powerpc/mm: Assume first cpu is boot_cpuid not 0

arch/powerpc/mm/mmu_context_nohash.c assumes the boot cpu
will always have smp_processor_id() == 0. This patch fixes
that assumption

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index ddfd7ad..5ce9984 100644 (file)
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -334,7 +334,7 @@ static int __cpuinit mmu_context_cpu_notify(struct notifier_block *self,
        /* We don't touch CPU 0 map, it's allocated at aboot and kept
         * around forever
         */
-       if (cpu == 0)
+       if (cpu == boot_cpuid)
                return NOTIFY_OK;
 
        switch (action) {
@@ -420,9 +420,11 @@ void __init mmu_context_init(void)
         */
        context_map = alloc_bootmem(CTX_MAP_SIZE);
        context_mm = alloc_bootmem(sizeof(void *) * (last_context + 1));
+#ifndef CONFIG_SMP
        stale_map[0] = alloc_bootmem(CTX_MAP_SIZE);
+#else
+       stale_map[boot_cpuid] = alloc_bootmem(CTX_MAP_SIZE);
 
-#ifdef CONFIG_SMP
        register_cpu_notifier(&mmu_context_cpu_nb);
 #endif