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From: Marc Zyngier <maz@kernel.org>
To: Luo Jie <quic_luoj@quicinc.com>
Cc: Yury Norov <yury.norov@gmail.com>,
	Rasmus Villemoes <linux@rasmusvillemoes.dk>,
	Julia Lawall <Julia.Lawall@inria.fr>,
	"Nicolas\ Palix" <nicolas.palix@imag.fr>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>, <linux-kernel@vger.kernel.org>,
	<cocci@inria.fr>, <linux-arm-kernel@lists.infradead.org>,
	<kvmarm@lists.linux.dev>, <andrew@lunn.ch>,
	<quic_kkumarcs@quicinc.com>, <quic_linchen@quicinc.com>,
	<quic_leiwei@quicinc.com>, <quic_suruchia@quicinc.com>,
	<quic_pavir@quicinc.com>
Subject: Re: [PATCH v4 0/5] Add FIELD_MODIFY() helper
Date: Thu, 12 Jun 2025 15:11:33 +0100	[thread overview]
Message-ID: <86sek5cane.wl-maz@kernel.org> (raw)
In-Reply-To: <20250612-field_modify-v4-0-ae4f74da45a6@quicinc.com>

On Thu, 12 Jun 2025 14:46:07 +0100,
Luo Jie <quic_luoj@quicinc.com> wrote:
> 
> Add the helper FIELD_MODIFY() to the FIELD_XXX family of bitfield
> macros. It is functionally similar as xxx_replace_bits(), but adds
> the compile time checking to catch incorrect parameter type errors.
> 
> This series also converts the four instances of opencoded FIELD_MODIFY()
> that are found in the core kernel files, to instead use the new
> FIELD_MODIFY() macro. This is achieved with Coccinelle, by adding
> the script field_modify.cocci.
> 
> The changes are validated on IPQ9574 SoC which uses ARM64 architecture.
> 
> Signed-off-by: Luo Jie <quic_luoj@quicinc.com>

I already indicated that the *pre-existing* set of helpers are enough
for what we want to do, that we *already* use them for KVM/arm64, and
that I didn't need nor want two ways to do the same thing in the same
code base.

My opinion hasn't changed on that front, and I don't see a point in
these patches.

	M.

-- 
Without deviation from the norm, progress is not possible.


  parent reply	other threads:[~2025-06-12 19:43 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-12 13:46 [PATCH v4 0/5] Add FIELD_MODIFY() helper Luo Jie
2025-06-12 13:46 ` [PATCH v4 1/5] coccinelle: misc: Add field_modify script Luo Jie
2025-06-12 16:48   ` [cocci] " Markus Elfring
2025-06-16 10:28     ` Luo Jie
2025-06-12 13:46 ` [PATCH v4 2/5] arm64: tlb: Convert the opencoded field modify Luo Jie
2025-06-12 20:15   ` [cocci] " Markus Elfring
2025-06-16 10:37     ` Luo Jie
2025-06-16 10:41       ` Will Deacon
2025-06-16 16:19         ` Luo Jie
2025-06-16 13:52       ` [cocci] [v4 " Markus Elfring
2025-06-16 16:19         ` Luo Jie
2025-06-12 13:46 ` [PATCH v4 3/5] arm64: nvhe: " Luo Jie
2025-06-12 13:46 ` [PATCH v4 4/5] arm64: kvm: " Luo Jie
2025-06-12 13:46 ` [PATCH v4 5/5] arm64: mm: " Luo Jie
2025-06-12 14:11 ` Marc Zyngier [this message]
2025-06-16 10:06   ` [PATCH v4 0/5] Add FIELD_MODIFY() helper Luo Jie

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