[Xen-devel] [patch 30/33] xen: Xen machine operations

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Make the appropriate hypercalls to halt and reboot the virtual machine.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Acked-by: Chris Wright <chrisw@xxxxxxxxxxxx>

---
 arch/i386/xen/enlighten.c |   43 +++++++++++++++++++++++++++++++++++++++++++
 arch/i386/xen/smp.c       |    4 +---
 2 files changed, 44 insertions(+), 3 deletions(-)

===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -14,6 +14,7 @@
 
 #include <xen/interface/xen.h>
 #include <xen/interface/vcpu.h>
+#include <xen/interface/sched.h>
 #include <xen/features.h>
 #include <xen/page.h>
 
@@ -28,6 +29,7 @@
 #include <asm/pgtable.h>
 #include <asm/smp.h>
 #include <asm/tlbflush.h>
+#include <asm/reboot.h>
 
 #include "xen-ops.h"
 #include "mmu.h"
@@ -787,6 +789,45 @@ static const struct smp_ops xen_smp_ops 
 };
 #endif /* CONFIG_SMP */
 
+static void xen_reboot(int reason)
+{
+#ifdef CONFIG_SMP
+       smp_send_stop();
+#endif
+
+       if (HYPERVISOR_sched_op(SCHEDOP_shutdown, reason))
+               BUG();
+}
+
+static void xen_restart(char *msg)
+{
+       xen_reboot(SHUTDOWN_reboot);
+}
+
+static void xen_emergency_restart(void)
+{
+       xen_reboot(SHUTDOWN_reboot);
+}
+
+static void xen_machine_halt(void)
+{
+       xen_reboot(SHUTDOWN_poweroff);
+}
+
+static void xen_crash_shutdown(struct pt_regs *regs)
+{
+       xen_reboot(SHUTDOWN_crash);
+}
+
+static const struct machine_ops __initdata xen_machine_ops = {
+       .restart = xen_restart,
+       .halt = xen_machine_halt,
+       .power_off = xen_machine_halt,
+       .shutdown = xen_machine_halt,
+       .crash_shutdown = xen_crash_shutdown,
+       .emergency_restart = xen_emergency_restart,
+};
+
 /* First C function to be called on Xen boot */
 static asmlinkage void __init xen_start_kernel(void)
 {
@@ -800,6 +841,8 @@ static asmlinkage void __init xen_start_
 
        /* Install Xen paravirt ops */
        paravirt_ops = xen_paravirt_ops;
+       machine_ops = xen_machine_ops;
+
 #ifdef CONFIG_SMP
        smp_ops = xen_smp_ops;
 #endif
===================================================================
--- a/arch/i386/xen/smp.c
+++ b/arch/i386/xen/smp.c
@@ -303,9 +303,7 @@ static void stop_self(void *v)
 
 void xen_smp_send_stop(void)
 {
-       cpumask_t mask = cpu_online_map;
-       cpu_clear(smp_processor_id(), mask);
-       xen_smp_call_function_mask(mask, stop_self, NULL, 0);
+       smp_call_function(stop_self, NULL, 0, 0);
 }
 
 void xen_smp_send_reschedule(int cpu)

-- 


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