linux-kernel - Re: [RFC PATCH v1 02/57] vmlinux: Align to PAGE_SIZE

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Message-ID: <0e7c6bd0-b4a0-4afe-22ff-73239bd86943@gentwo.org>
Date: Mon, 14 Oct 2024 09:50:21 -0700 (PDT)
From: "Christoph Lameter (Ampere)" <cl@...two.org>
To: Ryan Roberts <ryan.roberts@....com>
cc: Andrew Morton <akpm@...ux-foundation.org>, 
    Anshuman Khandual <anshuman.khandual@....com>, 
    Ard Biesheuvel <ardb@...nel.org>, Arnd Bergmann <arnd@...db.de>, 
    Catalin Marinas <catalin.marinas@....com>, 
    David Hildenbrand <david@...hat.com>, Dennis Zhou <dennis@...nel.org>, 
    Greg Marsden <greg.marsden@...cle.com>, Ivan Ivanov <ivan.ivanov@...e.com>, 
    Kalesh Singh <kaleshsingh@...gle.com>, Marc Zyngier <maz@...nel.org>, 
    Mark Rutland <mark.rutland@....com>, Matthias Brugger <mbrugger@...e.com>, 
    Miroslav Benes <mbenes@...e.cz>, Tejun Heo <tj@...nel.org>, 
    Will Deacon <will@...nel.org>, linux-arch@...r.kernel.org, 
    linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
    linux-mm@...ck.org
Subject: Re: [RFC PATCH v1 02/57] vmlinux: Align to PAGE_SIZE_MAX

On Mon, 14 Oct 2024, Ryan Roberts wrote:

> Increase alignment of structures requiring at least PAGE_SIZE alignment
> to PAGE_SIZE_MAX. For compile-time PAGE_SIZE, PAGE_SIZE_MAX == PAGE_SIZE
> so there is no change. For boot-time PAGE_SIZE, PAGE_SIZE_MAX is the
> largest selectable page size.

Can you verify that this works with the arch specific portions? This may
also allow to to reduce some of the arch dependent stuff.