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

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Message-ID: <c91878d6-f645-4fc0-abd3-f1ba4aef47cd@huawei.com>
Date: Sat, 18 Oct 2025 11:12:47 +0800
From: Yin Tirui <yintirui@...wei.com>
To: Matthew Wilcox <willy@...radead.org>
CC: <akpm@...ux-foundation.org>, <david@...hat.com>,
	<lorenzo.stoakes@...cle.com>, <Liam.Howlett@...cle.com>, <vbabka@...e.cz>,
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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 10/17/2025 2:22 AM, Matthew Wilcox wrote:
> 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.
> 

Understood. I'm working on it.
-- 
Best regards,
Yin Tirui