From patchwork Tue Jul 23 17:00:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 1135781 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) 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; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com 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 45tPvc2qcCz9sBF for ; Wed, 24 Jul 2019 03:03:56 +1000 (AEST) Received: from localhost ([::1]:45832 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpyCf-00039V-Kq for incoming@patchwork.ozlabs.org; Tue, 23 Jul 2019 13:03:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42420) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hpyAF-00041g-SF for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:01:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hpyAE-000575-5E for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:01:23 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:22070 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hpyAD-000564-UQ for qemu-devel@nongnu.org; Tue, 23 Jul 2019 13:01:22 -0400 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x6NGkkZM088087 for ; Tue, 23 Jul 2019 13:01:21 -0400 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0b-001b2d01.pphosted.com with ESMTP id 2tx60prnv4-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 23 Jul 2019 13:01:21 -0400 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 23 Jul 2019 18:01:18 +0100 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x6NH1HMn18612706 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 23 Jul 2019 17:01:18 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DB29BBE056; Tue, 23 Jul 2019 17:01:17 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CCA72BE065; Tue, 23 Jul 2019 17:01:17 +0000 (GMT) Received: from localhost (unknown [9.53.179.212]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Tue, 23 Jul 2019 17:01:17 +0000 (GMT) From: Michael Roth To: qemu-devel@nongnu.org Date: Tue, 23 Jul 2019 12:00:44 -0500 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190723170104.4327-1-mdroth@linux.vnet.ibm.com> References: <20190723170104.4327-1-mdroth@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19072317-8235-0000-0000-00000EBD2AA2 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00011482; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000287; SDB=6.01236375; UDB=6.00651638; IPR=6.01017731; MB=3.00027856; MTD=3.00000008; XFM=3.00000015; UTC=2019-07-23 17:01:20 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19072317-8236-0000-0000-0000468424A4 Message-Id: <20190723170104.4327-17-mdroth@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-07-23_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=913 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1907230169 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH 16/36] vfio-ap: flag as compatible with balloon 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: Cornelia Huck , qemu-stable@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Cornelia Huck vfio-ap devices do not pin any pages in the host. Therefore, they are compatible with memory ballooning. Flag them as compatible, so both vfio-ap and a balloon can be used simultaneously. Cc: qemu-stable@nongnu.org Acked-by: Christian Borntraeger Tested-by: Tony Krowiak Reviewed-by: Halil Pasic Signed-off-by: Cornelia Huck (cherry picked from commit 1883e8fc8005e9ef452890a075bae98e8c432968) Signed-off-by: Michael Roth --- hw/vfio/ap.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c index 65de952f44..0a25f5e096 100644 --- a/hw/vfio/ap.c +++ b/hw/vfio/ap.c @@ -104,6 +104,14 @@ static void vfio_ap_realize(DeviceState *dev, Error **errp) vapdev->vdev.name = g_strdup_printf("%s", mdevid); vapdev->vdev.dev = dev; + /* + * vfio-ap devices operate in a way compatible with + * memory ballooning, as no pages are pinned in the host. + * This needs to be set before vfio_get_device() for vfio common to + * handle the balloon inhibitor. + */ + vapdev->vdev.balloon_allowed = true; + ret = vfio_get_device(vfio_group, mdevid, &vapdev->vdev, &local_err); if (ret) { goto out_get_dev_err;