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authorBrian Gerst <brgerst@gmail.com>2009-01-27 12:56:48 +0900
committerTejun Heo <tj@kernel.org>2009-01-27 12:56:48 +0900
commit34019be1cd2941128b5de6d7c0fbdb51f967d268 (patch)
treeff7dab4188cb42306bef7640fe9a947765896de1
parent1688401a0fddba8991aa5c0943b8ae9583998d60 (diff)
x86: don't assume boot cpu is #0
Impact: minor cleanup Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r--arch/x86/kernel/setup_percpu.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 36c2e81dfc3..be77f1a1231 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -15,6 +15,7 @@
#include <asm/highmem.h>
#include <asm/proto.h>
#include <asm/cpumask.h>
+#include <asm/cpu.h>
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
# define DBG(x...) printk(KERN_DEBUG x)
@@ -37,7 +38,7 @@ EXPORT_PER_CPU_SYMBOL(this_cpu_off);
#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
- [0] = BOOT_PERCPU_OFFSET,
+ [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET,
};
EXPORT_SYMBOL(__per_cpu_offset);
@@ -101,10 +102,10 @@ void __init setup_per_cpu_areas(void)
early_per_cpu_map(x86_cpu_to_node_map, cpu);
#endif
/*
- * Up to this point, CPU0 has been using .data.init
- * area. Reload %gs offset for CPU0.
+ * Up to this point, the boot CPU has been using .data.init
+ * area. Reload %gs offset for the boot CPU.
*/
- if (cpu == 0)
+ if (cpu == boot_cpu_id)
load_gs_base(cpu);
#endif