diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index b3a1a5d..76c6115 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1426,10 +1426,14 @@
 
 source "mm/Kconfig"
 
+config X86_PMEM_LEGACY_DEVICE
+	bool
+
 config X86_PMEM_LEGACY
-	bool "Support non-standard NVDIMMs and ADR protected memory"
+	tristate "Support non-standard NVDIMMs and ADR protected memory"
 	depends on PHYS_ADDR_T_64BIT
 	depends on BLK_DEV
+	select X86_PMEM_LEGACY_DEVICE
 	select LIBNVDIMM
 	help
 	  Treat memory marked using the non-standard e820 type of 12 as used