linux-kernel - Re: [v7 00/16] mm: support device-private THP

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Message-ID: <fce3cb20-07b8-4cd7-ae7e-5800bbb53ae7@nvidia.com>
Date: Wed, 12 Nov 2025 11:36:29 +1100
From: Balbir Singh <balbirs@...dia.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Matthew Brost <matthew.brost@...el.com>, linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linux-mm@...ck.org,
 David Hildenbrand <david@...hat.com>, Zi Yan <ziy@...dia.com>,
 Joshua Hahn <joshua.hahnjy@...il.com>, Rakie Kim <rakie.kim@...com>,
 Byungchul Park <byungchul@...com>, Gregory Price <gourry@...rry.net>,
 Ying Huang <ying.huang@...ux.alibaba.com>,
 Alistair Popple <apopple@...dia.com>, Oscar Salvador <osalvador@...e.de>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Baolin Wang <baolin.wang@...ux.alibaba.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, Nico Pache <npache@...hat.com>,
 Ryan Roberts <ryan.roberts@....com>, Dev Jain <dev.jain@....com>,
 Barry Song <baohua@...nel.org>, Lyude Paul <lyude@...hat.com>,
 Danilo Krummrich <dakr@...nel.org>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Ralph Campbell <rcampbell@...dia.com>,
 Mika Penttilä <mpenttil@...hat.com>,
 Francois Dugast <francois.dugast@...el.com>
Subject: Re: [v7 00/16] mm: support device-private THP

On 11/12/25 11:24, Andrew Morton wrote:
> On Wed, 12 Nov 2025 10:52:43 +1100 Balbir Singh <balbirs@...dia.com> wrote:
> 
>>> https://lkml.kernel.org/r/62073ca1-5bb6-49e8-b8d4-447c5e0e582e@
>>>
>>
>> I can't seem to open this
> 
> https://lore.kernel.org/all/62073ca1-5bb6-49e8-b8d4-447c5e0e582e@nvidia.com/T/#u
> 
>>> plus a general re-read of the
>>> mm-migrate_device-add-thp-splitting-during-migration.patch review
>>> discussion.
>>>
>> That's the patch I have
>>
> 
> What I meant was - please re-read the review against that patch (it was
> fairly long) and double-check that everything was addressed.
> 

The last discussion ended at https://lore.kernel.org/all/CABzRoyZZ8QLF5PSeDCVxgcnQmF9kFQ3RZdNq0Deik3o9OrK+BQ@mail.gmail.com/T/#m2368cc4ed7d88b2ae99157a649a9a5877585f006

In summary, removing the cluster_info and deferred_list handling
into another function lead to duplication and so I've avoided
going down that route. I'll send the new patch out shortly

Balbir