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Date:   Sat, 29 Aug 2020 14:39:11 -0700 (PDT)
From:   David Rientjes <rientjes@...gle.com>
To:     Randy Dunlap <rdunlap@...radead.org>
cc:     linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org
Subject: Re: [PATCH] ia64: fix min_low_pfn/max_low_pfn build errors

On Fri, 28 Aug 2020, Randy Dunlap wrote:

> Fix min_low_pfn/max_low_pfn build errors for arch/ia64/: (e.g.)
> 
>  ERROR: "max_low_pfn" [drivers/rpmsg/virtio_rpmsg_bus.ko] undefined!
>  ERROR: "min_low_pfn" [drivers/rpmsg/virtio_rpmsg_bus.ko] undefined!
>  ERROR: "min_low_pfn" [drivers/hwtracing/intel_th/intel_th_msu.ko] undefined!
>  ERROR: "max_low_pfn" [drivers/hwtracing/intel_th/intel_th_msu.ko] undefined!
>  ERROR: "min_low_pfn" [drivers/crypto/cavium/nitrox/n5pf.ko] undefined!
>  ERROR: "max_low_pfn" [drivers/crypto/cavium/nitrox/n5pf.ko] undefined!
>  ERROR: "max_low_pfn" [drivers/md/dm-integrity.ko] undefined!
>  ERROR: "min_low_pfn" [drivers/md/dm-integrity.ko] undefined!
>  ERROR: "max_low_pfn" [crypto/tcrypt.ko] undefined!
>  ERROR: "min_low_pfn" [crypto/tcrypt.ko] undefined!
>  ERROR: "min_low_pfn" [security/keys/encrypted-keys/encrypted-keys.ko] undefined!
>  ERROR: "max_low_pfn" [security/keys/encrypted-keys/encrypted-keys.ko] undefined!
>  ERROR: "min_low_pfn" [arch/ia64/kernel/mca_recovery.ko] undefined!
>  ERROR: "max_low_pfn" [arch/ia64/kernel/mca_recovery.ko] undefined!
> 
> David suggested just exporting min_low_pfn & max_low_pfn in
> mm/memblock.c:
> https://lore.kernel.org/lkml/alpine.DEB.2.22.394.2006291911220.1118534@chino.kir.corp.google.com/
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: linux-mm@...ck.org
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: Mike Rapoport <rppt@...ux.ibm.com>
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Fenghua Yu <fenghua.yu@...el.com>
> Cc: linux-ia64@...r.kernel.org

Acked-by: David Rientjes <rientjes@...gle.com>

Thanks Randy!

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