Re: [PATCH 3A/3 good] e820: Add the unknown-12 Memory type (DDR3-NvDIMM)

From: Andy Lutomirski
Date: Mon Feb 23 2015 - 10:48:50 EST

On Mon, Feb 23, 2015 at 4:46 AM, Boaz Harrosh <boaz@xxxxxxxxxxxxx> 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.


> 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 :)

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