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Date: Mon, 23 Feb 2015 07:48:23 -0800 From: Andy Lutomirski <luto@...capital.net> To: Boaz Harrosh <boaz@...xistor.com> Cc: Ingo Molnar <mingo@...hat.com>, Ross Zwisler <ross.zwisler@...ux.intel.com>, X86 ML <x86@...nel.org>, linux-kernel <linux-kernel@...r.kernel.org>, "Roger C. Pao" <rcpao.enmotus@...il.com>, Dan Williams <dan.j.williams@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Linus Torvalds <torvalds@...ux-foundation.org>, linux-nvdimm <linux-nvdimm@...ts.01.org>, "H. Peter Anvin" <hpa@...or.com>, Matthew Wilcox <willy@...ux.intel.com>, Christoph Hellwig <hch@...radead.org> Subject: Re: [PATCH 3A/3 good] e820: Add the unknown-12 Memory type (DDR3-NvDIMM) On Mon, Feb 23, 2015 at 4:46 AM, Boaz Harrosh <boaz@...xistor.com> wrote: > > There are multiple vendors of DDR3 NvDIMMs out in the market today. > At various stages of development/production. It is estimated that > there are already more the 100ds of thousands chips sold to > testers and sites. > > All the BIOS vendors I know of, tagged these chips at e820 table > as type-12 memory. > I have no problem with this patch. > Now the ACPI comity, as far as I know, did not yet define a > standard type for NvDIMM. Also, as far as I know any NvDIMM > standard will only be defined for DDR4. So DDR3 NvDIMM is > probably stuck with this none STD type. s/comity/committee? > > I Wish and call the ACPI comity to Define that NvDIMM is type-12. > Also for DDR4 > > In this patch I name type-12 "unknown-12". This is because of > ACPI politics that refuse to reserve type-12 as DDR3-NvDIMM > and members keep saying: > "What if ACPI assigns type-12 for something else in future" > > [And I say: Then just don't. Please?] Good luck :) --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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