From patchwork Tue Feb 23 14:46:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 1443511 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=U3RTwlG3; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4DlMQR0xM4z9sVS for ; Wed, 24 Feb 2021 01:49:35 +1100 (AEDT) Received: from localhost ([::1]:52896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lEZ0H-00069h-2x for incoming@patchwork.ozlabs.org; Tue, 23 Feb 2021 09:49:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42554) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lEYzq-00065w-5t for qemu-devel@nongnu.org; Tue, 23 Feb 2021 09:49:06 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:48581) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lEYzn-0002r5-6H for qemu-devel@nongnu.org; Tue, 23 Feb 2021 09:49:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614091742; 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=epNbZK0R37t9TJfruEcwMWO3mwlxvKJUXYHn7CqV7Q8=; b=U3RTwlG30cxAI6UqfECbPfYoTdUb+BlNjM6W/j2uDi8ljdUpuElnhu2LLEa/x2IpmFJKP8 Q6NDd4x6Vtaf16b3hcq7P0Eo0x7n8B9oz5o8rKVlO0QE5b3sYzvDVFakZn+V6FXpZ6wpbs u2AYntXcg8CiDqgP1fRuv62+PfYlGNo= 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-262-URm9yOB3MK2onVIM-jCAhQ-1; Tue, 23 Feb 2021 09:49:01 -0500 X-MC-Unique: URm9yOB3MK2onVIM-jCAhQ-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 3BF7FC7451; Tue, 23 Feb 2021 14:47:11 +0000 (UTC) Received: from localhost (ovpn-114-203.ams2.redhat.com [10.36.114.203]) by smtp.corp.redhat.com (Postfix) with ESMTP id 30C2A5C8BE; Tue, 23 Feb 2021 14:47:02 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH v3 01/12] vhost-user-blk: fix blkcfg->num_queues endianness Date: Tue, 23 Feb 2021 14:46:42 +0000 Message-Id: <20210223144653.811468-2-stefanha@redhat.com> In-Reply-To: <20210223144653.811468-1-stefanha@redhat.com> References: <20210223144653.811468-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 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, MIME_BASE64_TEXT=1.741, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=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: Kevin Wolf , Laurent Vivier , Thomas Huth , qemu-block@nongnu.org, "Michael S. Tsirkin" , Peter Maydell , qemu-stable@nongnu.org, Coiby Xu , Max Reitz , Stefan Hajnoczi , Paolo Bonzini , Raphael Norwitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Treat the num_queues field as virtio-endian. On big-endian hosts the vhost-user-blk num_queues field was in the wrong endianness. Move the blkcfg.num_queues store operation from realize to vhost_user_blk_update_config() so feature negotiation has finished and we know the endianness of the device. VIRTIO 1.0 devices are little-endian, but in case someone wants to use legacy VIRTIO we support all endianness cases. Cc: qemu-stable@nongnu.org Signed-off-by: Stefan Hajnoczi Reviewed-by: Raphael Norwitz Reviewed-by: Michael S. Tsirkin --- hw/block/vhost-user-blk.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index da4fbf9084..b870a50e6b 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -54,6 +54,9 @@ static void vhost_user_blk_update_config(VirtIODevice *vdev, uint8_t *config) { VHostUserBlk *s = VHOST_USER_BLK(vdev); + /* Our num_queues overrides the device backend */ + virtio_stw_p(vdev, &s->blkcfg.num_queues, s->num_queues); + memcpy(config, &s->blkcfg, sizeof(struct virtio_blk_config)); } @@ -491,10 +494,6 @@ reconnect: goto reconnect; } - if (s->blkcfg.num_queues != s->num_queues) { - s->blkcfg.num_queues = s->num_queues; - } - return; virtio_err: