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Date:   Wed, 27 May 2020 09:05:41 +0800
From:   maobibo <>
To:     Andrew Morton <>
Cc:     Thomas Bogendoerfer <>,
        Jiaxun Yang <>,
        Huacai Chen <>,
        Paul Burton <>,
        Dmitry Korotin <>,
        Philippe Mathieu-Daudé <>,
        Stafford Horne <>,
        Steven Price <>,
        Anshuman Khandual <>,,,
        Mike Rapoport <>,
        Sergei Shtylyov <>,
        "Maciej W. Rozycki" <>,,
        David Hildenbrand <>
Subject: Re: [PATCH v6 3/4] mm/memory.c: Add memory read privilege on page
 fault handling

On 05/26/2020 05:44 AM, Andrew Morton wrote:
> On Mon, 25 May 2020 10:52:39 +0800 Bibo Mao <> wrote:
>> Here add pte_sw_mkyoung function to make page readable on MIPS
>> platform during page fault handling. This patch improves page
>> fault latency about 10% on my MIPS machine with lmbench
>> lat_pagefault case.
>> It is noop function on other arches, there is no negative
>> influence on those architectures.
> Acked-by: Andrew Morton <>
> Should I take these, or would the mips tree be preferred?  I'm OK
> either way, but probably the MIPS tree would be better?
Thanks for reviewing again and again.
This patch is based on mips-next, maybe MIPS tree will be better.

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