From mboxrd@z Thu Jan 1 00:00:00 1970 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 AB2BACA9EB6 for ; Wed, 23 Oct 2019 10:23:33 +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 76E7720663 for ; Wed, 23 Oct 2019 10:23:33 +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="dHeHkTA/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76E7720663 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]:59934 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNDng-0007JG-2f for qemu-devel@archiver.kernel.org; Wed, 23 Oct 2019 06:23:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40189) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNDWz-0004R6-1A for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNDWw-0002VN-Lm for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:06:16 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:42254 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNDWw-0002Ua-IL for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:06:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571825174; 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=o1ZWAZET2aCYr6F3lk3hGVyaMah3+lLXcCNuqtgSeG0=; b=dHeHkTA/cP0kqaLelhGd6GnyLhnSiQfQvMuYwPfVLD3nc7+jYDExTeZk9Mtz+PpSRD/FJk vtXfn2/uIYyXuB1MKJgkeHXSdh6ZZGydqJ0+USUejERh4TQoOeiuJ+0Mw6wbnL9W0la1ki 3P5c3DFCmYn6JxUackBBEShHB3XgmXY= 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-169-RBN4SAoMMrKpRGUTfQPEcA-1; Wed, 23 Oct 2019 06:06:10 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AA66647B; Wed, 23 Oct 2019 10:06:09 +0000 (UTC) Received: from localhost (unknown [10.36.118.70]) by smtp.corp.redhat.com (Postfix) with ESMTP id 492556061E; Wed, 23 Oct 2019 10:05:58 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v4 07/16] libqos: enforce Device Initialization order Date: Wed, 23 Oct 2019 11:04:16 +0100 Message-Id: <20191023100425.12168-8-stefanha@redhat.com> In-Reply-To: <20191023100425.12168-1-stefanha@redhat.com> References: <20191023100425.12168-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: RBN4SAoMMrKpRGUTfQPEcA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Fam Zheng , Laurent Vivier , Thomas Huth , qemu-block@nongnu.org, slp@redhat.com, "Michael S. Tsirkin" , Cornelia Huck , Stefan Hajnoczi , Christophe de Dinechin , Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" According to VIRTIO 1.1 "3.1.1 Driver Requirements: Device Initialization", configuration space and virtqueues cannot be accessed before features have been negotiated. Enforce this requirement. Signed-off-by: Stefan Hajnoczi --- v4: * Introduce bool d->features_negotiated so that tests can negotiate a 0 feature bit set in Legacy mode [Thomas] --- tests/libqos/virtio.h | 1 + tests/libqos/virtio.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/tests/libqos/virtio.h b/tests/libqos/virtio.h index a5c99fb3c9..0e8f823c7b 100644 --- a/tests/libqos/virtio.h +++ b/tests/libqos/virtio.h @@ -23,6 +23,7 @@ typedef struct QVirtioDevice { uint16_t device_type; uint64_t features; bool big_endian; + bool features_negotiated; } QVirtioDevice; =20 typedef struct QVirtQueue { diff --git a/tests/libqos/virtio.c b/tests/libqos/virtio.c index 4f7e6bb8a1..6049ff3b3e 100644 --- a/tests/libqos/virtio.c +++ b/tests/libqos/virtio.c @@ -15,21 +15,25 @@ =20 uint8_t qvirtio_config_readb(QVirtioDevice *d, uint64_t addr) { + g_assert_true(d->features_negotiated); return d->bus->config_readb(d, addr); } =20 uint16_t qvirtio_config_readw(QVirtioDevice *d, uint64_t addr) { + g_assert_true(d->features_negotiated); return d->bus->config_readw(d, addr); } =20 uint32_t qvirtio_config_readl(QVirtioDevice *d, uint64_t addr) { + g_assert_true(d->features_negotiated); return d->bus->config_readl(d, addr); } =20 uint64_t qvirtio_config_readq(QVirtioDevice *d, uint64_t addr) { + g_assert_true(d->features_negotiated); return d->bus->config_readq(d, addr); } =20 @@ -42,11 +46,13 @@ void qvirtio_set_features(QVirtioDevice *d, uint64_t fe= atures) { d->features =3D features; d->bus->set_features(d, features); + d->features_negotiated =3D true; } =20 QVirtQueue *qvirtqueue_setup(QVirtioDevice *d, QGuestAllocator *alloc, uint16_t index) { + g_assert_true(d->features_negotiated); return d->bus->virtqueue_setup(d, alloc, index); } =20 @@ -60,6 +66,7 @@ void qvirtio_reset(QVirtioDevice *d) { d->bus->set_status(d, 0); g_assert_cmphex(d->bus->get_status(d), =3D=3D, 0); + d->features_negotiated =3D false; } =20 void qvirtio_set_acknowledge(QVirtioDevice *d) --=20 2.21.0