linux-kernel - Re: [PATCH RFC 1/2] pgtable: add pte_clrhuge() implementation for arm64 and riscv

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Message-ID: <aPE36PlriswJWSKD@casper.infradead.org>
Date: Thu, 16 Oct 2025 19:22:32 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Yin Tirui <yintirui@...wei.com>
Cc: akpm@...ux-foundation.org, david@...hat.com, lorenzo.stoakes@...cle.com,
	Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org,
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	baolin.wang@...ux.alibaba.com, npache@...hat.com,
	ryan.roberts@....com, dev.jain@....com, baohua@...nel.org,
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	linux-riscv@...ts.infradead.org, wangkefeng.wang@...wei.com,
	chenjun102@...wei.com
Subject: Re: [PATCH RFC 1/2] pgtable: add pte_clrhuge() implementation for
 arm64 and riscv

On Thu, Oct 16, 2025 at 07:27:03PM +0800, Yin Tirui wrote:
> Add pte_clrhuge() helper function for architectures that enable
> ARCH_SUPPORTS_HUGE_PFNMAP to clear huge page attributes from PTE
> entries.

I really would prefer to see pte_clrhuge() removed first.  Otherwise
this just goes onto the long list of "somebody should clean this up some
day" and nobody ever will.