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Date:   Fri, 23 Apr 2021 16:51:31 +0200
From:   Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To:     Zhou Yanjie <zhouyanjie@wanyeetech.com>
Cc:     Huang Pei <huangpei@loongson.cn>, 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
Subject: Re: [PATCH] Revert "MIPS: make userspace mapping young by default".
Message-ID: <20210423145131.GA11112@alpha.franken.de>
References: <1618562868-91115-1-git-send-email-zhouyanjie@wanyeetech.com>
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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.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]