linux-kernel - Re: [PATCH 03/21] x86/mm: factor out phys_pgd

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Message-ID: <DE50PRYPTPD5.3MAJLOSJFMA37@google.com>
Date: Mon, 10 Nov 2025 12:36:27 +0000
From: Brendan Jackman <jackmanb@...gle.com>
To: Borislav Petkov <bp@...en8.de>, Brendan Jackman <jackmanb@...gle.com>
Cc: Andy Lutomirski <luto@...nel.org>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, 
	"Liam R. Howlett" <Liam.Howlett@...cle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	Michal Hocko <mhocko@...e.com>, Johannes Weiner <hannes@...xchg.org>, Zi Yan <ziy@...dia.com>, 
	Axel Rasmussen <axelrasmussen@...gle.com>, Yuanchu Xie <yuanchu@...gle.com>, 
	Roman Gushchin <roman.gushchin@...ux.dev>, <peterz@...radead.org>, 
	<dave.hansen@...ux.intel.com>, <mingo@...hat.com>, <tglx@...utronix.de>, 
	<akpm@...ux-foundation.org>, <david@...hat.com>, <derkling@...gle.com>, 
	<junaids@...gle.com>, <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>, 
	<reijiw@...gle.com>, <rientjes@...gle.com>, <rppt@...nel.org>, 
	<vbabka@...e.cz>, <x86@...nel.org>, <yosry.ahmed@...ux.dev>
Subject: Re: [PATCH 03/21] x86/mm: factor out phys_pgd_init()

On Mon Nov 10, 2025 at 11:38 AM UTC, Borislav Petkov wrote:
> On Sun, Oct 26, 2025 at 10:29:23PM +0000, Brendan Jackman wrote:
>> Per Dave's feedback I am still slightly hopeful I can find a way to
>> come in and refactor this code so that it's gets cleaner for you guys
>> and then ASI becomes a natural addition. So far I don't come up with
>> anything in init_64.c but I'm still planning to stare at set_memory.c a
>> while longer and see if anything comes to mind. So maybe we'll be able
>> to reduce the yuck factor a bit.
>
> Cleanups like that are always more than welcome!
>
> :-)

In that case, I will advertise this (less ambitious) cleanup which is
awaiting review:

https://lore.kernel.org/all/20251003-x86-init-cleanup-v1-4-f2b7994c2ad6@google.com/