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Date:   Tue, 12 Jan 2021 13:55:22 -0800
From:   Linus Torvalds <>
To:     Will Deacon <>
Cc:     "Kirill A. Shutemov" <>,
        Linux Kernel Mailing List <>,
        Linux-MM <>,
        Linux ARM <>,
        Catalin Marinas <>,
        Jan Kara <>, Minchan Kim <>,
        Andrew Morton <>,
        "Kirill A . Shutemov" <>,
        Vinayak Menon <>,
        Hugh Dickins <>,
        Android Kernel Team <>
Subject: Re: [PATCH v2 0/3] Create 'old' ptes for faultaround mappings on
 arm64 with hardware access flag

On Tue, Jan 12, 2021 at 1:48 PM Will Deacon <> wrote:
> > And then if somebody actually needs to pass in "modified fault state"
> > (ie that whole "I'm doing fault-around, so I'll use multiple
> > addresses") they'd never modify the address in the fault info, they'd
> > just pass the address as an explicit argument (like most cases already
> > do - the "change addr or flags in vmf" is actually already _fairly_
> > rare).
> Alright then, I'll take another crack at this for v3 and see how far I
> get.

But please do keep it as a separate patch, and if it turns out to be
ugly for whatever reason, treat it as just a "maybe that would help"
suggestion rather than anything stronger..


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