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-rw-r--r--init/main.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/init/main.c b/init/main.c
index 141e8896d25..9cf6b307bfd 100644
--- a/init/main.c
+++ b/init/main.c
@@ -333,6 +333,7 @@ static void __init setup_per_cpu_areas(void)
{
unsigned long size, i;
char *ptr;
+ unsigned long nr_possible_cpus = num_possible_cpus();
/* Copy section for each CPU (we discard the original) */
size = ALIGN(__per_cpu_end - __per_cpu_start, SMP_CACHE_BYTES);
@@ -340,12 +341,16 @@ static void __init setup_per_cpu_areas(void)
if (size < PERCPU_ENOUGH_ROOM)
size = PERCPU_ENOUGH_ROOM;
#endif
+ ptr = alloc_bootmem(size * nr_possible_cpus);
- ptr = alloc_bootmem(size * NR_CPUS);
-
- for (i = 0; i < NR_CPUS; i++, ptr += size) {
+ for (i = 0; i < NR_CPUS; i++) {
+ if (!cpu_possible(i)) {
+ __per_cpu_offset[i] = (char*)0 - __per_cpu_start;
+ continue;
+ }
__per_cpu_offset[i] = ptr - __per_cpu_start;
memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);
+ ptr += size;
}
}
#endif /* !__GENERIC_PER_CPU */