linux-kernel - Problems with phys_to_pfn

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Date:	Wed, 23 Dec 2015 21:56:57 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-s390 <linux-s390@...r.kernel.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Problems with phys_to_pfn_t in linux-next and s390

s390:defconfig:

ERROR: "phys_to_pfn_t" [drivers/s390/block/dcssblk.ko] undefined!

s390 does not set CONFIG_HAS_IOMEM, which is required for phys_to_pfn_t to exist.

Introduced with commit e014f77c4b ("mm-dax-pmem-introduce-pfn_t-v3") and
possibly earlier.

Guenter
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