linux-kernel - Re: [PATCH v2] arm64: mm: Move KPTI helpers to mmu.c

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Message-ID: <db8b48d3-6885-4d1b-b97b-e2beb23100d4@arm.com>
Date: Tue, 30 Sep 2025 16:24:38 +0200
From: Kevin Brodsky <kevin.brodsky@....com>
To: Will Deacon <will@...nel.org>, linux-arm-kernel@...ts.infradead.org
Cc: catalin.marinas@....com, kernel-team@...roid.com,
 linux-kernel@...r.kernel.org, Ryan Roberts <ryan.roberts@....com>,
 Ard Biesheuvel <ardb@...nel.org>,
 Anshuman Khandual <anshuman.khandual@....com>, Kees Cook <kees@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Suzuki K Poulose <suzuki.poulose@....com>, Yeoreum Yun <yeoreum.yun@....com>
Subject: Re: [PATCH v2] arm64: mm: Move KPTI helpers to mmu.c

On 25/09/2025 17:32, Will Deacon wrote:
> On Fri, 12 Sep 2025 08:39:08 +0100, Kevin Brodsky wrote:
>> create_kpti_ng_temp_pgd() is currently defined (as an alias) in
>> mmu.c without matching declaration in a header; instead cpufeature.c
>> makes its own declaration. This is clearly not pretty, and as commit
>> ceca927c86e6 ("arm64: mm: Fix CFI failure due to kpti_ng_pgd_alloc
>> function signature") showed, it also makes it very easy for the
>> prototypes to go out of sync.
>>
>> [...]
> Applied to arm64 (for-next/core), thanks!
>
> Please check that I resolved the conflicts correctly...
>
> [1/1] arm64: mm: Move KPTI helpers to mmu.c
>       https://git.kernel.org/arm64/c/200b0d25084d

Looks good, thanks!

- Kevin