From: "David Hildenbrand (Arm)" <david@kernel.org>
To: "Huang, Ying" <ying.huang@linux.alibaba.com>,
Shivank Garg <shivankg@amd.com>
Cc: akpm@linux-foundation.org, kinseyho@google.com,
weixugc@google.com, ljs@kernel.org, Liam.Howlett@oracle.com,
vbabka@kernel.org, willy@infradead.org, rppt@kernel.org,
surenb@google.com, mhocko@suse.com, ziy@nvidia.com,
matthew.brost@intel.com, joshua.hahnjy@gmail.com,
rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net,
apopple@nvidia.com, dave@stgolabs.net,
Jonathan.Cameron@huawei.com, rkodsara@amd.com, vkoul@kernel.org,
bharata@amd.com, sj@kernel.org, rientjes@google.com,
xuezhengchu@huawei.com, yiannis@zptcorp.com,
dave.hansen@intel.com, hannes@cmpxchg.org, jhubbard@nvidia.com,
peterx@redhat.com, riel@surriel.com, shakeel.butt@linux.dev,
stalexan@redhat.com, tj@kernel.org, nifan.cxl@gmail.com,
jic23@kernel.org, aneesh.kumar@kernel.org, nathan.lynch@amd.com,
Frank.li@nxp.com, djbw@kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH 0/7] Accelerate page migration with batch copying and hardware offload
Date: Mon, 11 May 2026 17:19:18 +0200 [thread overview]
Message-ID: <088ded16-09ca-4c40-ab23-62108c342588@kernel.org> (raw)
In-Reply-To: <87a4ub35ja.fsf@DESKTOP-5N7EMDA>
>> ---------------
>>
>> 1. Should the batch path run without a registered migrator? Patches 1-4
>> are self-contained and use folios_mc_copy() (CPU). I have several
>> options like making batch path always-on for eligible folios, or
>> giving admin an option to flip the static branch, or keep the gate.
>> I'm leaning toward always-on.
>>
>> 2. Carrying already_copied via folio->migrate_info vs changing the
>> migrate_folio() callback signature (Huang, Ying). I went with the
>> field for now to avoid touching every fs callback before the design
>> settles. Happy to revisit.
>
> Personally, I still prefer to change migrate_folio() callbacks for
> better readability.
Can that be added as a cleanup on top?
--
Cheers,
David
next prev parent reply other threads:[~2026-05-11 15:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260428155043.39251-2-shivankg@amd.com>
[not found] ` <20260428155043.39251-6-shivankg@amd.com>
2026-05-07 9:43 ` [PATCH 2/7] mm/migrate: use migrate_info field instead of private Huang, Ying
2026-05-11 15:22 ` David Hildenbrand (Arm)
2026-05-07 9:58 ` [PATCH 0/7] Accelerate page migration with batch copying and hardware offload Huang, Ying
2026-05-11 15:19 ` David Hildenbrand (Arm) [this message]
[not found] ` <87zf2kvnqy.fsf@DESKTOP-5N7EMDA>
2026-05-08 11:04 ` Garg, Shivank
2026-05-08 11:28 ` Huang, Ying
2026-05-08 12:34 ` Garg, Shivank
2026-05-09 7:49 ` Huang, Ying
2026-05-10 15:03 ` Garg, Shivank
[not found] ` <20260428155043.39251-8-shivankg@amd.com>
2026-05-11 15:35 ` [PATCH 3/7] mm/migrate: skip data copy for already-copied folios David Hildenbrand (Arm)
[not found] ` <20260428155043.39251-10-shivankg@amd.com>
2026-05-11 15:40 ` [PATCH 4/7] mm/migrate: add batch-copy path in migrate_pages_batch David Hildenbrand (Arm)
[not found] ` <20260428155043.39251-12-shivankg@amd.com>
2026-05-11 15:46 ` [PATCH 5/7] mm/migrate: add copy offload registration infrastructure David Hildenbrand (Arm)
2026-05-11 15:50 ` David Hildenbrand (Arm)
2026-05-11 15:53 ` [PATCH 0/7] Accelerate page migration with batch copying and hardware offload David Hildenbrand (Arm)
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