diff options
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index a4bcbacdbe0b..a135239badb7 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1221,17 +1221,6 @@ static void dbg_restore_debug_regs(void) #define dbg_restore_debug_regs() #endif /* ! CONFIG_KGDB */ -static void wait_for_master_cpu(int cpu) -{ - /* - * wait for ACK from master CPU before continuing - * with AP initialization - */ - WARN_ON(cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)); - while (!cpumask_test_cpu(cpu, cpu_callout_mask)) - cpu_relax(); -} - /* * cpu_init() initializes state that is per-CPU. Some data is already * initialized (naturally) in the bootstrap process, such as the GDT @@ -1247,17 +1236,16 @@ void cpu_init(void) struct task_struct *me; struct tss_struct *t; unsigned long v; - int cpu = stack_smp_processor_id(); + int cpu; int i; - wait_for_master_cpu(cpu); - /* * Load microcode on this cpu if a valid microcode is available. * This is early microcode loading procedure. */ load_ucode_ap(); + cpu = stack_smp_processor_id(); t = &per_cpu(init_tss, cpu); oist = &per_cpu(orig_ist, cpu); @@ -1269,6 +1257,9 @@ void cpu_init(void) me = current; + if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) + panic("CPU#%d already initialized!\n", cpu); + pr_debug("Initializing CPU#%d\n", cpu); clear_in_cr4(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE); @@ -1345,10 +1336,14 @@ void cpu_init(void) struct tss_struct *t = &per_cpu(init_tss, cpu); struct thread_struct *thread = &curr->thread; - wait_for_master_cpu(cpu); - show_ucode_info_early(); + if (cpumask_test_and_set_cpu(cpu, cpu_initialized_mask)) { + printk(KERN_WARNING "CPU#%d already initialized!\n", cpu); + for (;;) + local_irq_enable(); + } + printk(KERN_INFO "Initializing CPU#%d\n", cpu); if (cpu_has_vme || cpu_has_tsc || cpu_has_de) |