| #include <asm/smp.h> |
| |
| #include <xen/events.h> |
| |
| #include "xen-ops.h" |
| #include "smp.h" |
| |
| |
| static void __init xen_hvm_smp_prepare_boot_cpu(void) |
| { |
| BUG_ON(smp_processor_id() != 0); |
| native_smp_prepare_boot_cpu(); |
| |
| /* |
| * Setup vcpu_info for boot CPU. Secondary CPUs get their vcpu_info |
| * in xen_cpu_up_prepare_hvm(). |
| */ |
| xen_vcpu_setup(0); |
| |
| /* |
| * The alternative logic (which patches the unlock/lock) runs before |
| * the smp bootup up code is activated. Hence we need to set this up |
| * the core kernel is being patched. Otherwise we will have only |
| * modules patched but not core code. |
| */ |
| xen_init_spinlocks(); |
| } |
| |
| static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus) |
| { |
| int cpu; |
| |
| native_smp_prepare_cpus(max_cpus); |
| WARN_ON(xen_smp_intr_init(0)); |
| |
| xen_init_lock_cpu(0); |
| |
| for_each_possible_cpu(cpu) { |
| if (cpu == 0) |
| continue; |
| |
| /* Set default vcpu_id to make sure that we don't use cpu-0's */ |
| per_cpu(xen_vcpu_id, cpu) = XEN_VCPU_ID_INVALID; |
| } |
| } |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| static void xen_hvm_cpu_die(unsigned int cpu) |
| { |
| if (common_cpu_die(cpu) == 0) { |
| xen_smp_intr_free(cpu); |
| xen_uninit_lock_cpu(cpu); |
| xen_teardown_timer(cpu); |
| } |
| } |
| #else |
| static void xen_hvm_cpu_die(unsigned int cpu) |
| { |
| BUG(); |
| } |
| #endif |
| |
| void __init xen_hvm_smp_init(void) |
| { |
| if (!xen_have_vector_callback) |
| return; |
| |
| smp_ops.smp_prepare_cpus = xen_hvm_smp_prepare_cpus; |
| smp_ops.smp_send_reschedule = xen_smp_send_reschedule; |
| smp_ops.cpu_die = xen_hvm_cpu_die; |
| smp_ops.send_call_func_ipi = xen_smp_send_call_function_ipi; |
| smp_ops.send_call_func_single_ipi = xen_smp_send_call_function_single_ipi; |
| smp_ops.smp_prepare_boot_cpu = xen_hvm_smp_prepare_boot_cpu; |
| } |