linux-kernel - RE: ERROR: "paddr_to_nid" [drivers/md/raid1.ko] undefined!

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Date:   Fri, 3 May 2019 20:25:02 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Randy Dunlap <rdunlap@...radead.org>, lkp <lkp@...el.com>,
        Ming Lei <ming.lei@...hat.com>
CC:     "kbuild-all@...org" <kbuild-all@...org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jens Axboe <axboe@...nel.dk>, Omar Sandoval <osandov@...com>,
        Christoph Hellwig <hch@....de>,
        "Wu, Fengguang" <fengguang.wu@...el.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>
Subject: RE: ERROR: "paddr_to_nid" [drivers/md/raid1.ko] undefined!

>> Exporting paddr_to_nid() in arch/ia64/mm/numa.c fixes all of these build errors.
>> Is there a problem with doing that?
>
> I don't see a problem with exporting it.

But I also don't see these build errors.  I'm using the same HEAD commit. I think the
same .config (derived from arch/ia64/configs/bigsur_defconfig.

Big difference is I'm doing a natinve build with a much older compiler (4.6.4)

-Tony