static int __init xen_pvh_gnttab_setup(void) { if (!xen_pvh_domain()) return -ENODEV; return xlated_setup_gnttab_pages(); }
static void __init xen_hvm_guest_init(void) { if (xen_pv_domain()) return; init_hvm_pv_info(); xen_hvm_init_shared_info(); xen_panic_handler_init(); if (xen_feature(XENFEAT_hvm_callback_vector)) xen_have_vector_callback = 1; xen_hvm_smp_init(); WARN_ON(xen_cpuhp_setup(xen_cpu_up_prepare_hvm, xen_cpu_dead_hvm)); xen_unplug_emulated_devices(); x86_init.irqs.intr_init = xen_init_IRQ; xen_hvm_init_time_ops(); xen_hvm_init_mmu_ops(); if (xen_pvh_domain()) machine_ops.emergency_restart = xen_emergency_restart; #ifdef CONFIG_KEXEC_CORE machine_ops.shutdown = xen_hvm_shutdown; machine_ops.crash_shutdown = xen_hvm_crash_shutdown; #endif }
static void __init init_hvm_pv_info(void) { int major, minor; uint32_t eax, ebx, ecx, edx, base; base = xen_cpuid_base(); eax = cpuid_eax(base + 1); major = eax >> 16; minor = eax & 0xffff; printk(KERN_INFO "Xen version %d.%d.\n", major, minor); xen_domain_type = XEN_HVM_DOMAIN; /* PVH set up hypercall page in xen_prepare_pvh(). */ if (xen_pvh_domain()) pv_info.name = "Xen PVH"; else { u64 pfn; uint32_t msr; pv_info.name = "Xen HVM"; msr = cpuid_ebx(base + 2); pfn = __pa(hypercall_page); wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); } xen_setup_features(); cpuid(base + 4, &eax, &ebx, &ecx, &edx); if (eax & XEN_HVM_CPUID_VCPU_ID_PRESENT) this_cpu_write(xen_vcpu_id, ebx); else this_cpu_write(xen_vcpu_id, smp_processor_id()); }
static int __init xen_pvh_gnttab_setup(void) { if (!xen_pvh_domain()) return -ENODEV; xen_auto_xlat_grant_frames.count = gnttab_max_grant_frames(); return xen_xlate_map_ballooned_pages(&xen_auto_xlat_grant_frames.pfn, &xen_auto_xlat_grant_frames.vaddr, xen_auto_xlat_grant_frames.count); }
static int setup_cpu_watcher(struct notifier_block *notifier, unsigned long event, void *data) { int cpu; static struct xenbus_watch cpu_watch = { .node = "cpu", .callback = handle_vcpu_hotplug_event}; (void)register_xenbus_watch(&cpu_watch); for_each_possible_cpu(cpu) { if (vcpu_online(cpu) == 0) { (void)cpu_down(cpu); set_cpu_present(cpu, false); } } return NOTIFY_DONE; } static int __init setup_vcpu_hotplug_event(void) { static struct notifier_block xsn_cpu = { .notifier_call = setup_cpu_watcher }; #ifdef CONFIG_X86 if (!xen_pv_domain() && !xen_pvh_domain()) #else if (!xen_domain()) #endif return -ENODEV; register_xenstore_notifier(&xsn_cpu); return 0; } arch_initcall(setup_vcpu_hotplug_event);