[Qemu-devel] [Patch/RFC 06/16] s390x/kvm: Add missing SIGP CPU RESET order

[Christian Borntraeger <borntraeger@de.ibm.com>]

From: Thomas Huth <thuth@linux.vnet.ibm.com>

The SIGP order CPU RESET was still missing in the list of our
supported handler. This patch now adds a simple implementation,
by using the cpu_reset() function that is already available in
target-s390x/cpu.c.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 target-s390x/kvm.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 1f89a89..3bcaaa3 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -633,6 +633,15 @@ static void sigp_initial_cpu_reset(void *arg)
     scc->initial_cpu_reset(cpu);
 }
 
+static void sigp_cpu_reset(void *arg)
+{
+    CPUState *cpu = arg;
+    S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
+
+    cpu_synchronize_state(cpu);
+    scc->cpu_reset(cpu);
+}
+
 #define SIGP_ORDER_MASK 0x000000ff
 
 static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
@@ -672,6 +681,10 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
         run_on_cpu(CPU(target_cpu), sigp_initial_cpu_reset, CPU(target_cpu));
         cc = 0;
         break;
+    case SIGP_CPU_RESET:
+        run_on_cpu(CPU(target_cpu), sigp_cpu_reset, CPU(target_cpu));
+        cc = 0;
+        break;
     default:
         DPRINTF("KVM: unknown SIGP: 0x%x\n", order_code);
         *statusreg &= 0xffffffff00000000UL;
-- 
1.8.4.2