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-rw-r--r--arch/powerpc/mm/mem.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 2fd57fa48429..5f844337de21 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -116,6 +116,16 @@ int memory_add_physaddr_to_nid(u64 start)
}
#endif
+int __weak create_section_mapping(unsigned long start, unsigned long end)
+{
+ return -ENODEV;
+}
+
+int __weak remove_section_mapping(unsigned long start, unsigned long end)
+{
+ return -ENODEV;
+}
+
int arch_add_memory(int nid, u64 start, u64 size, bool for_device)
{
struct pglist_data *pgdata;
@@ -239,8 +249,14 @@ static int __init mark_nonram_nosave(void)
static bool zone_limits_final;
+/*
+ * The memory zones past TOP_ZONE are managed by generic mm code.
+ * These should be set to zero since that's what every other
+ * architecture does.
+ */
static unsigned long max_zone_pfns[MAX_NR_ZONES] = {
- [0 ... MAX_NR_ZONES - 1] = ~0UL
+ [0 ... TOP_ZONE ] = ~0UL,
+ [TOP_ZONE + 1 ... MAX_NR_ZONES - 1] = 0
};
/*