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authorDan Williams <dan.j.williams@intel.com>2015-05-31 15:02:11 -0400
committerDan Williams <dan.j.williams@intel.com>2015-06-24 21:24:10 -0400
commit3d88002e4a7bd40f355550284c6cd140e6fe29dc (patch)
tree5934604ed6e21153ada873c7042c4037ef20ecdc /drivers/acpi/nfit.c
parent1f7df6f88b9245a7f2d0f8ecbc97dc88c8d0d8e1 (diff)
downloadlinux-3d88002e4a7bd40f355550284c6cd140e6fe29dc.tar.bz2
libnvdimm: support for legacy (non-aliasing) nvdimms
The libnvdimm region driver is an intermediary driver that translates non-volatile "region"s into "namespace" sub-devices that are surfaced by persistent memory block-device drivers (PMEM and BLK). ACPI 6 introduces the concept that a given nvdimm may simultaneously offer multiple access modes to its media through direct PMEM load/store access, or windowed BLK mode. Existing nvdimms mostly implement a PMEM interface, some offer a BLK-like mode, but never both as ACPI 6 defines. If an nvdimm is single interfaced, then there is no need for dimm metadata labels. For these devices we can take the region boundaries directly to create a child namespace device (nd_namespace_io). Acked-by: Christoph Hellwig <hch@lst.de> Tested-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi/nfit.c')
-rw-r--r--drivers/acpi/nfit.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index 068f69d70c9e..ce290748fe36 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -780,6 +780,7 @@ static struct attribute_group acpi_nfit_region_attribute_group = {
static const struct attribute_group *acpi_nfit_region_attribute_groups[] = {
&nd_region_attribute_group,
&nd_mapping_attribute_group,
+ &nd_device_attribute_group,
&acpi_nfit_region_attribute_group,
NULL,
};