patches will register the vhost_vdpa memory listener at the beginning of the VM migration at the destination. This enables QEMU to map the memory to the device before stopping the VM at the source, instead of doing while both source and destination are stopped, thus minimizing the downtime. However, the destination QEMU is unaware of which vhost_vdpa struct will register its memory_listener. If the source guest has CVQ enabled, it will be the one associated with the CVQ. Otherwise, it will be the first one. Save the memory operations related members in a common place rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 5 +++++ net/vhost-vdpa.c | 24 ++++++++++++++++++++++-- 2 files changed, 27 insertions(+), 2 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 5407d54fd7..eb1a56d75a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -30,6 +30,10 @@ typedef struct VhostVDPAHostNotifier { void *addr; } VhostVDPAHostNotifier; +/* Info shared by all vhost_vdpa device models */ +typedef struct vhost_vdpa_shared { +} VhostVDPAShared; + typedef struct vhost_vdpa { int device_fd; int index; @@ -46,6 +50,7 @@ typedef struct vhost_vdpa { bool suspended; /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + VhostVDPAShared *shared; GPtrArray *shadow_vqs; const VhostShadowVirtqueueOps *shadow_vq_ops; void *shadow_vq_ops_opaque; diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index d0614d7954..8b661b9e6d 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -240,6 +240,10 @@ static void vhost_vdpa_cleanup(NetClientState *nc) qemu_close(s->vhost_vdpa.device_fd); s->vhost_vdpa.device_fd = -1; } + if (s->vhost_vdpa.index != 0) { + return; + } + g_free(s->vhost_vdpa.shared); } /** Dummy SetSteeringEBPF to support RSS for vhost-vdpa backend */ @@ -1661,6 +1665,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, bool svq, struct vhost_vdpa_iova_range iova_range, uint64_t features, + VhostVDPAShared *shared, Error **errp) { NetClientState *nc = NULL; @@ -1696,6 +1701,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, if (queue_pair_index == 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker); + s->vhost_vdpa.shared = g_new0(VhostVDPAShared, 1); } else if (!is_datapath) { s->cvq_cmd_out_buffer = mmap(NULL, vhost_vdpa_net_cvq_cmd_page_len(), PROT_READ | PROT_WRITE, @@ -1708,11 +1714,16 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, s->vhost_vdpa.shadow_vq_ops_opaque = s; s->cvq_isolated = cvq_isolated; } + if (queue_pair_index != 0) { + s->vhost_vdpa.shared = shared; + } + ret = vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, queue_pair_index, nvqs); if (ret) { qemu_del_net_client(nc); return NULL; } + return nc; } @@ -1824,17 +1835,26 @@ int net_init_vhost_vdpa(const Netdev *netdev, const char *name, ncs = g_malloc0(sizeof(*ncs) * queue_pairs); for (i = 0; i < queue_pairs; i++) { + VhostVDPAShared *shared = NULL; + + if (i) { + shared = DO_UPCAST(VhostVDPAState, nc, ncs[0])->vhost_vdpa.shared; + } ncs[i] = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd, i, 2, true, opts->x_svq, - iova_range, features, errp); + iova_range, features, shared, errp); if (!ncs[i]) goto err; } if (has_cvq) { + VhostVDPAState *s0 = DO_UPCAST(VhostVDPAState, nc, ncs[0]); + VhostVDPAShared *shared = s0->vhost_vdpa.shared; + nc = net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd, i, 1, false, - opts->x_svq, iova_range, features, errp); + opts->x_svq, iova_range, features, shared, + errp); if (!nc) goto err; } From patchwork Fri Nov 24 17:14:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468037 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 C8CC8C61D97 for ; Fri, 24 Nov 2023 17:16:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6ZlM-0004pV-BC; Fri, 24 Nov 2023 12:14:44 -0500 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 1r6ZlL-0004p7-Gm for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:43 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r6ZlI-0007SI-HB for qemu-devel@nongnu.org; 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Fri, 24 Nov 2023 17:14:37 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3FD3E40C6EBB; Fri, 24 Nov 2023 17:14:36 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 02/13] vdpa: move iova tree to the shared struct Date: Fri, 24 Nov 2023 18:14:19 +0100 Message-Id: <20231124171430.2964464-3-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iova tree to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 4 +-- hw/virtio/vhost-vdpa.c | 19 ++++++------ net/vhost-vdpa.c | 54 +++++++++++++++------------------- 3 files changed, 35 insertions(+), 42 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index eb1a56d75a..ac036055d3 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,8 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + /* IOVA mapping used by the Shadow Virtqueue */ + VhostIOVATree *iova_tree; } VhostVDPAShared; typedef struct vhost_vdpa { @@ -48,8 +50,6 @@ typedef struct vhost_vdpa { bool shadow_data; /* Device suspended successfully */ bool suspended; - /* IOVA mapping used by the Shadow Virtqueue */ - VhostIOVATree *iova_tree; VhostVDPAShared *shared; GPtrArray *shadow_vqs; const VhostShadowVirtqueueOps *shadow_vq_ops; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 819b2d811a..9cee38cb6d 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -358,7 +358,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, mem_region.size = int128_get64(llsize) - 1, mem_region.perm = IOMMU_ACCESS_FLAG(true, section->readonly), - r = vhost_iova_tree_map_alloc(v->iova_tree, &mem_region); + r = vhost_iova_tree_map_alloc(v->shared->iova_tree, &mem_region); if (unlikely(r != IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); goto fail; @@ -379,7 +379,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, fail_map: if (v->shadow_data) { - vhost_iova_tree_remove(v->iova_tree, mem_region); + vhost_iova_tree_remove(v->shared->iova_tree, mem_region); } fail: @@ -441,13 +441,13 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, .size = int128_get64(llsize) - 1, }; - result = vhost_iova_tree_find_iova(v->iova_tree, &mem_region); + result = vhost_iova_tree_find_iova(v->shared->iova_tree, &mem_region); if (!result) { /* The memory listener map wasn't mapped */ return; } iova = result->iova; - vhost_iova_tree_remove(v->iova_tree, *result); + vhost_iova_tree_remove(v->shared->iova_tree, *result); } vhost_vdpa_iotlb_batch_begin_once(v); /* @@ -1059,7 +1059,8 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, hwaddr addr) const DMAMap needle = { .translated_addr = addr, }; - const DMAMap *result = vhost_iova_tree_find_iova(v->iova_tree, &needle); + const DMAMap *result = vhost_iova_tree_find_iova(v->shared->iova_tree, + &needle); hwaddr size; int r; @@ -1075,7 +1076,7 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, hwaddr addr) return; } - vhost_iova_tree_remove(v->iova_tree, *result); + vhost_iova_tree_remove(v->shared->iova_tree, *result); } static void vhost_vdpa_svq_unmap_rings(struct vhost_dev *dev, @@ -1103,7 +1104,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle, { int r; - r = vhost_iova_tree_map_alloc(v->iova_tree, needle); + r = vhost_iova_tree_map_alloc(v->shared->iova_tree, needle); if (unlikely(r != IOVA_OK)) { error_setg(errp, "Cannot allocate iova (%d)", r); return false; @@ -1115,7 +1116,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle, needle->perm == IOMMU_RO); if (unlikely(r != 0)) { error_setg_errno(errp, -r, "Cannot map region to device"); - vhost_iova_tree_remove(v->iova_tree, *needle); + vhost_iova_tree_remove(v->shared->iova_tree, *needle); } return r == 0; @@ -1216,7 +1217,7 @@ static bool vhost_vdpa_svqs_start(struct vhost_dev *dev) goto err; } - vhost_svq_start(svq, dev->vdev, vq, v->iova_tree); + vhost_svq_start(svq, dev->vdev, vq, v->shared->iova_tree); ok = vhost_vdpa_svq_map_rings(dev, svq, &addr, &err); if (unlikely(!ok)) { goto err_map; diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 8b661b9e6d..10703e5833 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -354,8 +354,8 @@ static void vhost_vdpa_net_data_start_first(VhostVDPAState *s) migration_add_notifier(&s->migration_state, vdpa_net_migration_state_notifier); if (v->shadow_vqs_enabled) { - v->iova_tree = vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree = vhost_iova_tree_new(v->iova_range.first, + v->iova_range.last); } } @@ -380,11 +380,6 @@ static int vhost_vdpa_net_data_start(NetClientState *nc) return 0; } - if (v->shadow_vqs_enabled) { - VhostVDPAState *s0 = vhost_vdpa_net_first_nc_vdpa(s); - v->iova_tree = s0->vhost_vdpa.iova_tree; - } - return 0; } @@ -417,9 +412,8 @@ static void vhost_vdpa_net_client_stop(NetClientState *nc) dev = s->vhost_vdpa.dev; if (dev->vq_index + dev->nvqs == dev->vq_index_end) { - g_clear_pointer(&s->vhost_vdpa.iova_tree, vhost_iova_tree_delete); - } else { - s->vhost_vdpa.iova_tree = NULL; + g_clear_pointer(&s->vhost_vdpa.shared->iova_tree, + vhost_iova_tree_delete); } } @@ -474,7 +468,7 @@ static int vhost_vdpa_set_address_space_id(struct vhost_vdpa *v, static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr) { - VhostIOVATree *tree = v->iova_tree; + VhostIOVATree *tree = v->shared->iova_tree; DMAMap needle = { /* * No need to specify size or to look for more translations since @@ -508,7 +502,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v, void *buf, size_t size, map.translated_addr = (hwaddr)(uintptr_t)buf; map.size = size - 1; map.perm = write ? IOMMU_RW : IOMMU_RO, - r = vhost_iova_tree_map_alloc(v->iova_tree, &map); + r = vhost_iova_tree_map_alloc(v->shared->iova_tree, &map); if (unlikely(r != IOVA_OK)) { error_report("Cannot map injected element"); return r; @@ -523,7 +517,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v, void *buf, size_t size, return 0; dma_map_err: - vhost_iova_tree_remove(v->iova_tree, map); + vhost_iova_tree_remove(v->shared->iova_tree, map); return r; } @@ -583,24 +577,22 @@ out: return 0; } - if (s0->vhost_vdpa.iova_tree) { - /* - * SVQ is already configured for all virtqueues. Reuse IOVA tree for - * simplicity, whether CVQ shares ASID with guest or not, because: - * - Memory listener need access to guest's memory addresses allocated - * in the IOVA tree. - * - There should be plenty of IOVA address space for both ASID not to - * worry about collisions between them. Guest's translations are - * still validated with virtio virtqueue_pop so there is no risk for - * the guest to access memory that it shouldn't. - * - * To allocate a iova tree per ASID is doable but it complicates the - * code and it is not worth it for the moment. - */ - v->iova_tree = s0->vhost_vdpa.iova_tree; - } else { - v->iova_tree = vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + /* + * If other vhost_vdpa already have an iova_tree, reuse it for simplicity, + * whether CVQ shares ASID with guest or not, because: + * - Memory listener need access to guest's memory addresses allocated in + * the IOVA tree. + * - There should be plenty of IOVA address space for both ASID not to + * worry about collisions between them. Guest's translations are still + * validated with virtio virtqueue_pop so there is no risk for the guest + * to access memory that it shouldn't. + * + * To allocate a iova tree per ASID is doable but it complicates the code + * and it is not worth it for the moment. + */ + if (!v->shared->iova_tree) { + v->shared->iova_tree = vhost_iova_tree_new(v->iova_range.first, + v->iova_range.last); } r = vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer, From patchwork Fri Nov 24 17:14:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468031 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 B4CA8C61D97 for ; Fri, 24 Nov 2023 17:15:06 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6ZlQ-0004q0-12; Fri, 24 Nov 2023 12:14:48 -0500 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 1r6ZlO-0004pr-NY for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:46 -0500 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 1r6ZlM-0007TB-Vw for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846084; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0sr6CeTGcGFmmgka8kmssRb3KarYh0rUTrP+8AX7jIw=; b=REPCzEFYEGfmkMRNmWyPXsKcfbbA0Ar2zqCHuE4MF8eeFl0K4oJT0uYU4W5WQHmZVbvFtl NMAfVOJbhFN1l7QHZkkrsddHiepC93eS1jP42guFb2o9cF+lUtlxePWPuEztJ3xcxhrrte BC1yH1jD0ME1uVkuzJBH2ieHlpOvpo4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-360-gvaqENQoOz2SuIicZWO-Ww-1; Fri, 24 Nov 2023 12:14:40 -0500 X-MC-Unique: gvaqENQoOz2SuIicZWO-Ww-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A7B781022F12; Fri, 24 Nov 2023 17:14:39 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1672240C6EB9; Fri, 24 Nov 2023 17:14:37 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 03/13] vdpa: move iova_range to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:20 +0100 Message-Id: <20231124171430.2964464-4-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iova range to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 3 ++- hw/virtio/vdpa-dev.c | 5 ++++- hw/virtio/vhost-vdpa.c | 16 ++++++++++------ net/vhost-vdpa.c | 10 +++++----- 4 files changed, 21 insertions(+), 13 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index ac036055d3..8d52a7e498 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,8 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + struct vhost_vdpa_iova_range iova_range; + /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; } VhostVDPAShared; @@ -43,7 +45,6 @@ typedef struct vhost_vdpa { bool iotlb_batch_begin_sent; uint32_t address_space_id; MemoryListener listener; - struct vhost_vdpa_iova_range iova_range; uint64_t acked_features; bool shadow_vqs_enabled; /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index f22d5d5bc0..457960d28a 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -114,7 +114,8 @@ static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp) strerror(-ret)); goto free_vqs; } - v->vdpa.iova_range = iova_range; + v->vdpa.shared = g_new0(VhostVDPAShared, 1); + v->vdpa.shared->iova_range = iova_range; ret = vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, NULL); if (ret < 0) { @@ -162,6 +163,7 @@ vhost_cleanup: vhost_dev_cleanup(&v->dev); free_vqs: g_free(vqs); + g_free(v->vdpa.shared); out: qemu_close(v->vhostfd); v->vhostfd = -1; @@ -184,6 +186,7 @@ static void vhost_vdpa_device_unrealize(DeviceState *dev) g_free(s->config); g_free(s->dev.vqs); vhost_dev_cleanup(&s->dev); + g_free(s->vdpa.shared); qemu_close(s->vhostfd); s->vhostfd = -1; } diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 9cee38cb6d..2bceadd118 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -213,10 +213,10 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) RCU_READ_LOCK_GUARD(); /* check if RAM section out of device range */ llend = int128_add(int128_makes64(iotlb->addr_mask), int128_makes64(iova)); - if (int128_gt(llend, int128_make64(v->iova_range.last))) { + if (int128_gt(llend, int128_make64(v->shared->iova_range.last))) { error_report("RAM section out of device range (max=0x%" PRIx64 ", end addr=0x%" PRIx64 ")", - v->iova_range.last, int128_get64(llend)); + v->shared->iova_range.last, int128_get64(llend)); return; } @@ -316,8 +316,10 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, int page_size = qemu_target_page_size(); int page_mask = -page_size; - if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first, - v->iova_range.last, page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, + v->shared->iova_range.first, + v->shared->iova_range.last, + page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { @@ -403,8 +405,10 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, int page_size = qemu_target_page_size(); int page_mask = -page_size; - if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first, - v->iova_range.last, page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, + v->shared->iova_range.first, + v->shared->iova_range.last, + page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 10703e5833..7be2c30ad3 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -354,8 +354,8 @@ static void vhost_vdpa_net_data_start_first(VhostVDPAState *s) migration_add_notifier(&s->migration_state, vdpa_net_migration_state_notifier); if (v->shadow_vqs_enabled) { - v->shared->iova_tree = vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree = vhost_iova_tree_new(v->shared->iova_range.first, + v->shared->iova_range.last); } } @@ -591,8 +591,8 @@ out: * and it is not worth it for the moment. */ if (!v->shared->iova_tree) { - v->shared->iova_tree = vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree = vhost_iova_tree_new(v->shared->iova_range.first, + v->shared->iova_range.last); } r = vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer, @@ -1688,12 +1688,12 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, s->always_svq = svq; s->migration_state.notify = NULL; s->vhost_vdpa.shadow_vqs_enabled = svq; - s->vhost_vdpa.iova_range = iova_range; s->vhost_vdpa.shadow_data = svq; if (queue_pair_index == 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker); s->vhost_vdpa.shared = g_new0(VhostVDPAShared, 1); + s->vhost_vdpa.shared->iova_range = iova_range; } else if (!is_datapath) { s->cvq_cmd_out_buffer = mmap(NULL, vhost_vdpa_net_cvq_cmd_page_len(), PROT_READ | PROT_WRITE, From patchwork Fri Nov 24 17:14:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468032 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 3D598C61D97 for ; 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Fri, 24 Nov 2023 17:14:39 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 04/13] vdpa: move shadow_data to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:21 +0100 Message-Id: <20231124171430.2964464-5-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the shadow_data member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio Pérez Reviewed-by: Si-Wei Liu --- v1 from RFC: * Fix vhost_vdpa_net_cvq_start checking for always_svq instead of shadow_data. This could cause CVQ not being shadowed if vhost_vdpa_net_cvq_start was called in the middle of a migration. --- include/hw/virtio/vhost-vdpa.h | 5 +++-- hw/virtio/vhost-vdpa.c | 6 +++--- net/vhost-vdpa.c | 23 ++++++----------------- 3 files changed, 12 insertions(+), 22 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 8d52a7e498..01e0f25e27 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -36,6 +36,9 @@ typedef struct vhost_vdpa_shared { /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + + /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ + bool shadow_data; } VhostVDPAShared; typedef struct vhost_vdpa { @@ -47,8 +50,6 @@ typedef struct vhost_vdpa { MemoryListener listener; uint64_t acked_features; bool shadow_vqs_enabled; - /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ - bool shadow_data; /* Device suspended successfully */ bool suspended; VhostVDPAShared *shared; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 2bceadd118..ec028e4c56 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -353,7 +353,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, vaddr, section->readonly); llsize = int128_sub(llend, int128_make64(iova)); - if (v->shadow_data) { + if (v->shared->shadow_data) { int r; mem_region.translated_addr = (hwaddr)(uintptr_t)vaddr, @@ -380,7 +380,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, return; fail_map: - if (v->shadow_data) { + if (v->shared->shadow_data) { vhost_iova_tree_remove(v->shared->iova_tree, mem_region); } @@ -435,7 +435,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); - if (v->shadow_data) { + if (v->shared->shadow_data) { const DMAMap *result; const void *vaddr = memory_region_get_ram_ptr(section->mr) + section->offset_within_region + diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 7be2c30ad3..2376d9989a 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -290,15 +290,6 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc, const uint8_t *buf, return size; } -/** From any vdpa net client, get the netclient of the first queue pair */ -static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s) -{ - NICState *nic = qemu_get_nic(s->nc.peer); - NetClientState *nc0 = qemu_get_peer(nic->ncs, 0); - - return DO_UPCAST(VhostVDPAState, nc, nc0); -} - static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable) { struct vhost_vdpa *v = &s->vhost_vdpa; @@ -369,10 +360,10 @@ static int vhost_vdpa_net_data_start(NetClientState *nc) if (s->always_svq || migration_is_setup_or_active(migrate_get_current()->state)) { v->shadow_vqs_enabled = true; - v->shadow_data = true; + v->shared->shadow_data = true; } else { v->shadow_vqs_enabled = false; - v->shadow_data = false; + v->shared->shadow_data = false; } if (v->index == 0) { @@ -523,7 +514,7 @@ dma_map_err: static int vhost_vdpa_net_cvq_start(NetClientState *nc) { - VhostVDPAState *s, *s0; + VhostVDPAState *s; struct vhost_vdpa *v; int64_t cvq_group; int r; @@ -534,12 +525,10 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc) s = DO_UPCAST(VhostVDPAState, nc, nc); v = &s->vhost_vdpa; - s0 = vhost_vdpa_net_first_nc_vdpa(s); - v->shadow_data = s0->vhost_vdpa.shadow_vqs_enabled; - v->shadow_vqs_enabled = s0->vhost_vdpa.shadow_vqs_enabled; + v->shadow_vqs_enabled = v->shared->shadow_data; s->vhost_vdpa.address_space_id = VHOST_VDPA_GUEST_PA_ASID; - if (s->vhost_vdpa.shadow_data) { + if (v->shared->shadow_data) { /* SVQ is already configured for all virtqueues */ goto out; } @@ -1688,12 +1677,12 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, s->always_svq = svq; s->migration_state.notify = NULL; s->vhost_vdpa.shadow_vqs_enabled = svq; - s->vhost_vdpa.shadow_data = svq; if (queue_pair_index == 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker); s->vhost_vdpa.shared = g_new0(VhostVDPAShared, 1); s->vhost_vdpa.shared->iova_range = iova_range; + s->vhost_vdpa.shared->shadow_data = svq; } else if (!is_datapath) { s->cvq_cmd_out_buffer = mmap(NULL, vhost_vdpa_net_cvq_cmd_page_len(), PROT_READ | PROT_WRITE, From patchwork Fri Nov 24 17:14:22 2023 Content-Type: text/plain; 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Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 05/13] vdpa: use vdpa shared for tracing Date: Fri, 24 Nov 2023 18:14:22 +0100 Message-Id: <20231124171430.2964464-6-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 By the end of this series dma_map and dma_unmap functions don't have the vdpa device for tracing. Movinge trace function to shared member one. Print it also in the vdpa initialization so log reader can relate them. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost-vdpa.c | 26 ++++++++++++++------------ hw/virtio/trace-events | 14 +++++++------- 2 files changed, 21 insertions(+), 19 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index ec028e4c56..85de60b184 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -101,7 +101,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, msg.iotlb.perm = readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW; msg.iotlb.type = VHOST_IOTLB_UPDATE; - trace_vhost_vdpa_dma_map(v, fd, msg.type, msg.asid, msg.iotlb.iova, + trace_vhost_vdpa_dma_map(v->shared, fd, msg.type, msg.asid, msg.iotlb.iova, msg.iotlb.size, msg.iotlb.uaddr, msg.iotlb.perm, msg.iotlb.type); @@ -131,8 +131,8 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, msg.iotlb.size = size; msg.iotlb.type = VHOST_IOTLB_INVALIDATE; - trace_vhost_vdpa_dma_unmap(v, fd, msg.type, msg.asid, msg.iotlb.iova, - msg.iotlb.size, msg.iotlb.type); + trace_vhost_vdpa_dma_unmap(v->shared, fd, msg.type, msg.asid, + msg.iotlb.iova, msg.iotlb.size, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", @@ -151,7 +151,8 @@ static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) .iotlb.type = VHOST_IOTLB_BATCH_BEGIN, }; - trace_vhost_vdpa_listener_begin_batch(v, fd, msg.type, msg.iotlb.type); + trace_vhost_vdpa_listener_begin_batch(v->shared, fd, msg.type, + msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", fd, errno, strerror(errno)); @@ -186,7 +187,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) msg.type = v->msg_type; msg.iotlb.type = VHOST_IOTLB_BATCH_END; - trace_vhost_vdpa_listener_commit(v, fd, msg.type, msg.iotlb.type); + trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", fd, errno, strerror(errno)); @@ -329,7 +330,8 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, if (unlikely((section->offset_within_address_space & ~page_mask) != (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_add_unaligned(v, section->mr->name, + trace_vhost_vdpa_listener_region_add_unaligned(v->shared, + section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -349,7 +351,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, section->offset_within_region + (iova - section->offset_within_address_space); - trace_vhost_vdpa_listener_region_add(v, iova, int128_get64(llend), + trace_vhost_vdpa_listener_region_add(v->shared, iova, int128_get64(llend), vaddr, section->readonly); llsize = int128_sub(llend, int128_make64(iova)); @@ -417,7 +419,8 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, if (unlikely((section->offset_within_address_space & ~page_mask) != (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_del_unaligned(v, section->mr->name, + trace_vhost_vdpa_listener_region_del_unaligned(v->shared, + section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -426,7 +429,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, iova = ROUND_UP(section->offset_within_address_space, page_size); llend = vhost_vdpa_section_end(section, page_mask); - trace_vhost_vdpa_listener_region_del(v, iova, + trace_vhost_vdpa_listener_region_del(v->shared, iova, int128_get64(int128_sub(llend, int128_one()))); if (int128_ge(int128_make64(iova), llend)) { @@ -583,12 +586,11 @@ static void vhost_vdpa_init_svq(struct vhost_dev *hdev, struct vhost_vdpa *v) static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp) { - struct vhost_vdpa *v; + struct vhost_vdpa *v = opaque; assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA); - trace_vhost_vdpa_init(dev, opaque); + trace_vhost_vdpa_init(dev, v->shared, opaque); int ret; - v = opaque; v->dev = dev; dev->opaque = opaque ; v->listener = vhost_vdpa_memory_listener; diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 637cac4edf..77905d1994 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -30,16 +30,16 @@ vhost_user_write(uint32_t req, uint32_t flags) "req:%d flags:0x%"PRIx32"" vhost_user_create_notifier(int idx, void *n) "idx:%d n:%p" # vhost-vdpa.c -vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" uaddr: 0x%"PRIx64" perm: 0x%"PRIx8" type: %"PRIu8 -vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8 -vhost_vdpa_listener_begin_batch(void *v, int fd, uint32_t msg_type, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 -vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 -vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64 +vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" uaddr: 0x%"PRIx64" perm: 0x%"PRIx8" type: %"PRIu8 +vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8 +vhost_vdpa_listener_begin_batch(void *v, int fd, uint32_t msg_type, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 +vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 +vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64 vhost_vdpa_listener_region_add(void *vdpa, uint64_t iova, uint64_t llend, void *vaddr, bool readonly) "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64" vaddr: %p read-only: %d" -vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64 +vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64 vhost_vdpa_listener_region_del(void *vdpa, uint64_t iova, uint64_t llend) "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64 vhost_vdpa_add_status(void *dev, uint8_t status) "dev: %p status: 0x%"PRIx8 -vhost_vdpa_init(void *dev, void *vdpa) "dev: %p vdpa: %p" +vhost_vdpa_init(void *dev, void *s, void *vdpa) "dev: %p, common dev: %p vdpa: %p" vhost_vdpa_cleanup(void *dev, void *vdpa) "dev: %p vdpa: %p" vhost_vdpa_memslots_limit(void *dev, int ret) "dev: %p = 0x%x" vhost_vdpa_set_mem_table(void *dev, uint32_t nregions, uint32_t padding) "dev: %p nregions: %"PRIu32" padding: 0x%"PRIx32 From patchwork Fri Nov 24 17:14:23 2023 Content-Type: text/plain; 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Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 06/13] vdpa: move file descriptor to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:23 +0100 Message-Id: <20231124171430.2964464-7-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the file descriptor to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vdpa-dev.c | 2 +- hw/virtio/vhost-vdpa.c | 14 +++++++------- net/vhost-vdpa.c | 11 ++++------- 4 files changed, 13 insertions(+), 16 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 01e0f25e27..796a180afa 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,7 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + int device_fd; struct vhost_vdpa_iova_range iova_range; /* IOVA mapping used by the Shadow Virtqueue */ @@ -42,7 +43,6 @@ typedef struct vhost_vdpa_shared { } VhostVDPAShared; typedef struct vhost_vdpa { - int device_fd; int index; uint32_t msg_type; bool iotlb_batch_begin_sent; diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index 457960d28a..8774986571 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -66,7 +66,6 @@ static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp) if (*errp) { return; } - v->vdpa.device_fd = v->vhostfd; v->vdev_id = vhost_vdpa_device_get_u32(v->vhostfd, VHOST_VDPA_GET_DEVICE_ID, errp); @@ -115,6 +114,7 @@ static void vhost_vdpa_device_realize(DeviceState *dev, Error **errp) goto free_vqs; } v->vdpa.shared = g_new0(VhostVDPAShared, 1); + v->vdpa.shared->device_fd = v->vhostfd; v->vdpa.shared->iova_range = iova_range; ret = vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, NULL); diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 85de60b184..095543395b 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -90,7 +90,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly) { struct vhost_msg_v2 msg = {}; - int fd = v->device_fd; + int fd = v->shared->device_fd; int ret = 0; msg.type = v->msg_type; @@ -122,7 +122,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, hwaddr size) { struct vhost_msg_v2 msg = {}; - int fd = v->device_fd; + int fd = v->shared->device_fd; int ret = 0; msg.type = v->msg_type; @@ -145,7 +145,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) { - int fd = v->device_fd; + int fd = v->shared->device_fd; struct vhost_msg_v2 msg = { .type = v->msg_type, .iotlb.type = VHOST_IOTLB_BATCH_BEGIN, @@ -174,7 +174,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); struct vhost_dev *dev = v->dev; struct vhost_msg_v2 msg = {}; - int fd = v->device_fd; + int fd = v->shared->device_fd; if (!(dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { return; @@ -499,7 +499,7 @@ static int vhost_vdpa_call(struct vhost_dev *dev, unsigned long int request, void *arg) { struct vhost_vdpa *v = dev->opaque; - int fd = v->device_fd; + int fd = v->shared->device_fd; int ret; assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_VDPA); @@ -657,7 +657,7 @@ static int vhost_vdpa_host_notifier_init(struct vhost_dev *dev, int queue_index) struct vhost_vdpa *v = dev->opaque; VirtIODevice *vdev = dev->vdev; VhostVDPAHostNotifier *n; - int fd = v->device_fd; + int fd = v->shared->device_fd; void *addr; char *name; @@ -1286,7 +1286,7 @@ static void vhost_vdpa_suspend(struct vhost_dev *dev) if (dev->backend_cap & BIT_ULL(VHOST_BACKEND_F_SUSPEND)) { trace_vhost_vdpa_suspend(dev); - r = ioctl(v->device_fd, VHOST_VDPA_SUSPEND); + r = ioctl(v->shared->device_fd, VHOST_VDPA_SUSPEND); if (unlikely(r)) { error_report("Cannot suspend: %s(%d)", g_strerror(errno), errno); } else { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 2376d9989a..3aefd77968 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -235,14 +235,11 @@ static void vhost_vdpa_cleanup(NetClientState *nc) vhost_net_cleanup(s->vhost_net); g_free(s->vhost_net); s->vhost_net = NULL; - } - if (s->vhost_vdpa.device_fd >= 0) { - qemu_close(s->vhost_vdpa.device_fd); - s->vhost_vdpa.device_fd = -1; } if (s->vhost_vdpa.index != 0) { return; } + qemu_close(s->vhost_vdpa.shared->device_fd); g_free(s->vhost_vdpa.shared); } @@ -449,7 +446,7 @@ static int vhost_vdpa_set_address_space_id(struct vhost_vdpa *v, }; int r; - r = ioctl(v->device_fd, VHOST_VDPA_SET_GROUP_ASID, &asid); + r = ioctl(v->shared->device_fd, VHOST_VDPA_SET_GROUP_ASID, &asid); if (unlikely(r < 0)) { error_report("Can't set vq group %u asid %u, errno=%d (%s)", asid.index, asid.num, errno, g_strerror(errno)); @@ -545,7 +542,7 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc) return 0; } - cvq_group = vhost_vdpa_get_vring_group(v->device_fd, + cvq_group = vhost_vdpa_get_vring_group(v->shared->device_fd, v->dev->vq_index_end - 1, &err); if (unlikely(cvq_group < 0)) { @@ -1672,7 +1669,6 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, qemu_set_info_str(nc, TYPE_VHOST_VDPA); s = DO_UPCAST(VhostVDPAState, nc, nc); - s->vhost_vdpa.device_fd = vdpa_device_fd; s->vhost_vdpa.index = queue_pair_index; s->always_svq = svq; s->migration_state.notify = NULL; @@ -1681,6 +1677,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker); s->vhost_vdpa.shared = g_new0(VhostVDPAShared, 1); + s->vhost_vdpa.shared->device_fd = vdpa_device_fd; s->vhost_vdpa.shared->iova_range = iova_range; s->vhost_vdpa.shared->shadow_data = svq; } else if (!is_datapath) { From patchwork Fri Nov 24 17:14:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468046 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 7AF09C61DF4 for ; Fri, 24 Nov 2023 17:17:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6ZlX-0004sE-22; 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Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 07/13] vdpa: move iotlb_batch_begin_sent to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:24 +0100 Message-Id: <20231124171430.2964464-8-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iotlb_batch_begin_sent member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 3 ++- hw/virtio/vhost-vdpa.c | 8 ++++---- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 796a180afa..05219bbcf7 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -38,6 +38,8 @@ typedef struct vhost_vdpa_shared { /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + bool iotlb_batch_begin_sent; + /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ bool shadow_data; } VhostVDPAShared; @@ -45,7 +47,6 @@ typedef struct vhost_vdpa_shared { typedef struct vhost_vdpa { int index; uint32_t msg_type; - bool iotlb_batch_begin_sent; uint32_t address_space_id; MemoryListener listener; uint64_t acked_features; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 095543395b..85b13e09f4 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -162,11 +162,11 @@ static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) { if (v->dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && - !v->iotlb_batch_begin_sent) { + !v->shared->iotlb_batch_begin_sent) { vhost_vdpa_listener_begin_batch(v); } - v->iotlb_batch_begin_sent = true; + v->shared->iotlb_batch_begin_sent = true; } static void vhost_vdpa_listener_commit(MemoryListener *listener) @@ -180,7 +180,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) return; } - if (!v->iotlb_batch_begin_sent) { + if (!v->shared->iotlb_batch_begin_sent) { return; } @@ -193,7 +193,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) fd, errno, strerror(errno)); } - v->iotlb_batch_begin_sent = false; + v->shared->iotlb_batch_begin_sent = false; } static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) From patchwork Fri Nov 24 17:14:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468040 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 F205FC61D97 for ; Fri, 24 Nov 2023 17:17:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6ZlX-0004sN-KH; Fri, 24 Nov 2023 12:14:55 -0500 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 1r6ZlW-0004s6-P9 for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:54 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r6ZlU-0007U2-9e for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:53 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846091; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Voz6IUVRuuyB67lP5Ct6pjJ4GaYZeqRETUTUCmyj3Dg=; b=bwES6XBIyLlAuTPRoj2HnBqbos9gvpy9R5fd5GaKF6PAijW+/pbX7RaKlOZQcQwhqhDOpM D1GuE1/KDU7ISf6qTSGocXPhrJTEdfu5h1Usnc1Tq9FIUhEo+sbW5/uEJYt1HRnwIBeycv YWqETnuXOEpFQDutYSa8ukkQ9lCWzQY= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-441-FOmah7gfO66StC8e3A2Nxw-1; Fri, 24 Nov 2023 12:14:49 -0500 X-MC-Unique: FOmah7gfO66StC8e3A2Nxw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CB1573C13924; Fri, 24 Nov 2023 17:14:48 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3EEF440C6EB9; Fri, 24 Nov 2023 17:14:47 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 08/13] vdpa: move backend_cap to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:25 +0100 Message-Id: <20231124171430.2964464-9-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the backend_cap member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 3 +++ hw/virtio/vhost-vdpa.c | 8 +++++--- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 05219bbcf7..11ac14085a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -38,6 +38,9 @@ typedef struct vhost_vdpa_shared { /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + /* Copy of backend features */ + uint64_t backend_cap; + bool iotlb_batch_begin_sent; /* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */ diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 85b13e09f4..458e46befd 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -161,7 +161,7 @@ static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) { - if (v->dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && + if (v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && !v->shared->iotlb_batch_begin_sent) { vhost_vdpa_listener_begin_batch(v); } @@ -172,11 +172,10 @@ static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) static void vhost_vdpa_listener_commit(MemoryListener *listener) { struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); - struct vhost_dev *dev = v->dev; struct vhost_msg_v2 msg = {}; int fd = v->shared->device_fd; - if (!(dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { + if (!(v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { return; } @@ -834,6 +833,8 @@ static int vhost_vdpa_set_features(struct vhost_dev *dev, static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev) { + struct vhost_vdpa *v = dev->opaque; + uint64_t features; uint64_t f = 0x1ULL << VHOST_BACKEND_F_IOTLB_MSG_V2 | 0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH | @@ -855,6 +856,7 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev) } dev->backend_cap = features; + v->shared->backend_cap = features; return 0; } From patchwork Fri Nov 24 17:14:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468038 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 B0657C61DF4 for ; Fri, 24 Nov 2023 17:16:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6Zlh-0004zW-K2; Fri, 24 Nov 2023 12:15:08 -0500 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 1r6Zlb-0004u8-FD for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:59 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r6ZlZ-0007Uq-VT for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846097; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=03R2z9ZlBcOIADCEWXSEL4pv+V1SmYU3+GZXyJ/Mxtc=; b=a+XgHc8NUYcE+4KjiyuItGjZMrBn64qt082Ivs+rEN36Wh9eZvpEFUeoye2uzlIahX7g4n XD/6ON+NjXUnPJ8wSJkAD9nK0QqkkRY6WfxCrMMPjd/RSL3pmj9CFs1H/gi/fyAF4Cez3o onuXUmSa6EHab8oo5VuuGXqyEpptbCg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-115-Iw3yztSWNTaegFx_I8qBFA-1; Fri, 24 Nov 2023 12:14:51 -0500 X-MC-Unique: Iw3yztSWNTaegFx_I8qBFA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A1DAB82A6C4; Fri, 24 Nov 2023 17:14:50 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id 13F4E40C6EB9; Fri, 24 Nov 2023 17:14:48 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 09/13] vdpa: remove msg type of vhost_vdpa Date: Fri, 24 Nov 2023 18:14:26 +0100 Message-Id: <20231124171430.2964464-10-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 It is always VHOST_IOTLB_MSG_V2. We can always make it back per vhost_dev if needed. This change makes easier for vhost_vdpa_map and unmap not to depend on vhost_vdpa but only in VhostVDPAShared. