From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Xueyuan Chen <xueyuan.chen21@gmail.com>
Cc: dave.hansen@intel.com, akpm@linux-foundation.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
catalin.marinas@arm.com, will@kernel.org, tglx@kernel.org,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
luto@kernel.org, peterz@infradead.org, hpa@zytor.com,
ljs@kernel.org, liam@infradead.org, vbabka@kernel.org,
rppt@kernel.org, surenb@google.com, mhocko@suse.com,
ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com,
ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org,
lance.yang@linux.dev, yang@os.amperecomputing.com,
jannh@google.com
Subject: Re: [RFC PATCH v2 1/3] mm/huge_memory: make persistent huge zero folio read-only
Date: Thu, 18 Jun 2026 14:36:25 +0200 [thread overview]
Message-ID: <0e5b23a6-4895-454a-9dfa-6dc21adc2991@kernel.org> (raw)
In-Reply-To: <20260618114822.165413-1-xueyuan.chen21@gmail.com>
On 6/18/26 13:48, Xueyuan Chen wrote:
>
> On Thu, Jun 18, 2026 at 11:06:41AM +0200, David Hildenbrand (Arm) wrote:
>
> Hi, David
>
> [...]
>
>>>
>>> How about naming it int set_direct_map_ro(struct page *page, unsigned nr)?
>>
>> To distinguish it from "set_memory*" cruft, maybe best to use "remap" or
>> "adjust" instead.
>>
>
> OK, how about `remap_direct_map_ro`? If no objections, I will add this
> API to `set_memory.h` in the next version.
Best to wait for some feedback.
I do wonder whether we want to pass an address instead of a page.
https://lore.kernel.org/r/20260410151746.61150-2-kalyazin@amazon.com
Wants to convert existing ones as well.
That would imply that the caller must check for highmem.
But then, we could just use existing set_memory_ro(), right?
--
Cheers,
David
next prev parent reply other threads:[~2026-06-18 12:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 14:37 [RFC PATCH v2 0/3] make persistent huge zero folio read-only Xueyuan Chen
2026-06-09 14:37 ` [RFC PATCH v2 1/3] mm/huge_memory: " Xueyuan Chen
2026-06-09 19:33 ` Dave Hansen
2026-06-10 3:20 ` Lance Yang
2026-06-11 6:49 ` Mike Rapoport
2026-06-11 10:35 ` Lance Yang
2026-06-17 11:50 ` David Hildenbrand (Arm)
2026-06-17 14:15 ` Xueyuan Chen
2026-06-18 9:06 ` David Hildenbrand (Arm)
2026-06-18 11:48 ` Xueyuan Chen
2026-06-18 12:36 ` David Hildenbrand (Arm) [this message]
2026-06-09 19:45 ` Andrew Morton
2026-06-10 2:15 ` Lance Yang
2026-06-11 11:28 ` David Hildenbrand (Arm)
2026-06-11 11:58 ` Lance Yang
2026-06-11 12:21 ` David Hildenbrand (Arm)
2026-06-11 12:50 ` Lance Yang
2026-06-09 14:38 ` [RFC PATCH v2 2/3] arm64/mm: make pages read-only in the linear map Xueyuan Chen
2026-06-09 14:38 ` [RFC PATCH v2 3/3] x86/mm: make pages read-only in the direct map Xueyuan Chen
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