linux-kernel - Re: [PATCH v3] irqchip/riscv-imsic: Add kernel parameter to disable IPIs

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Message-ID: <CAK9=C2VvbwDuJh-Xi865d7ipjBO781hF+yQL7pPEef4wbkijBA@mail.gmail.com>
Date: Thu, 3 Jul 2025 10:23:18 +0530
From: Anup Patel <apatel@...tanamicro.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: Jonathan Corbet <corbet@....net>, Anup Patel <anup@...infault.org>, 
	Atish Patra <atish.patra@...ux.dev>, Palmer Dabbelt <palmer@...belt.com>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Alexandre Ghiti <alex@...ti.fr>, 
	Andrew Jones <ajones@...tanamicro.com>, linux-doc@...r.kernel.org, 
	linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] irqchip/riscv-imsic: Add kernel parameter to disable IPIs

On Thu, Jul 3, 2025 at 1:18 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> On Wed, Jul 02 2025 at 17:54, Anup Patel wrote:
> >  #include <linux/cpu.h>
> >  #include <linux/export.h>
>
>             ^^^ Neither in tip/irq/drivers nor in Linus tree ...
>
> patching file drivers/irqchip/irq-riscv-imsic-early.c
> Hunk #1 FAILED at 9.

I accidentally based this patch upon my MPXY RPMI patches.
Let me re-base this on Linux-6.16-rc4 in the next revision.

>
> >  #include <linux/interrupt.h>
> > +#include <linux/init.h>
> >  #include <linux/io.h>
> >  #include <linux/irq.h>
> >  #include <linux/irqchip.h>
> > @@ -22,6 +23,14 @@
> >  #include "irq-riscv-imsic-state.h"
> >
> >  static int imsic_parent_irq;
> > +bool imsic_noipi;
>
> __ro_after_init? No?

Yes, this should be __ro_after_init.
I will update in the next revision.

Regards,
Anup