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 1 - hw/virtio/vhost-vdpa.c | 9 ++++----- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 11ac14085a..5bd964dac5 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -49,7 +49,6 @@ typedef struct vhost_vdpa_shared { typedef struct vhost_vdpa { int index; - uint32_t msg_type; uint32_t address_space_id; MemoryListener listener; uint64_t acked_features; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 458e46befd..38afcbf1c9 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -93,7 +93,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, int fd = v->shared->device_fd; int ret = 0; - msg.type = v->msg_type; + msg.type = VHOST_IOTLB_MSG_V2; msg.asid = asid; msg.iotlb.iova = iova; msg.iotlb.size = size; @@ -125,7 +125,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, int fd = v->shared->device_fd; int ret = 0; - msg.type = v->msg_type; + msg.type = VHOST_IOTLB_MSG_V2; msg.asid = asid; msg.iotlb.iova = iova; msg.iotlb.size = size; @@ -147,7 +147,7 @@ static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) { int fd = v->shared->device_fd; struct vhost_msg_v2 msg = { - .type = v->msg_type, + .type = VHOST_IOTLB_MSG_V2, .iotlb.type = VHOST_IOTLB_BATCH_BEGIN, }; @@ -183,7 +183,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) return; } - msg.type = v->msg_type; + msg.type = VHOST_IOTLB_MSG_V2; msg.iotlb.type = VHOST_IOTLB_BATCH_END; trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.type); @@ -593,7 +593,6 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp) v->dev = dev; dev->opaque = opaque ; v->listener = vhost_vdpa_memory_listener; - v->msg_type = VHOST_IOTLB_MSG_V2; vhost_vdpa_init_svq(dev, v); error_propagate(&dev->migration_blocker, v->migration_blocker); From patchwork Fri Nov 24 17:14:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468048 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 99DD5C61DF4 for ; Fri, 24 Nov 2023 17:18:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6Zlb-0004u3-85; Fri, 24 Nov 2023 12:14:59 -0500 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 1r6ZlY-0004sk-OE for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:56 -0500 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 1r6ZlW-0007UG-P8 for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:14:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846094; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tCrY7WFJPeu9W4R+draJq6n3+jMnBihTvHW1n6FIsqw=; b=Kdq9JPlsFpNE2far3b1MsP2HHnIbJiPHHiB8iLweFGeJJZLbVIH3ORcwnGiaxaNXVtjYie IfubOsG48ykKq/QVwPybw6uCKkk5sGoN4npqY6hSbmjnAz3soxgtXxJfQm7cMc4LyhV1ek JJX4VompygJOHAdOcECEKRW3XUxl1Hw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-552-m4d7bqeCPvGPHKjonuajZw-1; Fri, 24 Nov 2023 12:14:52 -0500 X-MC-Unique: m4d7bqeCPvGPHKjonuajZw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 77F8382A6C0; Fri, 24 Nov 2023 17:14:52 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id DF84740C6EB9; Fri, 24 Nov 2023 17:14:50 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 10/13] vdpa: move iommu_list to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:27 +0100 Message-Id: <20231124171430.2964464-11-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iommu_list member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 5bd964dac5..3880b9e7f2 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -34,6 +34,7 @@ typedef struct VhostVDPAHostNotifier { typedef struct vhost_vdpa_shared { int device_fd; struct vhost_vdpa_iova_range iova_range; + QLIST_HEAD(, vdpa_iommu) iommu_list; /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; @@ -62,7 +63,6 @@ typedef struct vhost_vdpa { struct vhost_dev *dev; Error *migration_blocker; VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; - QLIST_HEAD(, vdpa_iommu) iommu_list; IOMMUNotifier n; } VhostVDPA; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 38afcbf1c9..a07cd85081 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -279,7 +279,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener *listener, return; } - QLIST_INSERT_HEAD(&v->iommu_list, iommu, iommu_next); + QLIST_INSERT_HEAD(&v->shared->iommu_list, iommu, iommu_next); memory_region_iommu_replay(iommu->iommu_mr, &iommu->n); return; @@ -292,7 +292,7 @@ static void vhost_vdpa_iommu_region_del(MemoryListener *listener, struct vdpa_iommu *iommu; - QLIST_FOREACH(iommu, &v->iommu_list, iommu_next) + QLIST_FOREACH(iommu, &v->shared->iommu_list, iommu_next) { if (MEMORY_REGION(iommu->iommu_mr) == section->mr && iommu->n.start == section->offset_within_region) { From patchwork Fri Nov 24 17:14:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468034 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 9E49EC61DF4 for ; Fri, 24 Nov 2023 17:15:39 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r6Zlw-0005A7-P1; Fri, 24 Nov 2023 12:15:20 -0500 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 1r6Zld-0004uX-Gt for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:15:02 -0500 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 1r6Zlb-0007Ux-E8 for qemu-devel@nongnu.org; Fri, 24 Nov 2023 12:15:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700846098; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=D+wDxFoCDXKU9UUz93Ko6gMbNfczn17PejopNS2mzBY=; b=I44gbRy9I2F42rQCQ1pZj1pgWw8s4hUY+nqHzWY08+862ettD+pkxyc+uI1mhtI+SfkQwd 4gC7sBDn5Rgo39m8W3PhHkpfy5ZiDvdRUITh2ZDFGIOq3iy+d6YK9FmWA6FXos9W1Qf6Z6 7Sr9hC2N51j+ibJ/syuoNFiZcx7Ecpw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-562-U8xT--X1N-iLXjzprNJxhw-1; Fri, 24 Nov 2023 12:14:54 -0500 X-MC-Unique: U8xT--X1N-iLXjzprNJxhw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4EA07811E7B; Fri, 24 Nov 2023 17:14:54 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.169]) by smtp.corp.redhat.com (Postfix) with ESMTP id B609E40C6EB9; Fri, 24 Nov 2023 17:14:52 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 11/13] vdpa: use VhostVDPAShared in vdpa_dma_map and unmap Date: Fri, 24 Nov 2023 18:14:28 +0100 Message-Id: <20231124171430.2964464-12-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 The callers only have the shared information by the end of this series. Start converting this functions. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 4 +-- hw/virtio/vhost-vdpa.c | 50 +++++++++++++++++----------------- net/vhost-vdpa.c | 5 ++-- 3 files changed, 30 insertions(+), 29 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 3880b9e7f2..705c754776 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -69,9 +69,9 @@ typedef struct vhost_vdpa { int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range); int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx); -int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly); -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size); typedef struct vdpa_iommu { diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index a07cd85081..0ed6550aad 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -86,11 +86,11 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section, * The caller must set asid = 0 if the device does not support asid. * This is not an ABI break since it is set to 0 by the initializer anyway. */ -int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly) { struct vhost_msg_v2 msg = {}; - int fd = v->shared->device_fd; + int fd = s->device_fd; int ret = 0; msg.type = VHOST_IOTLB_MSG_V2; @@ -101,7 +101,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, msg.iotlb.perm = readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW; msg.iotlb.type = VHOST_IOTLB_UPDATE; - trace_vhost_vdpa_dma_map(v->shared, fd, msg.type, msg.asid, msg.iotlb.iova, + trace_vhost_vdpa_dma_map(s, fd, msg.type, msg.asid, msg.iotlb.iova, msg.iotlb.size, msg.iotlb.uaddr, msg.iotlb.perm, msg.iotlb.type); @@ -118,11 +118,11 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, * The caller must set asid = 0 if the device does not support asid. * This is not an ABI break since it is set to 0 by the initializer anyway. */ -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size) { struct vhost_msg_v2 msg = {}; - int fd = v->shared->device_fd; + int fd = s->device_fd; int ret = 0; msg.type = VHOST_IOTLB_MSG_V2; @@ -131,8 +131,8 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, msg.iotlb.size = size; msg.iotlb.type = VHOST_IOTLB_INVALIDATE; - trace_vhost_vdpa_dma_unmap(v->shared, fd, msg.type, msg.asid, - msg.iotlb.iova, msg.iotlb.size, msg.iotlb.type); + trace_vhost_vdpa_dma_unmap(s, fd, msg.type, msg.asid, msg.iotlb.iova, + msg.iotlb.size, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", @@ -143,30 +143,29 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, return ret; } -static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) +static void vhost_vdpa_listener_begin_batch(VhostVDPAShared *s) { - int fd = v->shared->device_fd; + int fd = s->device_fd; struct vhost_msg_v2 msg = { .type = VHOST_IOTLB_MSG_V2, .iotlb.type = VHOST_IOTLB_BATCH_BEGIN, }; - trace_vhost_vdpa_listener_begin_batch(v->shared, fd, msg.type, - msg.iotlb.type); + trace_vhost_vdpa_listener_begin_batch(s, fd, msg.type, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", fd, errno, strerror(errno)); } } -static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) +static void vhost_vdpa_iotlb_batch_begin_once(VhostVDPAShared *s) { - if (v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && - !v->shared->iotlb_batch_begin_sent) { - vhost_vdpa_listener_begin_batch(v); + if (s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && + !s->iotlb_batch_begin_sent) { + vhost_vdpa_listener_begin_batch(s); } - v->shared->iotlb_batch_begin_sent = true; + s->iotlb_batch_begin_sent = true; } static void vhost_vdpa_listener_commit(MemoryListener *listener) @@ -226,7 +225,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL)) { return; } - ret = vhost_vdpa_dma_map(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1, vaddr, read_only); if (ret) { error_report("vhost_vdpa_dma_map(%p, 0x%" HWADDR_PRIx ", " @@ -234,7 +233,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) v, iova, iotlb->addr_mask + 1, vaddr, ret); } } else { - ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " @@ -370,8 +369,8 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, iova = mem_region.iova; } - vhost_vdpa_iotlb_batch_begin_once(v); - ret = vhost_vdpa_dma_map(v, VHOST_VDPA_GUEST_PA_ASID, iova, + vhost_vdpa_iotlb_batch_begin_once(v->shared); + ret = vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize), vaddr, section->readonly); if (ret) { error_report("vhost vdpa map fail!"); @@ -455,13 +454,13 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, iova = result->iova; vhost_iova_tree_remove(v->shared->iova_tree, *result); } - vhost_vdpa_iotlb_batch_begin_once(v); + vhost_vdpa_iotlb_batch_begin_once(v->shared); /* * The unmap ioctl doesn't accept a full 64-bit. need to check it */ if (int128_eq(llsize, int128_2_64())) { llsize = int128_rshift(llsize, 1); - ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); if (ret) { @@ -471,7 +470,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, } iova += int128_get64(llsize); } - ret = vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); if (ret) { @@ -1077,7 +1076,8 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, hwaddr addr) } size = ROUND_UP(result->size, qemu_real_host_page_size()); - r = vhost_vdpa_dma_unmap(v, v->address_space_id, result->iova, size); + r = vhost_vdpa_dma_unmap(v->shared, v->address_space_id, result->iova, + size); if (unlikely(r < 0)) { error_report("Unable to unmap SVQ vring: %s (%d)", g_strerror(-r), -r); return; @@ -1117,7 +1117,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle, return false; } - r = vhost_vdpa_dma_map(v, v->address_space_id, needle->iova, + r = vhost_vdpa_dma_map(v->shared, v->address_space_id, needle->iova, needle->size + 1, (void *)(uintptr_t)needle->translated_addr, needle->perm == IOMMU_RO); diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 3aefd77968..3fb209cd35 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -472,7 +472,8 @@ static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr) return; } - r = vhost_vdpa_dma_unmap(v, v->address_space_id, map->iova, map->size + 1); + r = vhost_vdpa_dma_unmap(v->shared, v->address_space_id, map->iova, + map->size + 1); if (unlikely(r != 0)) { error_report("Device cannot unmap: %s(%d)", g_strerror(r), r); } @@ -496,7 +497,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v, void *buf, size_t size, return r; } - r = vhost_vdpa_dma_map(v, v->address_space_id, map.iova, + r = vhost_vdpa_dma_map(v->shared, v->address_space_id, map.iova, vhost_vdpa_net_cvq_cmd_page_len(), buf, !write); if (unlikely(r < 0)) { goto dma_map_err; From patchwork Fri Nov 24 17:14:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468036 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 F3F0DC636CB for ; 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Fri, 24 Nov 2023 17:14:54 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 12/13] vdpa: use dev_shared in vdpa_iommu Date: Fri, 24 Nov 2023 18:14:29 +0100 Message-Id: <20231124171430.2964464-13-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 The memory listener functions can call these too. Make vdpa_iommu work with VhostVDPAShared. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 16 ++++++++-------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 705c754776..2abee2164a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -75,7 +75,7 @@ int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size); typedef struct vdpa_iommu { - struct vhost_vdpa *dev; + VhostVDPAShared *dev_shared; IOMMUMemoryRegion *iommu_mr; hwaddr iommu_offset; IOMMUNotifier n; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0ed6550aad..61553ad196 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -199,7 +199,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) struct vdpa_iommu *iommu = container_of(n, struct vdpa_iommu, n); hwaddr iova = iotlb->iova + iommu->iommu_offset; - struct vhost_vdpa *v = iommu->dev; + VhostVDPAShared *s = iommu->dev_shared; void *vaddr; int ret; Int128 llend; @@ -212,10 +212,10 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) RCU_READ_LOCK_GUARD(); /* check if RAM section out of device range */ llend = int128_add(int128_makes64(iotlb->addr_mask), int128_makes64(iova)); - if (int128_gt(llend, int128_make64(v->shared->iova_range.last))) { + if (int128_gt(llend, int128_make64(s->iova_range.last))) { error_report("RAM section out of device range (max=0x%" PRIx64 ", end addr=0x%" PRIx64 ")", - v->shared->iova_range.last, int128_get64(llend)); + s->iova_range.last, int128_get64(llend)); return; } @@ -225,20 +225,20 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL)) { return; } - ret = vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_map(s, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1, vaddr, read_only); if (ret) { error_report("vhost_vdpa_dma_map(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ", %p) = %d (%m)", - v, iova, iotlb->addr_mask + 1, vaddr, ret); + s, iova, iotlb->addr_mask + 1, vaddr, ret); } } else { - ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") = %d (%m)", - v, iova, iotlb->addr_mask + 1, ret); + s, iova, iotlb->addr_mask + 1, ret); } } } @@ -270,7 +270,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener *listener, iommu_idx); iommu->iommu_offset = section->offset_within_address_space - section->offset_within_region; - iommu->dev = v; + iommu->dev_shared = v->shared; ret = memory_region_register_iommu_notifier(section->mr, &iommu->n, NULL); if (ret) { From patchwork Fri Nov 24 17:14:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13468033 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 A904FC636BD for ; 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Fri, 24 Nov 2023 17:14:56 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Parav Pandit , si-wei.liu@oracle.com, Stefano Garzarella , Zhu Lingshan , Lei Yang , "Michael S. Tsirkin" , Jason Wang , Dragos Tatulea , Laurent Vivier Subject: [PATCH 9.0 13/13] vdpa: move memory listener to vhost_vdpa_shared Date: Fri, 24 Nov 2023 18:14:30 +0100 Message-Id: <20231124171430.2964464-14-eperezma@redhat.com> In-Reply-To: <20231124171430.2964464-1-eperezma@redhat.com> References: <20231124171430.2964464-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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, T_SCC_BODY_TEXT_LINE=-0.01 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 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the memory listener to a common place rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio Pérez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 84 ++++++++++++++++------------------ 2 files changed, 40 insertions(+), 46 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 2abee2164a..8f54e5edd4 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -33,6 +33,7 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { int device_fd; + MemoryListener listener; struct vhost_vdpa_iova_range iova_range; QLIST_HEAD(, vdpa_iommu) iommu_list; @@ -51,7 +52,6 @@ typedef struct vhost_vdpa_shared { typedef struct vhost_vdpa { int index; uint32_t address_space_id; - MemoryListener listener; uint64_t acked_features; bool shadow_vqs_enabled; /* Device suspended successfully */ diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 61553ad196..7500c2fc82 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -170,28 +170,28 @@ static void vhost_vdpa_iotlb_batch_begin_once(VhostVDPAShared *s) static void vhost_vdpa_listener_commit(MemoryListener *listener) { - struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); + VhostVDPAShared *s = container_of(listener, VhostVDPAShared, listener); struct vhost_msg_v2 msg = {}; - int fd = v->shared->device_fd; + int fd = s->device_fd; - if (!(v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { + if (!