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 vendors I know of, tagged these chips as type-12 memory. [THIS IS A CALL FOR ALL NvDIMM Vendors if you have used other then type-12 NvDIMM, please email me and I will add support for it] 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 be defined for DDR4. So DDR3 NvDIMM will continue to be supported by the individual vendors. I Wish and call the ACPI comity to Define that NvDIMM is type-12. Also for DDR4 In this patch I name type-12 "NvDIMM-12", but if there are positive responses I would like to just name it "NvDIMM", For any kind of DDR-X. Actually is there any reason why I should not submit the final version as "NvDIMM" from the get go. Then if the ACPI defines another new type-Y Memory we can name both types "NvDIMM", No? Please comment Signed-off-by: Boaz Harrosh <[email protected]> --- arch/x86/include/uapi/asm/e820.h | 2 +- arch/x86/kernel/e820.c | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/uapi/asm/e820.h b/arch/x86/include/uapi/asm/e820.h index d993e33..a0977e0 100644 --- a/arch/x86/include/uapi/asm/e820.h +++ b/arch/x86/include/uapi/asm/e820.h @@ -32,7 +32,7 @@ #define E820_ACPI 3 #define E820_NVS 4 #define E820_UNUSABLE 5 - +#define E820_NvDIMM_12 12 /* * reserved RAM used by kernel itself diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 8cfd25f..17f7496 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c @@ -149,6 +149,9 @@ static void __init e820_print_type(u32 type) case E820_UNUSABLE: printk(KERN_CONT "unusable"); break; + case E820_NvDIMM_12: + printk(KERN_CONT "NvDIMM-12"); + break; default: printk(KERN_CONT "type %u", type); break; @@ -908,6 +911,7 @@ static inline const char *e820_type_to_string(int e820_type) case E820_NVS: return "ACPI Non-volatile Storage"; case E820_UNUSABLE: return "Unusable memory"; case E820_RESERVED: return "reserved"; + case E820_NvDIMM_12: return "NvDIMM-12"; default: return "reserved-unkown"; } } @@ -922,6 +926,7 @@ static bool _is_reserved_type(int e820_type) case E820_UNUSABLE: return false; case E820_RESERVED: + case E820_NvDIMM_12: default: return true; } -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
