linux-kernel - Re: [RFC PATCH 5/7] libnvdimm, e820: make CONFIG_X86_PMEM

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Message-ID: <20150815155846.GA26248@lst.de>
Date:	Sat, 15 Aug 2015 17:58:46 +0200
From:	Christoph Hellwig <hch@....de>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Christoph Hellwig <hch@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Boaz Harrosh <boaz@...xistor.com>,
	Rik van Riel <riel@...hat.com>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
	david <david@...morbit.com>, Ingo Molnar <mingo@...nel.org>,
	Linux MM <linux-mm@...ck.org>, Mel Gorman <mgorman@...e.de>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>
Subject: Re: [RFC PATCH 5/7] libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a
	tristate option

On Sat, Aug 15, 2015 at 08:28:35AM -0700, Dan Williams wrote:
> I'm not grokking the argument against allowing this functionality to
> be modular.

You're adding a another layer of platform_devices just to make a tivially
small piece of code modular so that you can hook into it.  I don't think
that's a good reason, and neither is the after thought of preventing
potentially future buggy firmware.
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