diff options
Diffstat (limited to 'arch/x86/kernel/smpboot.c')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 9b4401115ea..763d815e27a 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -48,6 +48,8 @@ #include <linux/err.h> #include <linux/nmi.h> #include <linux/tboot.h> +#include <linux/stackprotector.h> +#include <linux/gfp.h> #include <asm/acpi.h> #include <asm/desc.h> @@ -67,6 +69,7 @@ #include <linux/mc146818rtc.h> #include <asm/smpboot_hooks.h> +#include <asm/i8259.h> #ifdef CONFIG_X86_32 u8 apicid_2_node[MAX_APICID]; @@ -240,7 +243,10 @@ static void __cpuinit smp_callin(void) end_local_APIC_setup(); map_cpu_to_logical_apicid(); - notify_cpu_starting(cpuid); + /* + * Need to setup vector mappings before we enable interrupts. + */ + setup_vector_irq(smp_processor_id()); /* * Get our bogomips. * @@ -257,6 +263,8 @@ static void __cpuinit smp_callin(void) */ smp_store_cpu_info(cpuid); + notify_cpu_starting(cpuid); + /* * Allow the master to continue. */ @@ -286,9 +294,9 @@ notrace static void __cpuinit start_secondary(void *unused) check_tsc_sync_target(); if (nmi_watchdog == NMI_IO_APIC) { - disable_8259A_irq(0); + legacy_pic->chip->mask(0); enable_NMI_through_LVT0(); - enable_8259A_irq(0); + legacy_pic->chip->unmask(0); } #ifdef CONFIG_X86_32 @@ -315,7 +323,6 @@ notrace static void __cpuinit start_secondary(void *unused) */ ipi_call_lock(); lock_vector_lock(); - __setup_vector_irq(smp_processor_id()); set_cpu_online(smp_processor_id(), true); unlock_vector_lock(); ipi_call_unlock(); @@ -325,6 +332,9 @@ notrace static void __cpuinit start_secondary(void *unused) /* enable local interrupts */ local_irq_enable(); + /* to prevent fake stack check failure in clock setup */ + boot_init_stack_canary(); + x86_cpuinit.setup_percpu_clockev(); wmb(); @@ -1212,11 +1222,12 @@ __init void prefill_possible_map(void) total_cpus = max_t(int, possible, num_processors + disabled_cpus); - if (possible > CONFIG_NR_CPUS) { + /* nr_cpu_ids could be reduced via nr_cpus= */ + if (possible > nr_cpu_ids) { printk(KERN_WARNING "%d Processors exceeds NR_CPUS limit of %d\n", - possible, CONFIG_NR_CPUS); - possible = CONFIG_NR_CPUS; + possible, nr_cpu_ids); + possible = nr_cpu_ids; } printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", |