From patchwork Fri Nov 20 18:50:48 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: 11921957 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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 952C7C63777 for ; Fri, 20 Nov 2020 18:54:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 41CBE22470 for ; Fri, 20 Nov 2020 18:54:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="C6sqfPQF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732060AbgKTSxp (ORCPT ); Fri, 20 Nov 2020 13:53:45 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:36712 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731358AbgKTSxo (ORCPT ); Fri, 20 Nov 2020 13:53:44 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605898423; 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=geMra6s2mk7qQGmiDf6FdjeAxAi7bQOlm3m+XgBp7eM=; b=C6sqfPQFxgXg0WLje1t+24Z6DDIPiM64FV0qbCn2GtvQIkQcm1kMOFl5OaK5ci4MNeOuUW 3eKuy+hoYNaM9zrr4A1OVoLgSddcDnYsFez2dz3OQrWNUQEUmV9hOCjNsuxi9F0EcxyjrG 1c7RdvcyCj+fK6i/O27b1iY4E3V3eXo= 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-307-O0I0LkrQMrGPImdL7SOirQ-1; Fri, 20 Nov 2020 13:53:39 -0500 X-MC-Unique: O0I0LkrQMrGPImdL7SOirQ-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 437D1801AF1; Fri, 20 Nov 2020 18:53:36 +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 97F395C1D5; Fri, 20 Nov 2020 18:53:24 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Lars Ganrot , virtualization@lists.linux-foundation.org, Salil Mehta , "Michael S. Tsirkin" , Liran Alon , Rob Miller , Max Gurtovoy , Alex Barba , Stefan Hajnoczi , Jim Harford , Jason Wang , Harpreet Singh Anand , Christophe Fontaine , vm , Daniel Daly , Michael Lilja , Stefano Garzarella , Nitin Shrivastav , Lee Ballard , Dmytro Kazantsev , Juan Quintela , kvm@vger.kernel.org, Howard Cai , Xiao W Wang , Sean Mooney , Parav Pandit , Eli Cohen , Siwei Liu , Stephen Finucane Subject: [RFC PATCH 10/27] vhost: Allocate shadow vring Date: Fri, 20 Nov 2020 19:50:48 +0100 Message-Id: <20201120185105.279030-11-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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Signed-off-by: Eugenio Pérez --- hw/virtio/vhost-sw-lm-ring.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost-sw-lm-ring.c b/hw/virtio/vhost-sw-lm-ring.c index cbf53965cd..cd7b5ba772 100644 --- a/hw/virtio/vhost-sw-lm-ring.c +++ b/hw/virtio/vhost-sw-lm-ring.c @@ -16,8 +16,11 @@ #include "qemu/event_notifier.h" typedef struct VhostShadowVirtqueue { + struct vring vring; EventNotifier hdev_notifier; VirtQueue *vq; + + vring_desc_t descs[]; } VhostShadowVirtqueue; static inline bool vhost_vring_should_kick(VhostShadowVirtqueue *vq) @@ -37,10 +40,12 @@ VhostShadowVirtqueue *vhost_sw_lm_shadow_vq(struct vhost_dev *dev, int idx) .index = idx }; VirtQueue *vq = virtio_get_queue(dev->vdev, idx); + unsigned num = virtio_queue_get_num(dev->vdev, idx); + size_t ring_size = vring_size(num, VRING_DESC_ALIGN_SIZE); VhostShadowVirtqueue *svq; int r; - svq = g_new0(VhostShadowVirtqueue, 1); + svq = g_malloc0(sizeof(*svq) + ring_size); svq->vq = vq; r = event_notifier_init(&svq->hdev_notifier, 0);