linux-kernel - Re: [PATCH v2 02/11] mm: convert track_pfn_insert() to pfnmap_setup

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Message-ID: <219ad4d8-c191-4c1a-a835-e798ab58374f@redhat.com>
Date: Tue, 13 May 2025 11:06:12 +0200
From: David Hildenbrand <david@...hat.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
 intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
 linux-trace-kernel@...r.kernel.org, Dave Hansen
 <dave.hansen@...ux.intel.com>, Andy Lutomirski <luto@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner <tglx@...utronix.de>,
 Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
 "H. Peter Anvin" <hpa@...or.com>, Jani Nikula <jani.nikula@...ux.intel.com>,
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
 Rodrigo Vivi <rodrigo.vivi@...el.com>, Tvrtko Ursulin
 <tursulin@...ulin.net>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Andrew Morton <akpm@...ux-foundation.org>,
 Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu
 <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, Vlastimil Babka
 <vbabka@...e.cz>, Jann Horn <jannh@...gle.com>,
 Pedro Falcato <pfalcato@...e.de>, Peter Xu <peterx@...hat.com>,
 Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH v2 02/11] mm: convert track_pfn_insert() to
 pfnmap_setup_cachemode*()

On 12.05.25 17:43, Lorenzo Stoakes wrote:
> On Mon, May 12, 2025 at 02:34:15PM +0200, David Hildenbrand wrote:
>> ... by factoring it out from track_pfn_remap() into
>> pfnmap_setup_cachemode() and provide pfnmap_setup_cachemode_pfn() as
>> a replacement for track_pfn_insert().
>>
>> For PMDs/PUDs, we keep checking a single pfn only. Add some documentation,
>> and also document why it is valid to not check the whole pfn range.
>>
>> We'll reuse pfnmap_setup_cachemode() from core MM next.
>>
>> Acked-by: Ingo Molnar <mingo@...nel.org> # x86 bits
>> Signed-off-by: David Hildenbrand <david@...hat.com>
> 
> I've gone through carefully and checked and this looks good to me :)

Thanks a bunch!

-- 
Cheers,

David / dhildenb