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-rw-r--r--arch/ppc64/Kconfig4
-rw-r--r--include/asm-ppc64/mmzone.h5
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index 85f8fcf44b6..3c8bfd0345c 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -211,6 +211,10 @@ config ARCH_FLATMEM_ENABLE
source "mm/Kconfig"
+config HAVE_ARCH_EARLY_PFN_TO_NID
+ bool
+ default y
+
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and
# between a node's start and end pfns, it may not
diff --git a/include/asm-ppc64/mmzone.h b/include/asm-ppc64/mmzone.h
index cbfc5ecfe87..ecc4b07507d 100644
--- a/include/asm-ppc64/mmzone.h
+++ b/include/asm-ppc64/mmzone.h
@@ -90,4 +90,9 @@ static inline int pa_to_nid(unsigned long pa)
#define discontigmem_pfn_valid(pfn) ((pfn) < num_physpages)
#endif /* CONFIG_DISCONTIGMEM */
+
+#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
+#define early_pfn_to_nid(pfn) pa_to_nid(((unsigned long)pfn) << PAGE_SHIFT)
+#endif
+
#endif /* _ASM_MMZONE_H_ */