From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Muhammad Usama Anjum <usama.anjum@arm.com>,
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Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org,
linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org,
linux-perf-users@vger.kernel.org, damon@lists.linux.dev,
kasan-dev@googlegroups.com, intel-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, xen-devel@lists.xenproject.org
Subject: Re: [PATCH v3 3/9] mm: use hw_pte_t for generic PTE table storage
Date: Thu, 1 Oct 2026 13:26:17 +0200 [thread overview]
Message-ID: <fc9919bf-b9e2-45c2-bd7c-70b37341b664@kernel.org> (raw)
In-Reply-To: <20260922-pte0-v3-3-5670b8cb9059@arm.com>
On 9/22/26 19:12, Muhammad Usama Anjum wrote:
> Generic page-table interfaces use pte_t * for both pointers to PTE table
> storage and pointers to software PTE values. Convert the generic
> declarations and their MM, fs, and kernel users together so parameters,
> return types, callbacks, and local pointers that designate table storage
> use hw_pte_t *.
>
> Include linux/pgtable_types.h from headers that expose the converted
> interfaces. It continues to provide pgprot_t to vmalloc.h through
> asm/page.h.
>
> Keep software PTE values as pte_t and retain pte_t * for value interfaces.
>
> No architecture selects ARCH_HAS_HW_PTE_T at this point, so hw_pte_t
> remains an alias of pte_t and this changes the interface vocabulary without
> changing representation or behavior.
>
> Most of this mechanical conversion was generated with the Coccinelle script
> included in the cover letter. The script deliberately ignores pte_t *
> pointers named ptentp because they designate software PTE values. The
> result was then audited, and sites the script could not convert were
> updated by hand.
>
> Signed-off-by: Muhammad Usama Anjum <usama.anjum@arm.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-10-01 11:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 17:12 [PATCH v3 0/9] mm: distinguish HW PTE pointers from SW PTE value pointers Muhammad Usama Anjum
2026-09-22 17:12 ` [PATCH v3 1/9] mm: introduce hw_pte_t for PTE table storage Muhammad Usama Anjum
2026-09-30 4:13 ` Anshuman Khandual
2026-09-30 15:27 ` Zi Yan
2026-09-22 17:12 ` [PATCH v3 2/9] mm: rename pointers to software PTE values as ptentp Muhammad Usama Anjum
2026-09-30 4:20 ` Anshuman Khandual
2026-09-22 17:12 ` [PATCH v3 3/9] mm: use hw_pte_t for generic PTE table storage Muhammad Usama Anjum
2026-09-30 4:35 ` Anshuman Khandual
2026-09-30 17:40 ` Muhammad Usama Anjum
2026-10-01 11:25 ` David Hildenbrand (Arm)
2026-10-01 11:26 ` David Hildenbrand (Arm) [this message]
2026-09-22 17:12 ` [PATCH v3 4/9] mm: convert PTE table entries in ptep_get() Muhammad Usama Anjum
2026-09-30 5:10 ` Anshuman Khandual
2026-09-30 17:46 ` Muhammad Usama Anjum
2026-10-01 11:27 ` David Hildenbrand (Arm)
2026-09-22 17:12 ` [PATCH v3 5/9] mm: convert PTE table entry to pte Muhammad Usama Anjum
2026-10-01 11:17 ` David Hildenbrand (Arm)
2026-09-22 17:12 ` [PATCH v3 6/9] mm: add hw_pte_val for HW PTE storage Muhammad Usama Anjum
2026-10-01 11:19 ` David Hildenbrand (Arm)
2026-09-22 17:12 ` [PATCH v3 7/9] mm/kasan: use hw_pte_t for the early shadow PTE table Muhammad Usama Anjum
2026-10-01 11:20 ` David Hildenbrand (Arm)
2026-09-22 17:12 ` [PATCH v3 8/9] drm/i915: use hw_pte_t for PTE range callbacks Muhammad Usama Anjum
2026-10-01 11:21 ` David Hildenbrand (Arm)
2026-09-22 17:12 ` [PATCH v3 9/9] xen: " Muhammad Usama Anjum
2026-10-01 11:22 ` David Hildenbrand (Arm)
2026-09-28 7:09 ` [PATCH v3 0/9] mm: distinguish HW PTE pointers from SW PTE value pointers Alexander Gordeev
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