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

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Date:	Thu, 19 Feb 2015 11:31:42 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Boaz Harrosh <boaz@...xistor.com>
Cc:	Dan Williams <dan.j.williams@...el.com>,
	Christoph Hellwig <hch@...radead.org>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Ingo Molnar <mingo@...hat.com>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>, x86@...nel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Roger C. Pao" <rcpao.enmotus@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-nvdimm <linux-nvdimm@...1.01.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [Linux-nvdimm] [PATCH 0/2] e820: Fix handling of NvDIMM chips


* Boaz Harrosh <boaz@...xistor.com> wrote:

> On 02/19/2015 12:01 PM, Ingo Molnar wrote:
> > 
> > * Dan Williams <dan.j.williams@...el.com> wrote:
> > 
> >> On Wed, Feb 18, 2015 at 4:47 PM, Christoph Hellwig <hch@...radead.org> 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.
> > 
> > If someone cooks up such a patch I can apply it.
> > 
> > Thanks,
> > 
> > 	Ingo
> > 
> 
> I will submit a new version of my patch-1 with the 
> pr_warn.
> 
> Or did you already apply my patch-1 and you want one on 
> top? What is the URL of your tree please?

New patch please, and please also Cc: everyone who 
expressed interest in the thread and who wasn't Cc:-ed to 
the original patch.

Thanks,

	Ingo
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