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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 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 8E4CFC43460 for ; Sat, 24 Apr 2021 11:24:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65F5961574 for ; Sat, 24 Apr 2021 11:24:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233643AbhDXLZJ (ORCPT ); Sat, 24 Apr 2021 07:25:09 -0400 Received: from out28-98.mail.aliyun.com ([115.124.28.98]:39394 "EHLO out28-98.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231823AbhDXLZD (ORCPT ); Sat, 24 Apr 2021 07:25:03 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.08041266|-1;CH=green;DM=|CONTINUE|false|;DS=CONTINUE|ham_news_journal|0.0827475-0.00385465-0.913398;FP=0|0|0|0|0|-1|-1|-1;HT=ay29a033018047211;MF=zhouyanjie@wanyeetech.com;NM=1;PH=DS;RN=16;RT=16;SR=0;TI=SMTPD_---.K3L4-c1_1619263461; Received: from 192.168.88.128(mailfrom:zhouyanjie@wanyeetech.com fp:SMTPD_---.K3L4-c1_1619263461) by smtp.aliyun-inc.com(10.147.44.129); Sat, 24 Apr 2021 19:24:23 +0800 Subject: Re: [PATCH] Revert "MIPS: make userspace mapping young by default". To: Thomas Bogendoerfer Cc: Huang Pei , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, paul.burton@mips.com, paul@crapouillou.net, siyanteng@loongson.cn, ira.weiny@intel.com, yangtiezhu@loongson.cn, jun.jiang@ingenic.com, dongsheng.qiu@ingenic.com, aric.pzqi@ingenic.com, rick.tyliu@ingenic.com, sernia.zhou@foxmail.com, sihui.liu@ingenic.com References: <1618562868-91115-1-git-send-email-zhouyanjie@wanyeetech.com> <20210416092003.5754967.19768.9603@loongson.cn> <20210419045610.frhzxskec47s5rmq@ambrosehua-HP-xw6600-Workstation> <13e37741-c1b4-2aae-471e-0790adc8db59@wanyeetech.com> <20210420024818.r6jf243oglb2ywbr@ambrosehua-HP-xw6600-Workstation> <20210423145131.GA11112@alpha.franken.de> From: Zhou Yanjie Message-ID: <6d307cf6-0ed5-e9f9-ae1e-8f2e28b23311@wanyeetech.com> Date: Sat, 24 Apr 2021 19:24:21 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20210423145131.GA11112@alpha.franken.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Thomas, On 2021/4/23 下午10:51, Thomas Bogendoerfer wrote: > On Tue, Apr 20, 2021 at 10:03:01PM +0800, Zhou Yanjie wrote: >> Sorry for my carelessness, the log in the previous email was wrong, please >> check the log in this email. >> >> [   53.684067] --- pte 1 = 07698685 > any chance to print the virtual address to this pte ? > >> [   53.687376] --- pte 3 = 07698685 >> [   53.737175] --- pte 1 = 07699685 >> [   53.740412] --- pte 3 = 07699685 >> [   53.744064] --- pte 1 = 076c3685 >> [..] > could you print PTE, which faults ? And what is mapped there ? > > > so far I haven't seen any ill-effects of the (bisected ?) patch. > The problem I have with reverting is that IMHO we re-introduce the bug, > which this patch fixed. Fortunately, Mr. Huang Pei and I are in the same city. We have done off-line communication, and he is very generous to help troubleshoot the problem. Thanks and best regards! > > Thomas. >