From patchwork Wed Jan 16 18:31:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Xu X-Patchwork-Id: 10766725 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B329913BF for ; Wed, 16 Jan 2019 18:34:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A3DE02E775 for ; Wed, 16 Jan 2019 18:34:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 982742E7CA; Wed, 16 Jan 2019 18:34:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 496CF2E775 for ; Wed, 16 Jan 2019 18:34:10 +0000 (UTC) Received: from localhost ([127.0.0.1]:44151 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gjq0v-0004oI-Hs for patchwork-qemu-devel@patchwork.kernel.org; Wed, 16 Jan 2019 13:34:09 -0500 Received: from eggs.gnu.org ([209.51.188.92]:46800) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gjpyp-00036t-7i for qemu-devel@nongnu.org; Wed, 16 Jan 2019 13:32:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gjpyk-0007ML-Jd for qemu-devel@nongnu.org; Wed, 16 Jan 2019 13:31:59 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44500) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gjpyk-0007LB-Cu for qemu-devel@nongnu.org; Wed, 16 Jan 2019 13:31:54 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 9F79E58E54; Wed, 16 Jan 2019 18:31:53 +0000 (UTC) Received: from dell-per430-12.lab.eng.pek2.redhat.com (dell-per430-12.lab.eng.pek2.redhat.com [10.73.196.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1187B5C1B4; Wed, 16 Jan 2019 18:31:50 +0000 (UTC) From: wexu@redhat.com To: wexu@redhat.com, tiwei.bie@intel.com, qemu-devel@nongnu.org Date: Wed, 16 Jan 2019 13:31:09 -0500 Message-Id: <1547663480-547-5-git-send-email-wexu@redhat.com> In-Reply-To: <1547663480-547-1-git-send-email-wexu@redhat.com> References: <1547663480-547-1-git-send-email-wexu@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Wed, 16 Jan 2019 18:31:53 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 04/15] virtio: add memory region init for packed ring X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jasowang@redhat.com, maxime.coquelin@redhat.com, jfreiman@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Wei Xu Signed-off-by: Wei Xu --- hw/virtio/virtio.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 112845c..454da3d 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -156,10 +156,8 @@ static void virtio_init_region_cache(VirtIODevice *vdev, int n) VRingMemoryRegionCaches *old = vq->vring.caches; VRingMemoryRegionCaches *new = NULL; hwaddr addr, size; - int event_size; int64_t len; - - event_size = virtio_vdev_has_feature(vq->vdev, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0; + bool attr; addr = vq->vring.desc; if (!addr) { @@ -167,14 +165,16 @@ static void virtio_init_region_cache(VirtIODevice *vdev, int n) } new = g_new0(VRingMemoryRegionCaches, 1); size = virtio_queue_get_desc_size(vdev, n); + attr = virtio_vdev_has_feature(vq->vdev, VIRTIO_F_RING_PACKED) ? + true : false; len = address_space_cache_init(&new->desc, vdev->dma_as, - addr, size, false); + addr, size, attr); if (len < size) { virtio_error(vdev, "Cannot map desc"); goto err_desc; } - size = virtio_queue_get_used_size(vdev, n) + event_size; + size = virtio_queue_get_used_size(vdev, n); len = address_space_cache_init(&new->used, vdev->dma_as, vq->vring.used, size, true); if (len < size) { @@ -182,7 +182,7 @@ static void virtio_init_region_cache(VirtIODevice *vdev, int n) goto err_used; } - size = virtio_queue_get_avail_size(vdev, n) + event_size; + size = virtio_queue_get_avail_size(vdev, n); len = address_space_cache_init(&new->avail, vdev->dma_as, vq->vring.avail, size, false); if (len < size) {