diff options
Diffstat (limited to 'arch/x86/xen/smp.c')
| -rw-r--r-- | arch/x86/xen/smp.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index aafc5443740..94e69000f98 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -35,9 +35,10 @@ #include "xen-ops.h" #include "mmu.h" -static cpumask_t cpu_initialized_map; -static DEFINE_PER_CPU(int, resched_irq); -static DEFINE_PER_CPU(int, callfunc_irq); +static cpumask_t xen_cpu_initialized_map; +static DEFINE_PER_CPU(int, resched_irq) = -1; +static DEFINE_PER_CPU(int, callfunc_irq) = -1; +static DEFINE_PER_CPU(int, debug_irq) = -1; /* * Structure and data for smp_call_function(). This is designed to minimise @@ -72,6 +73,7 @@ static __cpuinit void cpu_bringup_and_idle(void) int cpu = smp_processor_id(); cpu_init(); + xen_enable_sysenter(); preempt_disable(); per_cpu(cpu_state, cpu) = CPU_ONLINE; @@ -88,9 +90,7 @@ static __cpuinit void cpu_bringup_and_idle(void) static int xen_smp_intr_init(unsigned int cpu) { int rc; - const char *resched_name, *callfunc_name; - - per_cpu(resched_irq, cpu) = per_cpu(callfunc_irq, cpu) = -1; + const char *resched_name, *callfunc_name, *debug_name; resched_name = kasprintf(GFP_KERNEL, "resched%d", cpu); rc = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, @@ -114,6 +114,14 @@ static int xen_smp_intr_init(unsigned int cpu) goto fail; per_cpu(callfunc_irq, cpu) = rc; + debug_name = kasprintf(GFP_KERNEL, "debug%d", cpu); + rc = bind_virq_to_irqhandler(VIRQ_DEBUG, cpu, xen_debug_interrupt, + IRQF_DISABLED | IRQF_PERCPU | IRQF_NOBALANCING, + debug_name, NULL); + if (rc < 0) + goto fail; + per_cpu(debug_irq, cpu) = rc; + return 0; fail: @@ -121,6 +129,8 @@ static int xen_smp_intr_init(unsigned int cpu) unbind_from_irqhandler(per_cpu(resched_irq, cpu), NULL); if (per_cpu(callfunc_irq, cpu) >= 0) unbind_from_irqhandler(per_cpu(callfunc_irq, cpu), NULL); + if (per_cpu(debug_irq, cpu) >= 0) + unbind_from_irqhandler(per_cpu(debug_irq, cpu), NULL); return rc; } @@ -179,11 +189,11 @@ void __init xen_smp_prepare_cpus(unsigned int max_cpus) if (xen_smp_intr_init(0)) BUG(); - cpu_initialized_map = cpumask_of_cpu(0); + xen_cpu_initialized_map = cpumask_of_cpu(0); /* Restrict the possible_map according to max_cpus. */ while ((num_possible_cpus() > 1) && (num_possible_cpus() > max_cpus)) { - for (cpu = NR_CPUS-1; !cpu_isset(cpu, cpu_possible_map); cpu--) + for (cpu = NR_CPUS - 1; !cpu_possible(cpu); cpu--) continue; cpu_clear(cpu, cpu_possible_map); } @@ -210,7 +220,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) struct vcpu_guest_context *ctxt; struct gdt_page *gdt = &per_cpu(gdt_page, cpu); - if (cpu_test_and_set(cpu, cpu_initialized_map)) + if (cpu_test_and_set(cpu, xen_cpu_initialized_map)) return 0; ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL); |