linux-kernel - Re: 5.10-rc0: build error in ipi.c

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Date:   Thu, 15 Oct 2020 16:23:15 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Pavel Machek <pavel@....cz>,
        kernel list <linux-kernel@...r.kernel.org>
Cc:     Marc Zyngier <maz@...nel.org>
Subject: Re: 5.10-rc0: build error in ipi.c

On Thu, Oct 15 2020 at 12:12, Pavel Machek wrote:

Cc+ Marc

> I'm getting build problems in 5.10-rc0 in config for n900. ARM board.
>
> CONFIG_SMP=y
> CONFIG_SMP_ON_UP=y
>
>
>   CC      net/devres.o
>   kernel/irq/ipi.c: In function ‘irq_reserve_ipi’:
>   kernel/irq/ipi.c:84:9: error: implicit declaration of function
>   ‘__irq_domain_alloc_irqs’; did you mean ‘irq_domain_alloc_irqs’?
>   [-Werror=implicit-function-declaration]
>     virq = __irq_domain_alloc_irqs(domain, virq, nr_irqs,
>   NUMA_NO_NODE,
>            ^~~~~~~~~~~~~~~~~~~~~~~
> 	            irq_domain_alloc_irqs
> 		    cc1: some warnings being treated as errors
> 		    make[2]: *** [scripts/Makefile.build:283:
>   kernel/irq/ipi.o] Error 1

That probably comes from the ipi as irq rework for arm/arm64.

Thanks,

        tglx