[05/12] s390x: implement SIGP restart and shutdown

Submitted by Alexander Graf on Nov. 14, 2011, 5:06 p.m.

Details

Message ID 1321290400-32717-6-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf Nov. 14, 2011, 5:06 p.m.
An s390x OS does reboot and shutdown triggers through hypercalls that
we didn't implement on the TCG backend yet. That means that so far we
couldn't shut down virtual machines for example, having them hang on
shutdown when not using KVM.

With this patch, this restriction is gone. We can now shut down and
reboot s390x virtual machines even when using the TCG backend.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 target-s390x/op_helper.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

Patch hide | download patch | download mbox

diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c
index 364b100..137bae7 100644
--- a/target-s390x/op_helper.c
+++ b/target-s390x/op_helper.c
@@ -29,6 +29,10 @@ 
 #include <linux/kvm.h>
 #endif
 
+#if !defined (CONFIG_USER_ONLY)
+#include "sysemu.h"
+#endif
+
 /*****************************************************************************/
 /* Softmmu support */
 #if !defined (CONFIG_USER_ONLY)
@@ -2901,6 +2905,16 @@  uint32_t HELPER(sigp)(uint64_t order_code, uint32_t r1, uint64_t cpu_addr)
         env->regs[r1] &= 0xffffffff00000000ULL;
         cc = 1;
         break;
+#if !defined (CONFIG_USER_ONLY)
+    case SIGP_RESTART:
+        qemu_system_reset_request();
+        cpu_loop_exit(env);
+        break;
+    case SIGP_STOP:
+        qemu_system_shutdown_request();
+        cpu_loop_exit(env);
+        break;
+#endif
     default:
         /* unknown sigp */
         fprintf(stderr, "XXX unknown sigp: 0x%" PRIx64 "\n", order_code);