Re: [PATCH v3 09/21] libnd, nd_pmem: add libnd support to the pmem driver

From: Christoph Hellwig
Date: Sat May 23 2015 - 10:39:55 EST


On Wed, May 20, 2015 at 04:57:00PM -0400, Dan Williams wrote:
> nd_pmem attaches to persistent memory regions and namespaces emitted by
> the libnd subsystem, and, same as the original pmem driver, presents the
> system-physical-address range as a block device.
>
> The existing e820-type-12 to pmem setup is converted to a full libnd bus
> that emits an nd_namespace_io device.

This looks completely bonkers. If you want to pretend the legacy
e820 NVDIMMs fit into your new world do that directly in
arch/x86/kernel/pmem.c instead of splitting it over two files.
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