From nobody Mon Feb 9 19:07:33 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1571825511; cv=none; d=zoho.com; s=zohoarc; b=Tai5gmmRIBXwnmpFpYJsmSNwEPv2m+1FNnua9yFO72BpqTp/IdvbXCE0Kz7HxMnETa43kATyqDhP5EaAec6sjRBliIrLUCqPVga/7b/+MPzjbtt+8Fx90XxEnFfY5A9tDiB4Gt2Dy4cPqTKMK8mXHd9HekT0ju0oFTAJSYwNlSg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1571825511; 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=KplCgtoUX18u/KqaA+dv9ZMhPI8gImaSkBohz9iZAQc=; b=AZtkRRfLbbyfhRE6OY91bNrYy5OTADqt9bzxDdmK49QcpGdPFfeznwq/xyEJ5yk3CriuRCWFAuB6EhrXZWzblhGSLyaNb2R7JQxnJZaMJwlRGofXCWD62wtXReO6tMhO8WmhSKb2le6/SzClqtMFv1bLfS5Tc5IZR4kkhtxZfjM= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1571825511508931.1905528100266; Wed, 23 Oct 2019 03:11:51 -0700 (PDT) Received: from localhost ([::1]:59786 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNDcH-000752-D3 for importer@patchew.org; Wed, 23 Oct 2019 06:11:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40022) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNDWd-0004J3-NX for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:05:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNDWc-0002Fo-3W for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:05:55 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:37210 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNDWb-0001ar-Ur for qemu-devel@nongnu.org; Wed, 23 Oct 2019 06:05:54 -0400 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-294-1YLClgQhPs6IwtrjbxQPUA-1; Wed, 23 Oct 2019 06:04:54 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9EE201005500; Wed, 23 Oct 2019 10:04:50 +0000 (UTC) Received: from localhost (unknown [10.36.118.70]) by smtp.corp.redhat.com (Postfix) with ESMTP id BF1531001B33; Wed, 23 Oct 2019 10:04:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571825098; 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=KplCgtoUX18u/KqaA+dv9ZMhPI8gImaSkBohz9iZAQc=; b=FxhnoL0fTceZd9dnkBoyZNm0hfLpoDKUfbnAO5VP3r5XHdfBDty6InrZ9ddCun0aNxA/6T r1b9Kx5vUtfYWQa+VoyNirGmTDgNChaAP9Vn78AFrpA6MLav0eK9OYKUoDbOw6QizrVyiM acMjzRunpMhkTPQ8lC4eDGlVJrig/AU= From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v4 01/16] tests/virtio-blk-test: read config space after feature negotiation Date: Wed, 23 Oct 2019 11:04:10 +0100 Message-Id: <20191023100425.12168-2-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 2.84 on 10.5.11.22 X-MC-Unique: 1YLClgQhPs6IwtrjbxQPUA-1 X-Mimecast-Spam-Score: 0 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: 205.139.110.61 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The VIRTIO Configuration Space cannot be accessed before device feature bits have been read because a driver doesn't know the endianness until it has checked VIRTIO_F_VERSION_1. Fix this problem in preparation for VIRTIO 1.0 support. Signed-off-by: Stefan Hajnoczi Reviewed-by: Thomas Huth --- tests/virtio-blk-test.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c index ed13167392..f6674fb233 100644 --- a/tests/virtio-blk-test.c +++ b/tests/virtio-blk-test.c @@ -125,10 +125,6 @@ static void test_basic(QVirtioDevice *dev, QGuestAlloc= ator *alloc, char *data; QTestState *qts =3D global_qtest; =20 - capacity =3D qvirtio_config_readq(dev, 0); - - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -136,6 +132,9 @@ static void test_basic(QVirtioDevice *dev, QGuestAlloca= tor *alloc, (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + qvirtio_set_driver_ok(dev); =20 /* Write and read with 3 descriptor layout */ @@ -359,9 +358,6 @@ static void indirect(void *obj, void *u_data, QGuestAll= ocator *t_alloc) char *data; QTestState *qts =3D global_qtest; =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); g_assert_cmphex(features & (1u << VIRTIO_RING_F_INDIRECT_DESC), !=3D, = 0); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | @@ -369,6 +365,9 @@ static void indirect(void *obj, void *u_data, QGuestAll= ocator *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtio_set_driver_ok(dev); =20 @@ -434,8 +433,16 @@ static void config(void *obj, void *data, QGuestAlloca= tor *t_alloc) QVirtioBlk *blk_if =3D obj; QVirtioDevice *dev =3D blk_if->vdev; int n_size =3D TEST_IMAGE_SIZE / 2; + uint64_t features; uint64_t capacity; =20 + features =3D qvirtio_get_features(dev); + features =3D features & ~(QVIRTIO_F_BAD_FEATURE | + (1u << VIRTIO_RING_F_INDIRECT_DESC) | + (1u << VIRTIO_RING_F_EVENT_IDX) | + (1u << VIRTIO_BLK_F_SCSI)); + qvirtio_set_features(dev, features); + capacity =3D qvirtio_config_readq(dev, 0); g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); =20 @@ -475,9 +482,6 @@ static void msix(void *obj, void *u_data, QGuestAllocat= or *t_alloc) qpci_msix_enable(pdev->pdev); qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0); =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -485,6 +489,9 @@ static void msix(void *obj, void *u_data, QGuestAllocat= or *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1); =20 @@ -584,9 +591,6 @@ static void idx(void *obj, void *u_data, QGuestAllocato= r *t_alloc) qpci_msix_enable(pdev->pdev); qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0); =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -594,6 +598,9 @@ static void idx(void *obj, void *u_data, QGuestAllocato= r *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1); =20 --=20 2.21.0