diff options
Diffstat (limited to 'arch/i386/kernel')
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 13 | ||||
| -rw-r--r-- | arch/i386/kernel/nmi.c | 8 | ||||
| -rw-r--r-- | arch/i386/kernel/paravirt.c | 9 | ||||
| -rw-r--r-- | arch/i386/kernel/smpboot.c | 9 |
4 files changed, 24 insertions, 15 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index 8689d62abd4..8a8bbdaaf38 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -710,11 +710,8 @@ __cpuinit int init_gdt(int cpu, struct task_struct *idle) return 1; } -/* Common CPU init for both boot and secondary CPUs */ -static void __cpuinit _cpu_init(int cpu, struct task_struct *curr) +void __cpuinit cpu_set_gdt(int cpu) { - struct tss_struct * t = &per_cpu(init_tss, cpu); - struct thread_struct *thread = &curr->thread; struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu); /* Reinit these anyway, even if they've already been done (on @@ -722,6 +719,13 @@ static void __cpuinit _cpu_init(int cpu, struct task_struct *curr) the real ones). */ load_gdt(cpu_gdt_descr); set_kernel_gs(); +} + +/* Common CPU init for both boot and secondary CPUs */ +static void __cpuinit _cpu_init(int cpu, struct task_struct *curr) +{ + struct tss_struct * t = &per_cpu(init_tss, cpu); + struct thread_struct *thread = &curr->thread; if (cpu_test_and_set(cpu, cpu_initialized)) { printk(KERN_WARNING "CPU#%d already initialized!\n", cpu); @@ -807,6 +811,7 @@ void __cpuinit cpu_init(void) local_irq_enable(); } + cpu_set_gdt(cpu); _cpu_init(cpu, curr); } diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c index a5e34d65596..1a6f8bb8881 100644 --- a/arch/i386/kernel/nmi.c +++ b/arch/i386/kernel/nmi.c @@ -310,13 +310,7 @@ static int __init setup_nmi_watchdog(char *str) if ((nmi >= NMI_INVALID) || (nmi < NMI_NONE)) return 0; - /* - * If any other x86 CPU has a local APIC, then - * please test the NMI stuff there and send me the - * missing bits. Right now Intel P6/P4 and AMD K7 only. - */ - if ((nmi == NMI_LOCAL_APIC) && (nmi_known_cpu() == 0)) - return 0; /* no lapic support */ + nmi_watchdog = nmi; return 1; } diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c index 3dceab5828f..e55fd05da0f 100644 --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -566,4 +566,11 @@ struct paravirt_ops paravirt_ops = { .irq_enable_sysexit = native_irq_enable_sysexit, .iret = native_iret, }; -EXPORT_SYMBOL(paravirt_ops); + +/* + * NOTE: CONFIG_PARAVIRT is experimental and the paravirt_ops + * semantics are subject to change. Hence we only do this + * internal-only export of this, until it gets sorted out and + * all lowlevel CPU ops used by modules are separately exported. + */ +EXPORT_SYMBOL_GPL(paravirt_ops); diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index dea7ef9d3e8..8c6c8c52b95 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -596,6 +596,12 @@ static void __cpuinit start_secondary(void *unused) void __devinit initialize_secondary(void) { /* + * switch to the per CPU GDT we already set up + * in do_boot_cpu() + */ + cpu_set_gdt(current_thread_info()->cpu); + + /* * We don't actually need to load the full TSS, * basically just the stack pointer and the eip. */ @@ -972,9 +978,6 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu) /* Stack for startup_32 can be just as for start_secondary onwards */ stack_start.esp = (void *) idle->thread.esp; - start_pda = cpu_pda(cpu); - cpu_gdt_descr = per_cpu(cpu_gdt_descr, cpu); - irq_ctx_init(cpu); x86_cpu_to_apicid[cpu] = apicid; |