From patchwork Tue Oct 11 10:41:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13003948 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 EF96BC433FE for ; Tue, 11 Oct 2022 12:37:06 +0000 (UTC) Received: from localhost ([::1]:41120 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oiEVM-0001kW-E0 for qemu-devel@archiver.kernel.org; Tue, 11 Oct 2022 08:37:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40774) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oiCiI-0004gM-8q for qemu-devel@nongnu.org; Tue, 11 Oct 2022 06:42:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:56808) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oiCiF-0007o8-C4 for qemu-devel@nongnu.org; Tue, 11 Oct 2022 06:42:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665484934; 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=EAle9ttS5SBoGxFcwKEbiwcJwY4Sj94Se9zB8jYE9qA=; b=h+nCEBvvyROVKSQXz8WHL3VvNBHZTSx8EADYY70//JExxPprIIeYMWC2i7idsjIPxpUSek DeiDWae9IdKg2zeZjikth3/pmuyuKTQ+J6/kcvpK4is8UUZkzXY/WCAVYfCuT9HOOZEkUf VolgJJJsy+CD51YhXCsTS+9URGOJubY= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-180-fO7xekBTOXCX88NesXaNxw-1; Tue, 11 Oct 2022 06:42:11 -0400 X-MC-Unique: fO7xekBTOXCX88NesXaNxw-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 05ECF299E74B; Tue, 11 Oct 2022 10:42:11 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.104]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4DB23492B09; Tue, 11 Oct 2022 10:42:07 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Gautam Dawar , "Michael S. Tsirkin" , Zhu Lingshan , Jason Wang , Si-Wei Liu , Paolo Bonzini , Eli Cohen , Parav Pandit , Laurent Vivier , Stefano Garzarella , Stefan Hajnoczi , "Gonglei (Arei)" , Cindy Lu , Liuxiangdong , Cornelia Huck , kvm@vger.kernel.org, Harpreet Singh Anand Subject: [PATCH v5 3/6] vdpa: Add asid parameter to vhost_vdpa_dma_map/unmap Date: Tue, 11 Oct 2022 12:41:51 +0200 Message-Id: <20221011104154.1209338-4-eperezma@redhat.com> In-Reply-To: <20221011104154.1209338-1-eperezma@redhat.com> References: <20221011104154.1209338-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" So the caller can choose which ASID is destined. No need to update the batch functions as they will always be called from memory listener updates at the moment. Memory listener updates will always update ASID 0, as it's the passthrough ASID. All vhost devices's ASID are 0 at this moment. Signed-off-by: Eugenio Pérez --- v5: * Solve conflict, now vhost_vdpa_svq_unmap_ring returns void * Change comment on zero initialization. v4: Add comment specifying behavior if device does not support _F_ASID v3: Deleted unneeded space --- include/hw/virtio/vhost-vdpa.h | 8 +++++--- hw/virtio/vhost-vdpa.c | 29 +++++++++++++++++++---------- net/vhost-vdpa.c | 6 +++--- hw/virtio/trace-events | 4 ++-- 4 files changed, 29 insertions(+), 18 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 1111d85643..6560bb9d78 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -29,6 +29,7 @@ typedef struct vhost_vdpa { int index; uint32_t msg_type; bool iotlb_batch_begin_sent; + uint32_t address_space_id; MemoryListener listener; struct vhost_vdpa_iova_range iova_range; uint64_t acked_features; @@ -42,8 +43,9 @@ typedef struct vhost_vdpa { VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; } VhostVDPA; -int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size, - void *vaddr, bool readonly); -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size); +int vhost_vdpa_dma_map(struct vhost_vdpa *v, 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, + hwaddr size); #endif diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index d966966131..ad663feacc 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -72,22 +72,24 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section, return false; } -int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size, - void *vaddr, bool readonly) +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 ret = 0; msg.type = v->msg_type; + msg.asid = asid; /* 0 if vdpa device does not support asid */ msg.iotlb.iova = iova; msg.iotlb.size = size; msg.iotlb.uaddr = (uint64_t)(uintptr_t)vaddr; 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.iotlb.iova, msg.iotlb.size, - msg.iotlb.uaddr, msg.iotlb.perm, msg.iotlb.type); + trace_vhost_vdpa_dma_map(v, fd, msg.type, msg.asid, msg.iotlb.iova, + msg.iotlb.size, msg.iotlb.uaddr, msg.iotlb.perm, + msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { error_report("failed to write, fd=%d, errno=%d (%s)", @@ -98,18 +100,24 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size, return ret; } -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size) +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 ret = 0; msg.type = v->msg_type; + /* + * 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. + */ + msg.asid = asid; msg.iotlb.iova = iova; msg.iotlb.size = size; msg.iotlb.type = VHOST_IOTLB_INVALIDATE; - trace_vhost_vdpa_dma_unmap(v, fd, msg.type, msg.iotlb.iova, + trace_vhost_vdpa_dma_unmap(v, fd, msg.type, msg.asid, msg.iotlb.iova, msg.iotlb.size, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) { @@ -229,7 +237,7 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, } vhost_vdpa_iotlb_batch_begin_once(v); - ret = vhost_vdpa_dma_map(v, iova, int128_get64(llsize), + ret = vhost_vdpa_dma_map(v, 0, iova, int128_get64(llsize), vaddr, section->readonly); if (ret) { error_report("vhost vdpa map fail!"); @@ -303,7 +311,7 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener, vhost_iova_tree_remove(v->iova_tree, *result); } vhost_vdpa_iotlb_batch_begin_once(v); - ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize)); + ret = vhost_vdpa_dma_unmap(v, 0, iova, int128_get64(llsize)); if (ret) { error_report("vhost_vdpa dma unmap error!"); } @@ -896,7 +904,7 @@ 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, result->iova, size); + r = vhost_vdpa_dma_unmap(v, 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; @@ -936,7 +944,8 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa *v, DMAMap *needle, return false; } - r = vhost_vdpa_dma_map(v, needle->iova, needle->size + 1, + r = vhost_vdpa_dma_map(v, v->address_space_id, needle->iova, + needle->size + 1, (void *)(uintptr_t)needle->translated_addr, needle->perm == IOMMU_RO); if (unlikely(r != 0)) { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index d84bb768cf..025fbbc41b 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -242,7 +242,7 @@ static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr) return; } - r = vhost_vdpa_dma_unmap(v, map->iova, map->size + 1); + r = vhost_vdpa_dma_unmap(v, v->address_space_id, map->iova, map->size + 1); if (unlikely(r != 0)) { error_report("Device cannot unmap: %s(%d)", g_strerror(r), r); } @@ -282,8 +282,8 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v, void *buf, size_t size, return r; } - r = vhost_vdpa_dma_map(v, map.iova, vhost_vdpa_net_cvq_cmd_page_len(), buf, - !write); + r = vhost_vdpa_dma_map(v, v->address_space_id, map.iova, + vhost_vdpa_net_cvq_cmd_page_len(), buf, !write); if (unlikely(r < 0)) { goto dma_map_err; } diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 20af2e7ebd..36e5ae75f6 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -26,8 +26,8 @@ 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, uint64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "vdpa:%p fd: %d msg_type: %"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, uint64_t iova, uint64_t size, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8 +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(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"