From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Usama Arif <usama.arif@linux.dev>,
Andrew Morton <akpm@linux-foundation.org>,
chrisl@kernel.org, kasong@tencent.com, ljs@kernel.org,
ziy@nvidia.com, linux-mm@kvack.org
Cc: ying.huang@linux.alibaba.com, Baoquan He <baoquan.he@linux.dev>,
willy@infradead.org, youngjun.park@lge.com, hannes@cmpxchg.org,
riel@surriel.com, shakeel.butt@linux.dev, alex@ghiti.fr,
kas@kernel.org, baohua@kernel.org, dev.jain@arm.com,
baolin.wang@linux.alibaba.com, npache@redhat.com,
"Liam R. Howlett" <liam@infradead.org>,
ryan.roberts@arm.com, Vlastimil Babka <vbabka@kernel.org>,
lance.yang@linux.dev, linux-kernel@vger.kernel.org,
nphamcs@gmail.com, shikemeng@huaweicloud.com,
kernel-team@meta.com
Subject: Re: [PATCH v2 6/6] mm: rename ARCH_ENABLE_THP_MIGRATION to ARCH_HAS_PMD_SOFTLEAVES
Date: Mon, 6 Jul 2026 20:32:22 +0200 [thread overview]
Message-ID: <72f81925-e845-45fe-bf68-753be5b4d75f@kernel.org> (raw)
In-Reply-To: <20260706114320.1643046-7-usama.arif@linux.dev>
On 7/6/26 13:42, Usama Arif wrote:
> CONFIG_ARCH_ENABLE_THP_MIGRATION gates PMD-level migration entries.
> PMD-level device-private entries use the same migration mechanism and
> therefore require the same architecture support.
>
> Upcoming PMD-level swap entries can use the same PMD softleaf helpers
> without depending on page migration, so rename the architecture gate to
> CONFIG_ARCH_HAS_PMD_SOFTLEAVES. This describes the PMD entry capability
> rather than one current user of it.
>
> This is a pure rename: the set of selecting architectures (x86, arm64,
> s390, riscv, loongarch, and powerpc on PPC_BOOK3S_64) and the gating
> semantics are unchanged.
>
> No functional change intended.
>
> Reviewed-by: Zi Yan <ziy@nvidia.com>
> Signed-off-by: Usama Arif <usama.arif@linux.dev>
> ---
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-07-06 18:32 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-06 11:42 [PATCH v2 0/6] mm: preparatory patches for PMD level swap entries Usama Arif
2026-07-06 11:42 ` [PATCH v2 1/6] mm: add softleaf_to_pmd() and convert existing callers Usama Arif
2026-07-06 11:42 ` [PATCH v2 2/6] mm: extract mm_prepare_for_swap_entries() helper Usama Arif
2026-07-06 12:01 ` Kiryl Shutsemau
2026-07-06 12:23 ` Usama Arif
2026-07-06 12:50 ` Kiryl Shutsemau
2026-07-06 11:42 ` [PATCH v2 3/6] fs/proc: use softleaf_has_pfn() in pagemap PMD walker Usama Arif
2026-07-06 11:42 ` [PATCH v2 4/6] mm/huge_memory: move softleaf_to_folio() inside migration branch Usama Arif
2026-07-06 11:42 ` [PATCH v2 5/6] mm/migrate_device: move softleaf_to_folio() inside device-private branch Usama Arif
2026-07-06 11:42 ` [PATCH v2 6/6] mm: rename ARCH_ENABLE_THP_MIGRATION to ARCH_HAS_PMD_SOFTLEAVES Usama Arif
2026-07-06 18:32 ` David Hildenbrand (Arm) [this message]
2026-07-06 17:56 ` [PATCH v2 0/6] mm: preparatory patches for PMD level swap entries Andrew Morton
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