linux-kernel - Re: [PATCH V3] arm64/mm: Intercept pfn changes in set_pte

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Message-Id: <167518251203.582976.5407379627860091879.b4-ty@arm.com>
Date:   Tue, 31 Jan 2023 16:28:38 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     linux-arm-kernel@...ts.infradead.org, will@...nel.org,
        Anshuman Khandual <anshuman.khandual@....com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3] arm64/mm: Intercept pfn changes in set_pte_at()

On Mon, 30 Jan 2023 17:44:57 +0530, Anshuman Khandual wrote:
> Changing pfn on a user page table mapped entry, without first going through
> break-before-make (BBM) procedure is unsafe. This just updates set_pte_at()
> to intercept such changes, via an updated pgattr_change_is_safe(). This new
> check happens via __check_racy_pte_update(), which has now been renamed as
> __check_safe_pte_update().
> 
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64/mm: Intercept pfn changes in set_pte_at()
      https://git.kernel.org/arm64/c/004fc58f917c

-- 
Catalin