x86/xen: split off smp_hvm.c
Move PVHVM related code to smp_hvm.c. Drop 'static' qualifier from
xen_smp_send_reschedule(), xen_smp_send_call_function_ipi(),
xen_smp_send_call_function_single_ipi(), these functions will be moved to
common smp code when smp_pv.c is split.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
diff --git a/arch/x86/xen/smp_hvm.c b/arch/x86/xen/smp_hvm.c
new file mode 100644
index 0000000..8bed434
--- /dev/null
+++ b/arch/x86/xen/smp_hvm.c
@@ -0,0 +1,58 @@
+#include <asm/smp.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.
+ */
+ 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)
+{
+ native_smp_prepare_cpus(max_cpus);
+ WARN_ON(xen_smp_intr_init(0));
+
+ xen_init_lock_cpu(0);
+}
+
+#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)
+{
+ 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;
+}