linux-kernel - Re: [PATCH] arm64/mm: Add a fallback stub for pgd_page

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Message-ID: <aQoORmgliayA0s_a@willie-the-truck>
Date: Tue, 4 Nov 2025 14:31:34 +0000
From: Will Deacon <will@...nel.org>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-arm-kernel@...ts.infradead.org, ryan.roberts@....com,
	Catalin Marinas <catalin.marinas@....com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64/mm: Add a fallback stub for pgd_page_paddr()

On Tue, Oct 14, 2025 at 12:06:33PM +0100, Anshuman Khandual wrote:
> Add a fallback stub for pgd_page_paddr() when (PGTBALE_LEVELS <= 4) which

typo

> helps in intercepting any unintended usage and which is also in line with
> existing stubs for similar [pud|p4d]_page_paddr() helpers.

Are you saying the kernel compiles in this case without your patch? Which
definition of pgd_page_paddr() does it end up using?

Will