linux-kernel - Re: [PATCH v2 5/9] x86, pmem: push fallback handling to arch code

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Message-ID: <20150826124124.GA7613@lst.de>
Date:	Wed, 26 Aug 2015 14:41:24 +0200
From:	Christoph Hellwig <hch@....de>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	linux-nvdimm@...ts.01.org, boaz@...xistor.com,
	Toshi Kani <toshi.kani@...com>, david@...morbit.com,
	linux-kernel@...r.kernel.org, mingo@...nel.org, linux-mm@...ck.org,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, hpa@...or.com,
	ross.zwisler@...ux.intel.com, hch@....de
Subject: Re: [PATCH v2 5/9] x86, pmem: push fallback handling to arch code

I like the intent behind this, but not the implementation.

I think the right approach is to keep the defaults in linux/pmem.h
and simply not set CONFIG_ARCH_HAS_PMEM_API for x86-32.
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