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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 6BF8AC2D0DB for ; Tue, 28 Jan 2020 12:10:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2B9BF24688 for ; Tue, 28 Jan 2020 12:10:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B9BF24688 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B3E6F6B0003; Tue, 28 Jan 2020 07:10:19 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id AEEA16B0006; Tue, 28 Jan 2020 07:10:19 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A05206B0007; Tue, 28 Jan 2020 07:10:19 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0221.hostedemail.com [216.40.44.221]) by kanga.kvack.org (Postfix) with ESMTP id 8C12A6B0003 for ; Tue, 28 Jan 2020 07:10:19 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with SMTP id 323E321EA for ; Tue, 28 Jan 2020 12:10:19 +0000 (UTC) X-FDA: 76426925358.17.wave72_3cdc6d9006422 X-HE-Tag: wave72_3cdc6d9006422 X-Filterd-Recvd-Size: 6069 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Tue, 28 Jan 2020 12:10:17 +0000 (UTC) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00SC9BuP070700 for ; Tue, 28 Jan 2020 07:10:16 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2xrjq7cjhk-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 28 Jan 2020 07:10:16 -0500 Received: from localhost by e06smtp07.uk.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, 28 Jan 2020 12:10:02 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 00SCA17u41681050 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Jan 2020 12:10:01 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5A00D11C04A; Tue, 28 Jan 2020 12:10:01 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0B8F411C050; Tue, 28 Jan 2020 12:09:58 +0000 (GMT) Received: from linux.ibm.com (unknown [9.148.59.112]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 28 Jan 2020 12:09:57 +0000 (GMT) Date: Tue, 28 Jan 2020 14:09:56 +0200 From: Mike Rapoport To: Qian Cai Cc: Anshuman Khandual , Linux-MM , Andrew Morton , Vlastimil Babka , Greg Kroah-Hartman , Thomas Gleixner , Mike Rapoport , Jason Gunthorpe , Dan Williams , Peter Zijlstra , Michal Hocko , Mark Rutland , Mark Brown , Steven Price , Ard Biesheuvel , Masahiro Yamada , Kees Cook , Tetsuo Handa , Matthew Wilcox , Sri Krishna chowdary , Dave Hansen , Russell King - ARM Linux , Michael Ellerman , Paul Mackerras , Martin Schwidefsky , Heiko Carstens , "David S. Miller" , Vineet Gupta , James Hogan , Paul Burton , Ralf Baechle , "Kirill A . Shutemov" , Gerald Schaefer , Christophe Leroy , Ingo Molnar , linux-snps-arc@lists.infradead.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH V12] mm/debug: Add tests validating architecture page table helpers References: <1580174873-18117-1-git-send-email-anshuman.khandual@arm.com> <14882A91-17DE-4ABD-ABF2-08E7CCEDF660@lca.pw> <214c0d53-eb34-9b0c-2e4e-1aa005146331@arm.com> <016A776F-EFD9-4D2B-A3A9-788008617D95@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <016A776F-EFD9-4D2B-A3A9-788008617D95@lca.pw> X-TM-AS-GCONF: 00 x-cbid: 20012812-0028-0000-0000-000003D5276E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20012812-0029-0000-0000-000024996EC2 Message-Id: <20200128120956.GB6363@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-28_03:2020-01-24,2020-01-28 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 mlxlogscore=840 lowpriorityscore=0 mlxscore=0 clxscore=1015 phishscore=0 impostorscore=0 suspectscore=56 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1911200001 definitions=main-2001280098 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello Qian, On Mon, Jan 27, 2020 at 10:33:08PM -0500, Qian Cai wrote: > > > On Jan 27, 2020, at 10:06 PM, Anshuman Khandual wrote: > > > > enablement of this test (for the moment) but then the goal is to integrate all > > of them going forward. The test not only validates platform's adherence to the > > expected semantics from generic MM but also helps in keeping it that way during > > code changes in future as well. > > Another option maybe to get some decent arches on board first before merging this > thing, so it have more changes to catch regressions for developers who might run this. Aren't x86 and arm64 not decent enough? Even if this test could be used to detect regressions only on these two platforms, the test is valuable. -- Sincerely yours, Mike.