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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 3 Jun 2019 12:51:05 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x53Bp4TO59768908 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 3 Jun 2019 11:51:04 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 398195204E; Mon, 3 Jun 2019 11:51:04 +0000 (GMT) Received: from dyn-9-152-212-90.boeblingen.de.ibm.com (unknown [9.152.212.90]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 6A9A252050; Mon, 3 Jun 2019 11:51:03 +0000 (GMT) Date: Mon, 3 Jun 2019 13:51:02 +0200 (CEST) From: Sebastian Ott X-X-Sender: sebott@schleppi To: Zhen Lei cc: Jean-Philippe Brucker , John Garry , Robin Murphy , Will Deacon , Joerg Roedel , Jonathan Corbet , linux-doc , Gerald Schaefer , Martin Schwidefsky , Heiko Carstens , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Tony Luck , Fenghua Yu , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , David Woodhouse , iommu , linux-kernel , linux-s390 , linuxppc-dev , x86 , linux-ia64 , Hanjun Guo Subject: Re: [PATCH v8 3/7] s390/pci: add support for IOMMU default DMA mode build options In-Reply-To: <20190530034831.4184-4-thunder.leizhen@huawei.com> References: <20190530034831.4184-1-thunder.leizhen@huawei.com> <20190530034831.4184-4-thunder.leizhen@huawei.com> User-Agent: Alpine 2.21 (LFD 202 2017-01-01) Organization: =?ISO-8859-15?Q?=22IBM_Deutschland_Research_&_Development_GmbH?= =?ISO-8859-15?Q?_=2F_Vorsitzende_des_Aufsichtsrats=3A_Matthias?= =?ISO-8859-15?Q?_Hartmann_Gesch=E4ftsf=FChrung=3A_Dirk_Wittkopp?= =?ISO-8859-15?Q?_Sitz_der_Gesellschaft=3A_B=F6blingen_=2F_Reg?= =?ISO-8859-15?Q?istergericht=3A_Amtsgericht_Stuttgart=2C_HRB_2432?= =?ISO-8859-15?Q?94=22?= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-TM-AS-GCONF: 00 x-cbid: 19060311-0016-0000-0000-000002832141 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19060311-0017-0000-0000-000032E02A71 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-03_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=635 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906030087 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 30 May 2019, Zhen Lei wrote: > The default DMA mode is LAZY on s390, this patch make it can be set to > STRICT at build time. It can be overridden by boot option. > > There is no functional change. > > Signed-off-by: Zhen Lei Acked-by: Sebastian Ott