From nobody Thu Nov 13 07:21:07 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.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; spf=pass (zohomail.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=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1578658739; cv=none; d=zohomail.com; s=zohoarc; b=cfVOApsJrjigDi/FzO1Kn1mieG0++OoMSq6zW/ZfYfpasMcjSr0DXAe0OIQ+A12e0lYU+dHHjGRX2dPAADOZRMVTmn94hTSUxoQu6Yh73DMn7hBgz3uA3A3Yuhxyr5IMecVhb5qWup+0AGKsoupSbQqdr+pMYDJkQo5x3Ri1Y1Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1578658739; h=Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:Sender:Subject:To; bh=QtNY5EByhzl1mfkGxu2aV9RIIAosXcZnVpFvV9fXsNY=; b=ZktMDde2q3QbI06upQCOgaQe9V8ihGc02T5mN4ITLASo57TwT69pkD6l2q+3vT8a0EiXC1gMM724W9ZF5afRrDqgI4aOcSZvcSXsNpKNV6BzbQFWMmJuJYLTbIMFrerGewRR4ZqEFKSCNZa8MS7vmuZ4L8jS/mDGBNcQR1ggO3I= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.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 157865873996038.97331528864402; Fri, 10 Jan 2020 04:18:59 -0800 (PST) Received: from localhost ([::1]:44744 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iptFi-0003Hu-AO for importer@patchew.org; Fri, 10 Jan 2020 07:18:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:47190) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iptEu-0002ef-Le for qemu-devel@nongnu.org; Fri, 10 Jan 2020 07:18:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iptEs-00050L-TG for qemu-devel@nongnu.org; Fri, 10 Jan 2020 07:18:07 -0500 Received: from mga09.intel.com ([134.134.136.24]:39729) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iptEs-0004hK-H7 for qemu-devel@nongnu.org; Fri, 10 Jan 2020 07:18:06 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jan 2020 04:18:02 -0800 Received: from he.bj.intel.com ([10.238.157.85]) by orsmga002.jf.intel.com with ESMTP; 10 Jan 2020 04:18:01 -0800 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,416,1571727600"; d="scan'208";a="237450083" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH] vhost-user-blk: reset the device if supported Date: Fri, 10 Jan 2020 20:22:03 +0800 Message-Id: <20200110122203.6735-1-yang.zhong@intel.com> X-Mailer: git-send-email 2.17.1 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.24 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: yang.zhong@intel.com, pbonzini@redhat.com, stefanha@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" As the vhost-user-scsi did in f04724, if the vhost-user-blk backend supports the VHOST_USER_F_RESET_DEVICE protocol feature, then the device can be reset when requested. If this feature is not supported, this reset will directly return. Signed-off-by: Yang Zhong --- hw/block/vhost-user-blk.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 63da9bb619..16ddc9b70c 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -50,6 +50,10 @@ static const int user_feature_bits[] =3D { VHOST_INVALID_FEATURE_BIT }; =20 +enum VhostUserProtocolFeature { + VHOST_USER_PROTOCOL_F_RESET_DEVICE =3D 13, +}; + static void vhost_user_blk_update_config(VirtIODevice *vdev, uint8_t *conf= ig) { VHostUserBlk *s =3D VHOST_USER_BLK(vdev); @@ -290,8 +294,23 @@ static void vhost_user_blk_handle_output(VirtIODevice = *vdev, VirtQueue *vq) static void vhost_user_blk_reset(VirtIODevice *vdev) { VHostUserBlk *s =3D VHOST_USER_BLK(vdev); + struct vhost_dev *dev =3D &s->dev; =20 vhost_dev_free_inflight(s->inflight); + + /* + * Historically, reset was not implemented so only reset devices + * that are expecting it. + */ + if (!virtio_has_feature(dev->protocol_features, + VHOST_USER_PROTOCOL_F_RESET_DEVICE)) { + return; + } + + if (dev->vhost_ops->vhost_reset_device) { + dev->vhost_ops->vhost_reset_device(dev); + } + } =20 static int vhost_user_blk_connect(DeviceState *dev) --=20 2.17.1