Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW

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Subject: Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 25 Feb 2025 20:06:02 -0800
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-tip-commits@xxxxxxxxxxxxxxx, kernel test robot <oliver.sang@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, x86@xxxxxxxxxx
In-reply-to: <Z76R6ESSwiYipQVn@casper.infradead.org>
References: <174051422675.10177.13226545170101706336.tip-bot2@tip-bot2> <CAHk-=whfkWMkQOVMCxqcJ6+GWdSZTLcyDUmSRCVHV4BtbwDrHA@mail.gmail.com> <Z76APkysrjgHjgR2@casper.infradead.org> <CAHk-=wj+VBV5kBMfXYNOb+aLt3WJqMKFT0wU=KaV3R12NvN5TA@mail.gmail.com> <Z76R6ESSwiYipQVn@casper.infradead.org>

On Tue, 25 Feb 2025 at 20:00, Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
>
> I think the entire point of this file is to manipulate kernel mappings.

Very likely. But just looking at the patch, it was very non-obvious.

           Linus

Follow-Ups:
- Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: Ingo Molnar

References:
- [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: tip-bot2 for Matthew Wilcox (Oracle)
- Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: Linus Torvalds
- Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: Matthew Wilcox
- Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: Linus Torvalds
- Re: [tip: x86/mm] x86/mm: Clear _PAGE_DIRTY when we clear _PAGE_RW
  - From: Matthew Wilcox

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