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Diffstat (limited to 'virt/kvm/kvm_main.c')
-rw-r--r--virt/kvm/kvm_main.c30
1 files changed, 24 insertions, 6 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 6c0bd9a8e27e..3d0678579c5e 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -102,9 +102,6 @@ EXPORT_SYMBOL_GPL(halt_poll_ns_shrink);
DEFINE_MUTEX(kvm_lock);
LIST_HEAD(vm_list);
-static DEFINE_PER_CPU(bool, hardware_enabled);
-static int kvm_usage_count;
-
static struct kmem_cache *kvm_vcpu_cache;
static __read_mostly struct preempt_ops kvm_preempt_ops;
@@ -146,9 +143,6 @@ static void hardware_disable_all(void);
static void kvm_io_bus_destroy(struct kvm_io_bus *bus);
-__visible bool kvm_rebooting;
-EXPORT_SYMBOL_GPL(kvm_rebooting);
-
#define KVM_EVENT_CREATE_VM 0
#define KVM_EVENT_DESTROY_VM 1
static void kvm_uevent_notify_change(unsigned int type, struct kvm *kvm);
@@ -5093,6 +5087,13 @@ static struct miscdevice kvm_dev = {
&kvm_chardev_ops,
};
+#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING
+__visible bool kvm_rebooting;
+EXPORT_SYMBOL_GPL(kvm_rebooting);
+
+static DEFINE_PER_CPU(bool, hardware_enabled);
+static int kvm_usage_count;
+
static int __hardware_enable_nolock(void)
{
if (__this_cpu_read(hardware_enabled))
@@ -5254,6 +5255,17 @@ static struct syscore_ops kvm_syscore_ops = {
.suspend = kvm_suspend,
.resume = kvm_resume,
};
+#else /* CONFIG_KVM_GENERIC_HARDWARE_ENABLING */
+static int hardware_enable_all(void)
+{
+ return 0;
+}
+
+static void hardware_disable_all(void)
+{
+
+}
+#endif /* CONFIG_KVM_GENERIC_HARDWARE_ENABLING */
static void kvm_io_bus_destroy(struct kvm_io_bus *bus)
{
@@ -5942,6 +5954,7 @@ int kvm_init(unsigned vcpu_size, unsigned vcpu_align, struct module *module)
int r;
int cpu;
+#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING
r = cpuhp_setup_state_nocalls(CPUHP_AP_KVM_ONLINE, "kvm/cpu:online",
kvm_online_cpu, kvm_offline_cpu);
if (r)
@@ -5949,6 +5962,7 @@ int kvm_init(unsigned vcpu_size, unsigned vcpu_align, struct module *module)
register_reboot_notifier(&kvm_reboot_notifier);
register_syscore_ops(&kvm_syscore_ops);
+#endif
/* A kmem cache lets us meet the alignment requirements of fx_save. */
if (!vcpu_align)
@@ -6016,9 +6030,11 @@ out_free_4:
free_cpumask_var(per_cpu(cpu_kick_mask, cpu));
kmem_cache_destroy(kvm_vcpu_cache);
out_free_3:
+#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING
unregister_syscore_ops(&kvm_syscore_ops);
unregister_reboot_notifier(&kvm_reboot_notifier);
cpuhp_remove_state_nocalls(CPUHP_AP_KVM_ONLINE);
+#endif
return r;
}
EXPORT_SYMBOL_GPL(kvm_init);
@@ -6040,9 +6056,11 @@ void kvm_exit(void)
kmem_cache_destroy(kvm_vcpu_cache);
kvm_vfio_ops_exit();
kvm_async_pf_deinit();
+#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING
unregister_syscore_ops(&kvm_syscore_ops);
unregister_reboot_notifier(&kvm_reboot_notifier);
cpuhp_remove_state_nocalls(CPUHP_AP_KVM_ONLINE);
+#endif
kvm_irqfd_exit();
}
EXPORT_SYMBOL_GPL(kvm_exit);