From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E1A83C3F2D2 for ; Mon, 2 Mar 2020 12:03:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE14B214DB for ; Mon, 2 Mar 2020 12:03:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727907AbgCBMDP (ORCPT ); Mon, 2 Mar 2020 07:03:15 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:52558 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727492AbgCBMDP (ORCPT ); Mon, 2 Mar 2020 07:03:15 -0500 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 022BxiAc028824; Mon, 2 Mar 2020 07:03:09 -0500 Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0a-001b2d01.pphosted.com with ESMTP id 2yfmwv5654-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 02 Mar 2020 07:03:09 -0500 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 022C14Vg016200; Mon, 2 Mar 2020 12:03:07 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma02wdc.us.ibm.com with ESMTP id 2yffk69qgd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 02 Mar 2020 12:03:07 +0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 022C36mI49021324 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 2 Mar 2020 12:03:06 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9259BBE059; Mon, 2 Mar 2020 12:03:06 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CF9BCBE056; Mon, 2 Mar 2020 12:03:01 +0000 (GMT) Received: from skywalker.linux.ibm.com (unknown [9.102.1.4]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 2 Mar 2020 12:02:58 +0000 (GMT) X-Mailer: emacs 27.0.90 (via feedmail 11-beta-1 I) From: "Aneesh Kumar K.V" To: Dan Williams , linux-nvdimm@lists.01.org Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH v3 2/5] libnvdimm/pfn: Prevent raw mode fallback if pfn-infoblock valid In-Reply-To: <158291747661.1609624.13504407869218712107.stgit@dwillia2-desk3.amr.corp.intel.com> References: <158291746615.1609624.7591692546429050845.stgit@dwillia2-desk3.amr.corp.intel.com> <158291747661.1609624.13504407869218712107.stgit@dwillia2-desk3.amr.corp.intel.com> Date: Mon, 02 Mar 2020 17:32:50 +0530 Message-ID: <87imjnrml1.fsf@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-03-02_03:2020-03-02,2020-03-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 phishscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 mlxlogscore=999 clxscore=1015 suspectscore=2 malwarescore=0 adultscore=0 bulkscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003020091 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dan Williams writes: > The EOPNOTSUPP return code from the pmem driver indicates that the > namespace has a configuration that may be valid, but the current kernel > does not support it. Expand this to all of the nd_pfn_validate() error > conditions after the infoblock has been verified as self consistent. > > This prevents exposing the namespace to I/O when the infoblock needs to > be corrected, or the system needs to be put into a different > configuration (like changing the page size on PowerPC). > Reviewed-by: Aneesh Kumar K.V > Cc: Aneesh Kumar K.V > Cc: Jeff Moyer > Signed-off-by: Dan Williams > --- > drivers/nvdimm/pfn_devs.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c > index a5c25cb87116..79fe02d6f657 100644 > --- a/drivers/nvdimm/pfn_devs.c > +++ b/drivers/nvdimm/pfn_devs.c > @@ -561,14 +561,14 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) > dev_dbg(&nd_pfn->dev, "align: %lx:%lx mode: %d:%d\n", > nd_pfn->align, align, nd_pfn->mode, > mode); > - return -EINVAL; > + return -EOPNOTSUPP; > } > } > > if (align > nvdimm_namespace_capacity(ndns)) { > dev_err(&nd_pfn->dev, "alignment: %lx exceeds capacity %llx\n", > align, nvdimm_namespace_capacity(ndns)); > - return -EINVAL; > + return -EOPNOTSUPP; > } > > /* > @@ -581,7 +581,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) > if (offset >= resource_size(&nsio->res)) { > dev_err(&nd_pfn->dev, "pfn array size exceeds capacity of %s\n", > dev_name(&ndns->dev)); > - return -EBUSY; > + return -EOPNOTSUPP; > } > > if ((align && !IS_ALIGNED(nsio->res.start + offset + start_pad, align)) > @@ -589,7 +589,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) > dev_err(&nd_pfn->dev, > "bad offset: %#llx dax disabled align: %#lx\n", > offset, align); > - return -ENXIO; > + return -EOPNOTSUPP; > } > > return 0; > _______________________________________________ > Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org > To unsubscribe send an email to linux-nvdimm-leave@lists.01.org