diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/topology.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c index 67a0e1baa28..296355292c7 100644 --- a/arch/i386/kernel/topology.c +++ b/arch/i386/kernel/topology.c @@ -41,6 +41,15 @@ int arch_register_cpu(int num){ parent = &node_devices[node].node; #endif /* CONFIG_NUMA */ + /* + * CPU0 cannot be offlined due to several + * restrictions and assumptions in kernel. This basically + * doesnt add a control file, one cannot attempt to offline + * BSP. + */ + if (!num) + cpu_devices[num].cpu.no_control = 1; + return register_cpu(&cpu_devices[num].cpu, num, parent); } |