[PATCH v7 07/10] dax/kmem: resolve default online type at probe time
Gregory Price <[email protected]> Sun, 12 Jul 2026 11:45:01 -0400
| Newsgroups | dev.linux.lists.nvdimm,dev.linux.lists.driver-core,org.kernel.vger.linux-cxl,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
Resolve the default online type in kmem at probe time explicitly instead of implicitly inheriting the system default by calling add_memory_driver_managed(). No behavioral change at this point (still system default). Signed-off-by: Gregory Price <[email protected]> --- drivers/dax/kmem.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c index 592171ec10f49..38ed5c4e9c83d 100644 --- a/drivers/dax/kmem.c +++ b/drivers/dax/kmem.c @@ -73,6 +73,7 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax) mhp_t mhp_flags; int numa_node; int adist = MEMTIER_DEFAULT_DAX_ADISTANCE; + int online_type = mhp_get_default_online_type(); /* * Ensure good NUMA information for the persistent memory. @@ -172,8 +173,9 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax) * Ensure that future kexec'd kernels will not treat * this as RAM automatically. */ - rc = add_memory_driver_managed(data->mgid, range.start, - range_len(&range), kmem_name, mhp_flags); + rc = __add_memory_driver_managed(data->mgid, range.start, + range_len(&range), kmem_name, mhp_flags, + online_type); if (rc) { dev_warn(dev, "mapping%d: %#llx-%#llx memory add failed\n", -- 2.53.0-Meta