1 files changed, 26 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 0420418f317a..e29b275e09e0 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -33,6 +33,7 @@
 #include <linux/unistd.h>
 #include <linux/serial.h>
 #include <linux/serial_8250.h>
+#include <linux/bootmem.h>
 #include <asm/io.h>
 #include <asm/kdump.h>
 #include <asm/prom.h>
@@ -654,3 +655,28 @@ void cpu_die(void)
         if (ppc_md.cpu_die)
                 ppc_md.cpu_die();
 }
+
+#ifdef CONFIG_SMP
+void __init setup_per_cpu_areas(void)
+{
+        int i;
+        unsigned long size;
+        char *ptr;
+
+        /* Copy section for each CPU (we discard the original) */
+        size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
+#ifdef CONFIG_MODULES
+        if (size < PERCPU_ENOUGH_ROOM)
+                size = PERCPU_ENOUGH_ROOM;
+#endif
+
+        for_each_cpu(i) {
+                ptr = alloc_bootmem_node(NODE_DATA(cpu_to_node(i)), size);
+                if (!ptr)
+                        panic("Cannot allocate cpu data for CPU %d\n", i);
+
+                paca[i].data_offset = ptr - __per_cpu_start;
+                memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
+        }
+}
+#endif