From 3d88002e4a7bd40f355550284c6cd140e6fe29dc Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sun, 31 May 2015 15:02:11 -0400 Subject: 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 Tested-by: Toshi Kani Signed-off-by: Dan Williams --- drivers/acpi/nfit.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/acpi/nfit.c') 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, }; -- cgit v1.2.3