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 05/14] arm64/mm: Override read-write accessors for vm_page_prot
Date: Wed, 16 Sep 2026 15:39:31 +0200 [thread overview]
Message-ID: <51993407-083f-45b7-990b-105a0c08a5a0@kernel.org> (raw)
In-Reply-To: <20260907035030.2839978-6-anshuman.khandual@arm.com>
On 9/7/26 05:50, Anshuman Khandual wrote:
> Override pgprot_[read|write]() accessors using ptval_[get|set]() providing
> required single copy atomic operation for vma->vm_page_prot.
>
> 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>
> ---
> arch/arm64/include/asm/pgtable.h | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
> index 66bf5bbe484e..2b457db19be0 100644
> --- a/arch/arm64/include/asm/pgtable.h
> +++ b/arch/arm64/include/asm/pgtable.h
> @@ -122,6 +122,18 @@ static inline pgd_t pgdp_get(pgd_t *pgdp)
> return ptval_get(*pgdp);
> }
>
> +#define pgprot_read pgprot_read
> +static inline pgprot_t pgprot_read(pgprot_t *prot)
> +{
> + return ptval_get(*prot);
> +}
Similarly a const pointer here.
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-09-16 13:39 UTC|newest]
Thread overview: 23+ 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)
2026-09-07 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)
2026-09-07 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)
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)
2026-09-07 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) [this message]
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)
2026-09-07 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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