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cxl: add dimm_id support for __nvdimm_create()

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Set the cxlds->serial as the dimm_id to be fed to __nvdimm_create(). The
security code uses that as the key description for the security key of the
memory device. The nvdimm unlock code cannot find the respective key
without the dimm_id.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166863357043.80269.4337575149671383294.stgit@djiang5-desk3.ch.intel.com
Link: https://lore.kernel.org/r/166983620459.2734609.10175456773200251184.stgit@djiang5-desk3.ch.intel.com
Link: https://lore.kernel.org/r/166993219918.1995348.10786511454826454601.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang 2022-12-01 14:03:19 -08:00 committed by Dan Williams
parent 15a8348707
commit b5807c80b5
3 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/cxl/core/pmem.c
View File

@ -238,6 +238,13 @@ static struct cxl_nvdimm *cxl_nvdimm_alloc(struct cxl_memdev *cxlmd)
dev->parent = &cxlmd->dev;
dev->bus = &cxl_bus_type;
dev->type = &cxl_nvdimm_type;
/*
* A "%llx" string is 17-bytes vs dimm_id that is max
* NVDIMM_KEY_DESC_LEN
*/
BUILD_BUG_ON(sizeof(cxl_nvd->dev_id) < 17 ||
sizeof(cxl_nvd->dev_id) > NVDIMM_KEY_DESC_LEN);
sprintf(cxl_nvd->dev_id, "%llx", cxlmd->cxlds->serial);
return cxl_nvd;
}

3
drivers/cxl/cxl.h
View File

@ -420,11 +420,14 @@ struct cxl_nvdimm_bridge {
enum cxl_nvdimm_brige_state state;
};
#define CXL_DEV_ID_LEN 19
struct cxl_nvdimm {
struct device dev;
struct cxl_memdev *cxlmd;
struct cxl_nvdimm_bridge *bridge;
struct xarray pmem_regions;
u8 dev_id[CXL_DEV_ID_LEN]; /* for nvdimm, string of 'serial' */
};
struct cxl_pmem_region_mapping {

3
drivers/cxl/pmem.c
View File

@ -117,7 +117,8 @@ static int cxl_nvdimm_probe(struct device *dev)
set_bit(ND_CMD_SET_CONFIG_DATA, &cmd_mask);
nvdimm = __nvdimm_create(cxl_nvb->nvdimm_bus, cxl_nvd,
cxl_dimm_attribute_groups, flags,
cmd_mask, 0, NULL, NULL, cxl_security_ops, NULL);
cmd_mask, 0, NULL, cxl_nvd->dev_id,
cxl_security_ops, NULL);
if (!nvdimm) {
rc = -ENOMEM;
goto out;