diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/smpboot_32.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c index 8144aa3a1ed..147af81f70e 100644 --- a/arch/x86/kernel/smpboot_32.c +++ b/arch/x86/kernel/smpboot_32.c @@ -711,10 +711,6 @@ static int __cpuinit __smp_prepare_cpu(int cpu) int apicid, ret; apicid = per_cpu(x86_cpu_to_apicid, cpu); - if (apicid == BAD_APICID) { - ret = -ENODEV; - goto exit; - } info.complete = &done; info.apicid = apicid; @@ -952,10 +948,22 @@ void __init native_smp_prepare_boot_cpu(void) int __cpuinit native_cpu_up(unsigned int cpu) { + int apicid = cpu_present_to_apicid(cpu); unsigned long flags; -#ifdef CONFIG_HOTPLUG_CPU int ret = 0; + WARN_ON(irqs_disabled()); + + Dprintk("++++++++++++++++++++=_---CPU UP %u\n", cpu); + + if (apicid == BAD_APICID || apicid == boot_cpu_physical_apicid || + !physid_isset(apicid, phys_cpu_present_map)) { + printk(KERN_ERR "%s: bad cpu %d\n", __func__, cpu); + return -EINVAL; + } + +#ifdef CONFIG_HOTPLUG_CPU + /* * We do warm boot only on cpus that had booted earlier * Otherwise cold boot is all handled from smp_boot_cpus(). |