From patchwork Fri Nov 20 18:50:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11922027 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A913C56201 for ; Fri, 20 Nov 2020 19:14:37 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D617222240 for ; Fri, 20 Nov 2020 19:14:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="R5jQwOeP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D617222240 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51636 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kgBrf-0008Ee-Of for qemu-devel@archiver.kernel.org; Fri, 20 Nov 2020 14:14:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42024) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kgBa1-0007n2-9T for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:56:21 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:24475) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kgBZz-0008Ez-3z for qemu-devel@nongnu.org; Fri, 20 Nov 2020 13:56:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605898576; 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=VvYPxnElcsRqPRB3x32KT+7TZhu7baplHklcHyJ3ntU=; b=R5jQwOePsG/Z9alAQ1wSiuAFdyiu+2yRgf6WdWIHTHD/g/KoroWA2G1DQbKKvzizQH8EjF qn855O5M4BR9c6Me9gOj8V0kbgfH4Js+EMhEHX71bNyhdrcREVd5l27qMj5348uo+ZHIVe VBn8feger9GZbOYDMxoj1b6QgFwKkWA= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-387-mtyRzA7kNwS9vj-lQSG9zQ-1; Fri, 20 Nov 2020 13:56:15 -0500 X-MC-Unique: mtyRzA7kNwS9vj-lQSG9zQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F1189184215D; Fri, 20 Nov 2020 18:56:11 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-112-88.ams2.redhat.com [10.36.112.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id CB6785C1D5; Fri, 20 Nov 2020 18:55:53 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 21/27] vhost: Add vhost_virtqueue_memory_unmap Date: Fri, 20 Nov 2020 19:50:59 +0100 Message-Id: <20201120185105.279030-22-eperezma@redhat.com> In-Reply-To: <20201120185105.279030-1-eperezma@redhat.com> References: <20201120185105.279030-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Received-SPF: pass client-ip=216.205.24.124; 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 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, "Michael S. Tsirkin" , Jason Wang , Daniel Daly , virtualization@lists.linux-foundation.org, Liran Alon , Eli Cohen , Nitin Shrivastav , Alex Barba , Christophe Fontaine , Juan Quintela , Lee Ballard , Lars Ganrot , Rob Miller , Stefano Garzarella , Howard Cai , Parav Pandit , vm , Salil Mehta , Stephen Finucane , Xiao W Wang , Sean Mooney , Stefan Hajnoczi , Jim Harford , Dmytro Kazantsev , Siwei Liu , Harpreet Singh Anand , Michael Lilja , Max Gurtovoy Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is not a huge gain but helps in later changes. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost.c | 38 ++++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 18 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 9a3c580dcf..eafbbaa751 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -812,6 +812,21 @@ static int vhost_virtqueue_set_addr(struct vhost_dev *dev, return 0; } +static void vhost_virtqueue_memory_unmap(struct vhost_dev *dev, + struct vhost_virtqueue *vq, + bool used_is_dirty) +{ + if (vq->used) { + vhost_memory_unmap(dev, vq->used, vq->used_size, used_is_dirty, 0); + } + if (vq->avail) { + vhost_memory_unmap(dev, vq->avail, vq->avail_size, 0, 0); + } + if (vq->desc) { + vhost_memory_unmap(dev, vq->desc, vq->desc_size, 0, 0); + } +} + static int vhost_dev_set_features(struct vhost_dev *dev, bool enable_log) { @@ -1301,21 +1316,21 @@ static int vhost_virtqueue_start(struct vhost_dev *dev, vq->desc = vhost_memory_map(dev, a, &l, false); if (!vq->desc || l != s) { r = -ENOMEM; - goto fail_alloc_desc; + goto fail_alloc; } vq->avail_size = s = l = virtio_queue_get_avail_size(vdev, idx); vq->avail_phys = a = virtio_queue_get_avail_addr(vdev, idx); vq->avail = vhost_memory_map(dev, a, &l, false); if (!vq->avail || l != s) { r = -ENOMEM; - goto fail_alloc_avail; + goto fail_alloc; } vq->used_size = s = l = virtio_queue_get_used_size(vdev, idx); vq->used_phys = a = virtio_queue_get_used_addr(vdev, idx); vq->used = vhost_memory_map(dev, a, &l, true); if (!vq->used || l != s) { r = -ENOMEM; - goto fail_alloc_used; + goto fail_alloc; } r = vhost_virtqueue_set_addr(dev, vq, vhost_vq_index, dev->log_enabled); @@ -1358,15 +1373,7 @@ static int vhost_virtqueue_start(struct vhost_dev *dev, fail_vector: fail_kick: fail_alloc: - vhost_memory_unmap(dev, vq->used, virtio_queue_get_used_size(vdev, idx), - 0, 0); -fail_alloc_used: - vhost_memory_unmap(dev, vq->avail, virtio_queue_get_avail_size(vdev, idx), - 0, 0); -fail_alloc_avail: - vhost_memory_unmap(dev, vq->desc, virtio_queue_get_desc_size(vdev, idx), - 0, 0); -fail_alloc_desc: + vhost_virtqueue_memory_unmap(dev, vq, false); return r; } @@ -1408,12 +1415,7 @@ static void vhost_virtqueue_stop(struct vhost_dev *dev, vhost_vq_index); } - vhost_memory_unmap(dev, vq->used, virtio_queue_get_used_size(vdev, idx), - 1, virtio_queue_get_used_size(vdev, idx)); - vhost_memory_unmap(dev, vq->avail, virtio_queue_get_avail_size(vdev, idx), - 0, virtio_queue_get_avail_size(vdev, idx)); - vhost_memory_unmap(dev, vq->desc, virtio_queue_get_desc_size(vdev, idx), - 0, virtio_queue_get_desc_size(vdev, idx)); + vhost_virtqueue_memory_unmap(dev, vq, true); } static void vhost_eventfd_add(MemoryListener *listener,