All of lore.kernel.org
 help / color / mirror / Atom feed
From: Andrew Morton <akpm@linux-foundation.org>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, 周琰杰 <zhouyanjie@wanyeetech.com>
Subject: Re: [PATCH] Revert "MIPS: make userspace mapping young by default"
Date: Wed, 26 May 2021 13:49:42 -0700	[thread overview]
Message-ID: <20210526134942.2bf26d5cf5a9243583aec131@linux-foundation.org> (raw)
In-Reply-To: <20210526094335.92948-1-tsbogend@alpha.franken.de>

On Wed, 26 May 2021 11:43:35 +0200 Thomas Bogendoerfer <tsbogend@alpha.franken.de> wrote:

> This reverts commit f685a533a7fab35c5d069dcd663f59c8e4171a75.
> 
> MIPS cache flush logic needs to know whether the mapping was already
> established to decide how to flush caches. This is done by checking the
> valid bit in the PTE. The commit above breaks this logic by setting
> the valid in the PTE in new mappings, which causes kernel crashes.

Thanks.  I added

Fixes: f685a533a7f ("MIPS: make userspace mapping young by default")
Cc: <stable@vger.kernel.org>

  reply	other threads:[~2021-05-26 20:49 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-26  9:43 [PATCH] Revert "MIPS: make userspace mapping young by default" Thomas Bogendoerfer
2021-05-26 20:49 ` Andrew Morton [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-04-16  8:47 周琰杰 (Zhou Yanjie)
2021-04-16  9:20 ` 黄沛
     [not found]   ` <ae06522f-eda8-96d1-6f58-072905afa65c@wanyeetech.com>
2021-04-19  4:56     ` Huang Pei
2021-04-19 14:21       ` Zhou Yanjie
2021-04-20  2:48         ` Huang Pei
2021-04-20 13:47           ` Zhou Yanjie
2021-04-20 14:03           ` Zhou Yanjie
2021-04-23 14:51             ` Thomas Bogendoerfer
2021-04-24 11:24               ` Zhou Yanjie
2021-04-26 13:11                 ` Huang Pei
2021-04-29 18:04                   ` Thomas Bogendoerfer
2021-04-30  2:07                     ` Huang Pei
2021-05-08  8:48                     ` Zhou Yanjie

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210526134942.2bf26d5cf5a9243583aec131@linux-foundation.org \
    --to=akpm@linux-foundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mips@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=tsbogend@alpha.franken.de \
    --cc=zhouyanjie@wanyeetech.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.