linux-kernel - Re: [PATCH] MAINTAINERS: add mm GUP section

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <eb2b0bce-6012-4019-8ff7-c35c24ba7aa1@suse.cz>
Date: Mon, 12 May 2025 09:38:46 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 David Hildenbrand <david@...hat.com>, Zi Yan <ziy@...dia.com>
Cc: Uladzislau Rezki <urezki@...il.com>,
 Andrew Morton <akpm@...ux-foundation.org>, Jason Gunthorpe <jgg@...dia.com>,
 John Hubbard <jhubbard@...dia.com>, Peter Xu <peterx@...hat.com>,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MAINTAINERS: add mm GUP section

On 5/8/25 14:23, Lorenzo Stoakes wrote:
>>
>> M for "PAGE ALLOCATOR", hmmm ..., I was hoping that Vlastimil might have
>> capacity for that? :)
> 
> Vlastimil? ;)
> 
> I'd certainly support this.

OK, can do, thanks.

>>
>>
>>
>> Not 100% sure what to do with
>>
>> * include/linux/page_isolation.h
>> * mm/page_isolation.c
>>
>> (I hate the word "page isolation")
>>
>> They are mostly about page migration (either for alloc_contig... or memory
>> hotunplug). Likely they should either go to the MIGRATION section or to the
>> PAGE ALLOCATOR? Maybe MIGRATION makes more sense. Thoughts?
> 
> I mean it explicitly relates to migrate type and migration so seems to me
> it ought to be in migration.
> 
> Though migrate type + the machinary around it is a product of the physical
> page allocator (I even cover it in the 'physical memory' section of the
> book).
> 
> I wonder if our soon-to-be page allocator maintainer Vlastimil has
> thoughts? ;)
> 
> I'd vote for migration though to be honest.

I checked the code briefly and although migratetypes are related to
migration, it seems rather page allocator code to me.

In fact if I didn't miss these files, I would have included them when
proposing the PAGE ALLOCATOR section.
Zi Yan has a series on that topic now and is one of the R: in PAGE
ALLOCATOR. What do you think?

>>
>> --
>> Cheers,
>>
>> David / dhildenb
>>