linux-kernel - Re: [PATCH v4 17/26] genirq: Add request_percpu_irq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <86ldkat5jr.wl-maz@kernel.org>
Date: Thu, 13 Nov 2025 13:39:52 +0000
From: Marc Zyngier <maz@...nel.org>
To: Jonathan Cameron <jonathan.cameron@...wei.com>
Cc: <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-acpi@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Mark\
 Rutland" <mark.rutland@....com>,
	Will Deacon <will@...nel.org>,
	"Rafael J.\
 Wysocki" <rafael@...nel.org>,
	Rob Herring <robh@...nel.org>,
	"Saravana\
 Kannan" <saravanak@...gle.com>,
	Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>,
	Sven Peter <sven@...nel.org>,
	Janne Grunau
	<j@...nau.net>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	James Clark
	<james.clark@...aro.org>,
	Jinjie Ruan <ruanjinjie@...wei.com>,
	"Alexandru\
 Elisei" <alexandru.elisei@....com>
Subject: Re: [PATCH v4 17/26] genirq: Add request_percpu_irq_affinity() helper

On Wed, 12 Nov 2025 18:27:35 +0000,
Jonathan Cameron <jonathan.cameron@...wei.com> wrote:
> 
> On Mon, 20 Oct 2025 13:29:34 +0100
> Marc Zyngier <maz@...nel.org> wrote:
> 
> > While it would be nice to simply make request_percpu_irq() take
> > an affinity mask, the churn is likely to be on the irritating side
> > given that most drivers do not give a damn about affinities.
> 
> Only 37 instances. I'd have been tempted to do it anyway :)

I'm leaving this as an exercise for people who enjoy cross-subsystem
patch series!

> 
> > 
> > So take the more innocuous path to provide a helper that parallels
> > request_percpu_irq(), with an affinity as a bonus argument.
> > 
> > Yes, request_percpu_irq_affinity() is a bit of a mouthful.
> > 
> > Tested-by: Will Deacon <will@...nel.org>
> > Signed-off-by: Marc Zyngier <maz@...nel.org>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>

Thanks,

	M.

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