From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Anshuman Khandual <anshuman.khandual@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Ryan Roberts <ryan.roberts@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Stoakes <ljs@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@kernel.org>,
Linu Cherian <linu.cherian@arm.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH V2 03/14] arm64/mm: Route all pgtable writes via ptval_set()
Date: Wed, 16 Sep 2026 15:36:46 +0200 [thread overview]
Message-ID: <2cb3bb6b-df38-4568-987d-8e71b3244279@kernel.org> (raw)
In-Reply-To: <20260907035030.2839978-4-anshuman.khandual@arm.com>
On 9/7/26 05:50, Anshuman Khandual wrote:
> Currently ptval_set() is defined as WRITE_ONCE() but this will change for
> D128 pgtable builds, for which WRITE_ONCE() is not sufficient for single
> copy atomicity.
>
> In future this infrastructure can be used for D128 to maintain single copy
> atomicity semantics with inline asm blocks.
>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Ryan Roberts <ryan.roberts@arm.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-kernel@vger.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
> ---
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-09-16 13:36 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-07 3:50 [PATCH V2 00/14] arm64/mm: Enable 128 bit page table entries Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 01/14] mm: Add read-write accessors for vm_page_prot Anshuman Khandual
2026-09-16 13:23 ` David Hildenbrand (Arm)
2026-09-16 13:41 ` Lorenzo Stoakes (ARM)
2026-09-17 4:02 ` Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 02/14] arm64/mm: Route all pgtable reads via ptval_get() Anshuman Khandual
2026-09-16 13:35 ` David Hildenbrand (Arm)
2026-09-16 13:38 ` David Hildenbrand (Arm)
2026-09-17 4:26 ` Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 03/14] arm64/mm: Route all pgtable writes via ptval_set() Anshuman Khandual
2026-09-16 13:36 ` David Hildenbrand (Arm) [this message]
2026-09-07 3:50 ` [PATCH V2 04/14] arm64/mm: Route all pgtable atomics to central helpers Anshuman Khandual
2026-09-16 13:39 ` David Hildenbrand (Arm)
2026-09-17 4:18 ` Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 05/14] arm64/mm: Override read-write accessors for vm_page_prot Anshuman Khandual
2026-09-16 13:39 ` David Hildenbrand (Arm)
2026-09-17 4:09 ` Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 06/14] arm64/mm: Enable fixmap with 5 level page table Anshuman Khandual
2026-09-16 14:30 ` David Hildenbrand (Arm)
2026-09-17 6:18 ` Anshuman Khandual
2026-09-17 18:28 ` David Hildenbrand (Arm)
2026-09-07 3:50 ` [PATCH V2 07/14] arm64/mm: Enable pgtable geometry for FEAT_D128 Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 08/14] arm64/mm: Enable pgtable descriptor " Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 09/14] arm64/mm: Enable 128 bit translation Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 10/14] arm64/mm: Add an abstraction level for tlbi_op Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 11/14] arm64/mm: Enable TLBIP instruction based TLB flush Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 12/14] arm64/mm: Relax KASAN shadow alignment for FEAT_D128 Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 13/14] arm64/mm: Make ARM64_D128 selectable Anshuman Khandual
2026-09-07 3:50 ` [PATCH V2 14/14] arm64/configs: Add d128.config Anshuman Khandual
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