linux-hardening - Re: [RFC][PATCH v3 09/16] genirq/irqdesc: Have nr

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Message-ID: <87cy7q9k8y.ffs@tglx>
Date: Tue, 16 Sep 2025 23:10:21 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Eugen Hristev <eugen.hristev@...aro.org>, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org, andersson@...nel.org,
 pmladek@...e.com, rdunlap@...radead.org, corbet@....net, david@...hat.com,
 mhocko@...e.com
Cc: tudor.ambarus@...aro.org, mukesh.ojha@....qualcomm.com,
 linux-arm-kernel@...ts.infradead.org, linux-hardening@...r.kernel.org,
 jonechou@...gle.com, rostedt@...dmis.org, linux-doc@...r.kernel.org,
 devicetree@...r.kernel.org, Eugen Hristev <eugen.hristev@...aro.org>
Subject: Re: [RFC][PATCH v3 09/16] genirq/irqdesc: Have nr_irqs as non-static

On Fri, Sep 12 2025 at 18:08, Eugen Hristev wrote:
> nr_irqs is required for debugging the kernel, and needs to be
> accessible for kmemdump into vmcoreinfo.

That's a patently bad idea.

Care to grep how many instances of 'nr_irqs' variables are in the
kernel?

That name is way too generic to be made global.

Thanks,

        tglx