Re: [Linux-nvdimm] [PATCH 0/2] e820: Fix handling of NvDIMM chips

From: Dan Williams
Date: Wed Feb 18 2015 - 20:03:07 EST

On Wed, Feb 18, 2015 at 4:47 PM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
> On Wed, Feb 18, 2015 at 10:15:32AM -0800, Dan Williams wrote:
>> In fact it was originally "type-6" until ACPI 5 claimed that number
>> for official use, so these platforms, with early proof-of-concept
>> nvdimm support, have already gone through one transition to a new
>> number. They need to do the same once an official number for nvdimm
>> support is published.
>> Put another way, these early platforms are already using out-of-tree
>> patches for nvdimm enabling. They can continue to do so, or switch to
>> standard methods when the standard is published.
> Not supporting hardware that is widely avaiable (I have some, too)
> is not very user friendly.

Yes, as I agreed with Ingo, allowing a driver to assume control of an
unknown memory type with a warning or a kernel taint seems fine.
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