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| author | Dan Williams <dan.j.williams@intel.com> | 2016-06-06 17:42:38 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-07-07 17:11:09 -0700 |
| commit | 29b9aa0aa3837c93ecd804dd3ada39b8cc75607d (patch) | |
| tree | c3ee3dbe22fb1ec4a71ff887f382b3eac815d4b3 /drivers/nvdimm/Kconfig | |
| parent | 81ed4e3670853e4cebad88aeffc0ba1d90d4d6ed (diff) | |
| download | lwn-29b9aa0aa3837c93ecd804dd3ada39b8cc75607d.tar.gz lwn-29b9aa0aa3837c93ecd804dd3ada39b8cc75607d.zip | |
libnvdimm: introduce devm_nvdimm_memremap(), convert nfit_spa_map() users
In preparation for generically mapping flush hint addresses for both the
BLK and PMEM use case, provide a generic / reference counted mapping
api. Given the fact that a dimm may belong to multiple regions (PMEM
and BLK), the flush hint addresses need to be held valid as long as any
region associated with the dimm is active. This is similar to the
existing BLK-region case where multiple BLK-regions may share an
aperture mapping. Up-level this shared / reference-counted mapping
capability from the nfit driver to a core nvdimm capability.
This eliminates the need for the nd_blk_region.disable() callback. Note
that the removal of nfit_spa_map() and related infrastructure is
deferred to a later patch.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/Kconfig')
| -rw-r--r-- | drivers/nvdimm/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig index 7c8a3bf07884..124c2432ac9c 100644 --- a/drivers/nvdimm/Kconfig +++ b/drivers/nvdimm/Kconfig @@ -1,6 +1,7 @@ menuconfig LIBNVDIMM tristate "NVDIMM (Non-Volatile Memory Device) Support" depends on PHYS_ADDR_T_64BIT + depends on HAS_IOMEM depends on BLK_DEV help Generic support for non-volatile memory devices including @@ -19,7 +20,6 @@ if LIBNVDIMM config BLK_DEV_PMEM tristate "PMEM: Persistent memory block device support" default LIBNVDIMM - depends on HAS_IOMEM select ND_BTT if BTT select ND_PFN if NVDIMM_PFN help |