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x86: fix abuse of per_cpu_offset
Impact: bug fix Don't use per_cpu_offset() to determine if it valid to access a per-cpu variable for a given cpu number. It is not a valid assumption on x86-64 anymore. Use cpu_possible() instead. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -702,7 +702,7 @@ void __cpuinit numa_set_node(int cpu, int node)
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}
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#ifdef CONFIG_DEBUG_PER_CPU_MAPS
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if (cpu >= nr_cpu_ids || !per_cpu_offset(cpu)) {
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if (cpu >= nr_cpu_ids || !cpu_possible(cpu)) {
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printk(KERN_ERR "numa_set_node: invalid cpu# (%d)\n", cpu);
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dump_stack();
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return;
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@ -790,7 +790,7 @@ int early_cpu_to_node(int cpu)
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if (early_per_cpu_ptr(x86_cpu_to_node_map))
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return early_per_cpu_ptr(x86_cpu_to_node_map)[cpu];
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if (!per_cpu_offset(cpu)) {
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if (!cpu_possible(cpu)) {
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printk(KERN_WARNING
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"early_cpu_to_node(%d): no per_cpu area!\n", cpu);
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dump_stack();
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