コード例 #1
0
void __init xen_setup_vcpu_info_placement(void)
{
	int cpu;

	for_each_possible_cpu(cpu)
		xen_vcpu_setup(cpu);
}
コード例 #2
0
ファイル: enlighten_hvm.c プロジェクト: asmalldev/linux
static int xen_cpu_up_prepare_hvm(unsigned int cpu)
{
	int rc;

	/*
	 * This can happen if CPU was offlined earlier and
	 * offlining timed out in common_cpu_die().
	 */
	if (cpu_report_state(cpu) == CPU_DEAD_FROZEN) {
		xen_smp_intr_free(cpu);
		xen_uninit_lock_cpu(cpu);
	}

	if (cpu_acpi_id(cpu) != U32_MAX)
		per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu);
	else
		per_cpu(xen_vcpu_id, cpu) = cpu;
	xen_vcpu_setup(cpu);

	if (xen_have_vector_callback && xen_feature(XENFEAT_hvm_safe_pvclock))
		xen_setup_timer(cpu);

	rc = xen_smp_intr_init(cpu);
	if (rc) {
		WARN(1, "xen_smp_intr_init() for CPU %d failed: %d\n",
		     cpu, rc);
		return rc;
	}
	return 0;
}
コード例 #3
0
void xen_setup_vcpu_info_placement(void)
{
	int cpu;

	for_each_possible_cpu(cpu)
		xen_vcpu_setup(cpu);

	if (have_vcpu_info_placement) {
		pv_irq_ops.save_fl = __PV_IS_CALLEE_SAVE(xen_save_fl_direct);
		pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(xen_restore_fl_direct);
		pv_irq_ops.irq_disable = __PV_IS_CALLEE_SAVE(xen_irq_disable_direct);
		pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(xen_irq_enable_direct);
		pv_mmu_ops.read_cr2 = xen_read_cr2_direct;
	}
}
コード例 #4
0
ファイル: enlighten.c プロジェクト: PivotalBigData/PivotalHD
/* This is called once we have the cpu_possible_map */
void xen_setup_vcpu_info_placement(void)
{
	int cpu;

	for_each_possible_cpu(cpu)
		xen_vcpu_setup(cpu);

	/* xen_vcpu_setup managed to place the vcpu_info within the
	   percpu area for all cpus, so make use of it */
	if (have_vcpu_info_placement) {
		pv_irq_ops.save_fl = __PV_IS_CALLEE_SAVE(xen_save_fl_direct);
		pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(xen_restore_fl_direct);
		pv_irq_ops.irq_disable = __PV_IS_CALLEE_SAVE(xen_irq_disable_direct);
		pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(xen_irq_enable_direct);
		pv_mmu_ops.read_cr2 = xen_read_cr2_direct;
	}
}
コード例 #5
0
ファイル: enlighten.c プロジェクト: PivotalBigData/PivotalHD
/*
 * On restore, set the vcpu placement up again.
 * If it fails, then we're in a bad state, since
 * we can't back out from using it...
 */
void xen_vcpu_restore(void)
{
	int cpu;

	for_each_online_cpu(cpu) {
		bool other_cpu = (cpu != smp_processor_id());

		if (other_cpu &&
		    HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
			BUG();

		xen_setup_runstate_info(cpu);

		if (have_vcpu_info_placement)
			xen_vcpu_setup(cpu);

		if (other_cpu &&
		    HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
			BUG();
	}
}