(s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { return; } - if (!v->shared->iotlb_batch_begin_sent) { + if (!s->iotlb_batch_begin_sent) { return; } msg.type = VHOST_IOTLB_MSG_V2; msg.iotlb.type = VHOST_IOTLB_BATCH_END; - trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.type); + trace_vhost_vdpa_listener_commit(s, fd, msg.type, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", fd, errno, strerror(errno)); } - v->shared->iotlb_batch_begin_sent = false; + s->iotlb_batch_begin_sent = false; } static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) @@ -246,7 +246,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb) static void vhost_vdpa_iommu_region_add(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); + VhostVDPAShared *s = container_of(listener, VhostVDPAShared, listener); struct vdpa_iommu *iommu; Int128 end; @@ -270,7 +270,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener *listener, iommu_idx); iommu->iommu_offset = section->offset_within_address_space - section->offset_within_region; - iommu->dev_shared = v->shared; + iommu->dev_shared = s; ret = memory_region_register_iommu_notifier(section->mr, &iommu->n, NULL); if (ret) { @@ -278,7 +278,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener *listener, return; } - QLIST_INSERT_HEAD(&v->shared->iommu_list, iommu, iommu_next); + QLIST_INSERT_HEAD(&s->iommu_list, iommu, iommu_next); memory_region_iommu_replay(iommu->iommu_mr, &iommu->n); return; @@ -287,11 +287,11 @@ static void vhost_vdpa_iommu_region_add(MemoryListener *listener, static void vhost_vdpa_iommu_region_del(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); + VhostVDPAShared *s = container_of(listener, VhostVDPAShared, listener); struct vdpa_iommu *iommu; - QLIST_FOREACH(iommu, &v->shared->iommu_list, iommu_next) + QLIST_FOREACH(iommu, &s->iommu_list, iommu_next) { if (MEMORY_REGION(iommu->iommu_mr) == section->mr && iommu->n.start == section->offset_within_region) { @@ -307,7 +307,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, MemoryRegionSection *section) { DMAMap mem_region = {}; - struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); + VhostVDPAShared *s = container_of(listener, VhostVDPAShared, listener); hwaddr iova; Int128 llend, llsize; void *vaddr; @@ -315,10 +315,8 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, int page_size = qemu_target_page_size(); int page_mask = -page_size; - if (vhost_vdpa_listener_skipped_section(section, - v->shared->iova_range.first, - v->shared->iova_range.last, - page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, s->iova_range.first, + s->iova_range.last, page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { @@ -328,8 +326,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, if (unlikely((section->offset_within_address_space & ~page_mask) != (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_add_unaligned(v->shared, - section->mr->name, + trace_vhost_vdpa_listener_region_add_unaligned(s, section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -349,18 +346,18 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, section->offset_within_region + (iova - section->offset_within_address_space); - trace_vhost_vdpa_listener_region_add(v->shared, iova, int128_get64(llend), + trace_vhost_vdpa_listener_region_add(s, iova, int128_get64(llend), vaddr, section->readonly); llsize = int128_sub(llend, int128_make64(iova)); - if (v->shared->shadow_data) { + if (s->shadow_data) { int r; mem_region.translated_addr = (hwaddr)(uintptr_t)vaddr, mem_region.size = int128_get64(llsize) - 1, mem_region.perm = IOMMU_ACCESS_FLAG(true, section->readonly), - r = vhost_iova_tree_map_alloc(v->shared->iova_tree, &mem_region); + r = vhost_iova_tree_map_alloc(s->iova_tree, &mem_region); if (unlikely(r != IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); goto fail; @@ -369,8 +366,8 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, iova = mem_region.iova; } - vhost_vdpa_iotlb_batch_begin_once(v->shared); - ret = vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + vhost_vdpa_iotlb_batch_begin_once(s); + ret = vhost_vdpa_dma_map(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize), vaddr, section->readonly); if (ret) { error_report("vhost vdpa map fail!"); @@ -380,8 +377,8 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, return; fail_map: - if (v->shared->shadow_data) { - vhost_iova_tree_remove(v->shared->iova_tree, mem_region); + if (s->shadow_data) { + vhost_iova_tree_remove(s->iova_tree, mem_region); } fail: @@ -398,17 +395,15 @@ fail: static void vhost_vdpa_listener_region_del(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); + VhostVDPAShared *s = container_of(listener, VhostVDPAShared, listener); hwaddr iova; Int128 llend, llsize; int ret; int page_size = qemu_target_page_size(); int page_mask = -page_size; - if (vhost_vdpa_listener_skipped_section(section, - v->shared->iova_range.first, - v->shared->iova_range.last, - page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, s->iova_range.first, + s->iova_range.last, page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { @@ -417,8 +412,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, if (unlikely((section->offset_within_address_space & ~page_mask) != (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_del_unaligned(v->shared, - section->mr->name, + trace_vhost_vdpa_listener_region_del_unaligned(s, section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -427,7 +421,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, iova = ROUND_UP(section->offset_within_address_space, page_size); llend = vhost_vdpa_section_end(section, page_mask); - trace_vhost_vdpa_listener_region_del(v->shared, iova, + trace_vhost_vdpa_listener_region_del(s, iova, int128_get64(int128_sub(llend, int128_one()))); if (int128_ge(int128_make64(iova), llend)) { @@ -436,7 +430,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); - if (v->shared->shadow_data) { + if (s->shadow_data) { const DMAMap *result; const void *vaddr = memory_region_get_ram_ptr(section->mr) + section->offset_within_region + @@ -446,37 +440,37 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, .size = int128_get64(llsize) - 1, }; - result = vhost_iova_tree_find_iova(v->shared->iova_tree, &mem_region); + result = vhost_iova_tree_find_iova(s->iova_tree, &mem_region); if (!result) { /* The memory listener map wasn't mapped */ return; } iova = result->iova; - vhost_iova_tree_remove(v->shared->iova_tree, *result); + vhost_iova_tree_remove(s->iova_tree, *result); } - vhost_vdpa_iotlb_batch_begin_once(v->shared); + vhost_vdpa_iotlb_batch_begin_once(s); /* * The unmap ioctl doesn't accept a full 64-bit. need to check it */ if (int128_eq(llsize, int128_2_64())) { llsize = int128_rshift(llsize, 1); - ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") = %d (%m)", - v, iova, int128_get64(llsize), ret); + s, iova, int128_get64(llsize), ret); } iova += int128_get64(llsize); } - ret = vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + ret = vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") = %d (%m)", - v, iova, int128_get64(llsize), ret); + s, iova, int128_get64(llsize), ret); } memory_region_unref(section->mr); @@ -591,7 +585,7 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp) v->dev = dev; dev->opaque = opaque ; - v->listener = vhost_vdpa_memory_listener; + v->shared->listener = vhost_vdpa_memory_listener; vhost_vdpa_init_svq(dev, v); error_propagate(&dev->migration_blocker, v->migration_blocker); @@ -754,7 +748,7 @@ static int vhost_vdpa_cleanup(struct vhost_dev *dev) } vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); - memory_listener_unregister(&v->listener); + memory_listener_unregister(&v->shared->listener); vhost_vdpa_svq_cleanup(dev); dev->opaque = NULL; @@ -1327,7 +1321,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) "IOMMU and try again"); return -1; } - memory_listener_register(&v->listener, dev->vdev->dma_as); + memory_listener_register(&v->shared->listener, dev->vdev->dma_as); return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); } @@ -1346,7 +1340,7 @@ static void vhost_vdpa_reset_status(struct vhost_dev *dev) vhost_vdpa_reset_device(dev); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER); - memory_listener_unregister(&v->listener); + memory_listener_unregister(&v->shared->listener); } static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base,