| Dan Williams | 18da2c9 | 2015-06-09 14:13:37 -0400 | [diff] [blame] | 1 | menuconfig LIBNVDIMM |
| Dan Williams | b94d523 | 2015-05-19 22:54:31 -0400 | [diff] [blame] | 2 | tristate "NVDIMM (Non-Volatile Memory Device) Support" |
| 3 | depends on PHYS_ADDR_T_64BIT |
| 4 | depends on BLK_DEV |
| 5 | help |
| 6 | Generic support for non-volatile memory devices including |
| 7 | ACPI-6-NFIT defined resources. On platforms that define an |
| 8 | NFIT, or otherwise can discover NVDIMM resources, a libnvdimm |
| 9 | bus is registered to advertise PMEM (persistent memory) |
| 10 | namespaces (/dev/pmemX) and BLK (sliding mmio window(s)) |
| 11 | namespaces (/dev/ndX). A PMEM namespace refers to a memory |
| 12 | resource that may span multiple DIMMs and support DAX (see |
| 13 | CONFIG_DAX). A BLK namespace refers to an NVDIMM control |
| 14 | region which exposes an mmio register set for windowed |
| 15 | access mode to non-volatile memory. |
| Dan Williams | 18da2c9 | 2015-06-09 14:13:37 -0400 | [diff] [blame] | 16 | |
| 17 | if LIBNVDIMM |
| 18 | |
| 19 | config BLK_DEV_PMEM |
| 20 | tristate "PMEM: Persistent memory block device support" |
| 21 | default LIBNVDIMM |
| 22 | depends on HAS_IOMEM |
| 23 | help |
| 24 | Memory ranges for PMEM are described by either an NFIT |
| 25 | (NVDIMM Firmware Interface Table, see CONFIG_NFIT_ACPI), a |
| 26 | non-standard OEM-specific E820 memory type (type-12, see |
| 27 | CONFIG_X86_PMEM_LEGACY), or it is manually specified by the |
| 28 | 'memmap=nn[KMG]!ss[KMG]' kernel command line (see |
| 29 | Documentation/kernel-parameters.txt). This driver converts |
| 30 | these persistent memory ranges into block devices that are |
| 31 | capable of DAX (direct-access) file system mappings. See |
| 32 | Documentation/nvdimm/nvdimm.txt for more details. |
| 33 | |
| 34 | Say Y if you want to use an NVDIMM |
| 35 | |
| Dan Williams | 8c2f7e8 | 2015-06-25 04:20:04 -0400 | [diff] [blame^] | 36 | config BTT |
| 37 | def_bool y |
| 38 | |
| Dan Williams | 18da2c9 | 2015-06-09 14:13:37 -0400 | [diff] [blame] | 39 | endif |