From: Jonathan Cameron <jonathan.cameron@huawei.com>
To: Ryan Roberts <ryan.roberts@arm.com>
Cc: Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Oliver Upton <oliver.upton@linux.dev>,
Marc Zyngier <maz@kernel.org>, Dev Jain <dev.jain@arm.com>,
Linu Cherian <Linu.Cherian@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v1 03/13] arm64: mm: Implicitly invalidate user ASID based on TLBI operation
Date: Tue, 16 Dec 2025 18:01:18 +0000 [thread overview]
Message-ID: <20251216180118.00005085@huawei.com> (raw)
In-Reply-To: <20251216144601.2106412-4-ryan.roberts@arm.com>
On Tue, 16 Dec 2025 14:45:48 +0000
Ryan Roberts <ryan.roberts@arm.com> wrote:
> When kpti is enabled, separate ASIDs are used for userspace and
> kernelspace, requiring ASID-qualified TLB invalidation by virtual
> address to invalidate both of them.
>
> Push the logic for invalidating the two ASIDs down into the low-level
> tlbi-op-specific functions and remove the burden from the caller to
> handle the kpti-specific behaviour.
>
> Co-developed-by: Will Deacon <will@kernel.org>
> Signed-off-by: Will Deacon <will@kernel.org>
> Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
> ---
> arch/arm64/include/asm/tlbflush.h | 27 ++++++++++-----------------
> 1 file changed, 10 insertions(+), 17 deletions(-)
>
> diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
> index c5111d2afc66..31f43d953ce2 100644
> --- a/arch/arm64/include/asm/tlbflush.h
> +++ b/arch/arm64/include/asm/tlbflush.h
> +#undef __tlbi_user
> #endif
> -
Hi Ryan,
It's trivial Tuesday so... Unrelated white space change.
> #endif
next prev parent reply other threads:[~2025-12-16 18:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-16 14:45 [PATCH v1 00/13] arm64: Refactor TLB invalidation API and implementation Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 01/13] arm64: mm: Re-implement the __tlbi_level macro as a C function Ryan Roberts
2025-12-16 17:53 ` Jonathan Cameron
2026-01-02 14:18 ` Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 02/13] arm64: mm: Introduce a C wrapper for by-range TLB invalidation Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 03/13] arm64: mm: Implicitly invalidate user ASID based on TLBI operation Ryan Roberts
2025-12-16 18:01 ` Jonathan Cameron [this message]
2026-01-02 14:20 ` Ryan Roberts
2025-12-18 6:30 ` Linu Cherian
2025-12-18 7:05 ` Linu Cherian
2025-12-18 15:47 ` Linu Cherian
2026-01-02 14:30 ` Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 04/13] arm64: mm: Push __TLBI_VADDR() into __tlbi_level() Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 05/13] arm64: mm: Inline __TLBI_VADDR_RANGE() into __tlbi_range() Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 06/13] arm64: mm: Re-implement the __flush_tlb_range_op macro in C Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 07/13] arm64: mm: Simplify __TLBI_RANGE_NUM() macro Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 08/13] arm64: mm: Simplify __flush_tlb_range_limit_excess() Ryan Roberts
2025-12-17 8:12 ` Dev Jain
2026-01-02 15:23 ` Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 09/13] arm64: mm: Refactor flush_tlb_page() to use __tlbi_level_asid() Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 10/13] arm64: mm: Refactor __flush_tlb_range() to take flags Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 11/13] arm64: mm: More flags for __flush_tlb_range() Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 12/13] arm64: mm: Wrap flush_tlb_page() around ___flush_tlb_range() Ryan Roberts
2025-12-16 14:45 ` [PATCH v1 13/13] arm64: mm: Provide level hint for flush_tlb_page() Ryan Roberts
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