linux-kernel - Re: linux-next: build failure in Linus' tree

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Date:   Sun, 9 Feb 2020 13:24:18 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Zenghui Yu <yuzenghui@...wei.com>, Marc Zyngier <maz@...nel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure in Linus' tree

On Sun, Feb 9, 2020 at 1:08 PM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Just building Linus' tree, today's linux-next build (arm
> multi_v7_defconfig) failed like this:
>
> arm-linux-gnueabi-ld: drivers/irqchip/irq-gic-v3-its.o: in function `its_vpe_irq_domain_alloc':
> irq-gic-v3-its.c:(.text+0x3d50): undefined reference to `__aeabi_uldivmod'
>
> Caused by commit
>
>   4e6437f12d6e ("irqchip/gic-v4.1: Ensure L2 vPE table is allocated at RD level")

Ahh. 64-bit divides without using do_div() and friends.

Is GICv4 even relevant for 32-bit ARM?

            Linus