linux-kernel - Re: [PATCH v2 06/13] arm64: mm: Re-implement the __flush_tlb_range

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Message-ID: <20260127120602.00007d65@huawei.com>
Date: Tue, 27 Jan 2026 12:06:02 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Ryan Roberts <ryan.roberts@....com>
CC: Will Deacon <will@...nel.org>, Ard Biesheuvel <ardb@...nel.org>, Catalin
 Marinas <catalin.marinas@....com>, Mark Rutland <mark.rutland@....com>, Linus
 Torvalds <torvalds@...ux-foundation.org>, Oliver Upton
	<oliver.upton@...ux.dev>, Marc Zyngier <maz@...nel.org>, "Dev Jain"
	<dev.jain@....com>, Linu Cherian <Linu.Cherian@....com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 06/13] arm64: mm: Re-implement the
 __flush_tlb_range_op macro in C

On Mon, 19 Jan 2026 17:21:53 +0000
Ryan Roberts <ryan.roberts@....com> wrote:

> The __flush_tlb_range_op() macro is horrible and has been a previous
> source of bugs thanks to multiple expansions of its arguments (see
> commit f7edb07ad7c6 ("Fix mmu notifiers for range-based invalidates")).
> 
> Rewrite the thing in C.
> 
> Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
> Co-developed-by: Will Deacon <will@...nel.org>
> Signed-off-by: Will Deacon <will@...nel.org>
> Signed-off-by: Ryan Roberts <ryan.roberts@....com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>