xen/arm: Enable cpu_hotplug.c
Build cpu_hotplug for ARM and ARM64 guests.
Rename arch_(un)register_cpu to xen_(un)register_cpu and provide an
empty implementation on ARM and ARM64. On x86 just call
arch_(un)register_cpu as we are already doing.
Initialize cpu_hotplug on ARM.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c
index cc6513a..43de1f5 100644
--- a/drivers/xen/cpu_hotplug.c
+++ b/drivers/xen/cpu_hotplug.c
@@ -11,7 +11,7 @@
static void enable_hotplug_cpu(int cpu)
{
if (!cpu_present(cpu))
- arch_register_cpu(cpu);
+ xen_arch_register_cpu(cpu);
set_cpu_present(cpu, true);
}
@@ -19,7 +19,7 @@
static void disable_hotplug_cpu(int cpu)
{
if (cpu_present(cpu))
- arch_unregister_cpu(cpu);
+ xen_arch_unregister_cpu(cpu);
set_cpu_present(cpu, false);
}
@@ -102,7 +102,11 @@
static struct notifier_block xsn_cpu = {
.notifier_call = setup_cpu_watcher };
+#ifdef CONFIG_X86
if (!xen_pv_domain())
+#else
+ if (!xen_domain())
+#endif
return -ENODEV;
register_xenstore_notifier(&xsn_cpu);