From nobody Mon Feb 9 08:57:03 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1657907108; cv=none; d=zohomail.com; s=zohoarc; b=NOVZk7FfUAY9IqIlmNe32CfXw1VVL9jrvZYHdd45/u/4eOsoHSvxw9cMtbDu8DHZ640CiUoj/FjN+FM286hvKptPpvXJx+NEI1Ns7XRP6b8Tlgx12IaYGcYZeLRuFThMfP3bkKn5s0b3MzL9MhQlzqeUOolWsnxjXlb9TKeXE+E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1657907108; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=RjJRmUJkLnrcMXEuZxhOFeU55tveeZ6VarDizyp9kEA=; b=Tf4HV4Xl7pYy6OVNKVDsyi7NgJ9hqntCOPwiBZs8s8e+yLoPSl/konZwYOKfHwk0iMNp9K2BvNj4ROKVu8KmAD0HHIeTtPXfRuMlIScSuJc6JE+baX0J/q+Z0kScU4IyKNIemIro0T4qY9CpV/CDAU+t/N0iKJiemUtPqy3fyUM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1657907108979152.18300134556227; Fri, 15 Jul 2022 10:45:08 -0700 (PDT) Received: from localhost ([::1]:43864 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oCPNC-0003PI-TM for importer@patchew.org; Fri, 15 Jul 2022 13:45:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46474) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oCOyc-00062S-Sm for qemu-devel@nongnu.org; Fri, 15 Jul 2022 13:19:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:35456) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oCOyb-00061h-D3 for qemu-devel@nongnu.org; Fri, 15 Jul 2022 13:19:42 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-638-CX5JhLhWPAqk52icjpKM0w-1; Fri, 15 Jul 2022 13:19:25 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9EE0F802D1C; Fri, 15 Jul 2022 17:19:24 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id BA96C40E8B04; Fri, 15 Jul 2022 17:19:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657905580; 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=RjJRmUJkLnrcMXEuZxhOFeU55tveeZ6VarDizyp9kEA=; b=Dq19nKIqCMBHSfpglZ0AVUbcbRW5bhXbDkOwxKSTkYaxH5fQH4HMP7YTLcjtLtQX7Y8kA5 iT7OiAk56P0WcnX+OY1ira922uVrnxu8GOt+qLnLZrJXdqZ32SWivKpyUsiI3foX72IAAu 6uZGOIjE5QeMEDDjpwurwDiyCeGTj8E= X-MC-Unique: CX5JhLhWPAqk52icjpKM0w-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Cornelia Huck , "Gonglei (Arei)" , Stefano Garzarella , Eli Cohen , "Michael S. Tsirkin" , Jason Wang , Stefan Hajnoczi , Cindy Lu , Zhu Lingshan , Parav Pandit , Markus Armbruster , Liuxiangdong , Laurent Vivier , Gautam Dawar , Eric Blake , Harpreet Singh Anand , Paolo Bonzini Subject: [PATCH v3 14/19] vdpa: Export vhost_vdpa_dma_map and unmap calls Date: Fri, 15 Jul 2022 19:18:29 +0200 Message-Id: <20220715171834.2666455-15-eperezma@redhat.com> In-Reply-To: <20220715171834.2666455-1-eperezma@redhat.com> References: <20220715171834.2666455-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, 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, 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1657907109871100001 Shadow CVQ will copy buffers on qemu VA, so we avoid TOCTOU attacks from the guest that could set a different state in qemu device model and vdpa device. To do so, it needs to be able to map these new buffers to the device. Signed-off-by: Eugenio P=C3=A9rez Acked-by: Jason Wang --- include/hw/virtio/vhost-vdpa.h | 4 ++++ hw/virtio/vhost-vdpa.c | 7 +++---- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index a29dbb3f53..7214eb47dc 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -39,4 +39,8 @@ typedef struct vhost_vdpa { VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; } VhostVDPA; =20 +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); + #endif diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0b13e98471..96997210be 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -71,8 +71,8 @@ static bool vhost_vdpa_listener_skipped_section(MemoryReg= ionSection *section, return false; } =20 -static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr si= ze, - void *vaddr, bool readonly) +int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size, + void *vaddr, bool readonly) { struct vhost_msg_v2 msg =3D {}; int fd =3D v->device_fd; @@ -97,8 +97,7 @@ static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwadd= r iova, hwaddr size, return ret; } =20 -static int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, - hwaddr size) +int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size) { struct vhost_msg_v2 msg =3D {}; int fd =3D v->device_fd; --=20 2.31.1