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| author | Brian Gerst <brgerst@gmail.com> | 2009-02-08 15:58:40 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-09 10:30:30 +0100 |
| commit | 44581a28e805a31661469c4b466b9cd14b36e7b6 (patch) | |
| tree | 090a4259cf5812a234b3dafcb626d20dae078558 /arch | |
| parent | x86: use linker to offset symbols by __per_cpu_load (diff) | |
| download | linux-44581a28e805a31661469c4b466b9cd14b36e7b6.tar.xz linux-44581a28e805a31661469c4b466b9cd14b36e7b6.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/numa_64.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 08d140fbc31b..deb1c1ab7868 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -702,7 +702,7 @@ void __cpuinit numa_set_node(int cpu, int node) } #ifdef CONFIG_DEBUG_PER_CPU_MAPS - if (cpu >= nr_cpu_ids || !per_cpu_offset(cpu)) { + if (cpu >= nr_cpu_ids || !cpu_possible(cpu)) { printk(KERN_ERR "numa_set_node: invalid cpu# (%d)\n", cpu); dump_stack(); return; @@ -790,7 +790,7 @@ int early_cpu_to_node(int cpu) if (early_per_cpu_ptr(x86_cpu_to_node_map)) return early_per_cpu_ptr(x86_cpu_to_node_map)[cpu]; - if (!per_cpu_offset(cpu)) { + if (!cpu_possible(cpu)) { printk(KERN_WARNING "early_cpu_to_node(%d): no per_cpu area!\n", cpu); dump_stack(); |