s390x: Move initial reset

Let's move the intial reset into the reset handler and cleanup
afterwards.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191128083723.11937-1-frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

diff --git a/target/s390x/cpu-qom.h b/target/s390x/cpu-qom.h
index f3b71bac67c91c9e307fa250b47af59498cbc491..6f0a12042ed4802de7da08d636125eafb065b58e 100644 (file)
--- a/target/s390x/cpu-qom.h
+++ b/target/s390x/cpu-qom.h
@@ -36,6 +36,7 @@ typedef struct S390CPUDef S390CPUDef;
 
 typedef enum cpu_reset_type {
     S390_CPU_RESET_NORMAL,
+    S390_CPU_RESET_INITIAL,
 } cpu_reset_type;
 
 /**
@@ -62,7 +63,6 @@ typedef struct S390CPUClass {
     void (*parent_reset)(CPUState *cpu);
     void (*load_normal)(CPUState *cpu);
     void (*reset)(CPUState *cpu, cpu_reset_type type);
-    void (*initial_cpu_reset)(CPUState *cpu);
 } S390CPUClass;
 
 typedef struct S390CPU S390CPU;

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 67d6fbfa4401720aa24f2ace8e3c3303551136ff..ca62fe768569b992bbf41b0647342431e3f1ccc9 100644 (file)
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -94,6 +94,23 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type)
     s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu);
 
     switch (type) {
+    case S390_CPU_RESET_INITIAL:
+        /* initial reset does not clear everything! */
+        memset(&env->start_initial_reset_fields, 0,
+               offsetof(CPUS390XState, end_reset_fields) -
+               offsetof(CPUS390XState, start_initial_reset_fields));
+
+        /* architectured initial value for Breaking-Event-Address register */
+        env->gbea = 1;
+
+        /* architectured initial values for CR 0 and 14 */
+        env->cregs[0] = CR0_RESET;
+        env->cregs[14] = CR14_RESET;
+
+        /* tininess for underflow is detected before rounding */
+        set_float_detect_tininess(float_tininess_before_rounding,
+                                  &env->fpu_status);
+       /* fall through */
     case S390_CPU_RESET_NORMAL:
         env->pfault_token = -1UL;
         env->bpbc = false;
@@ -101,35 +118,9 @@ static void s390_cpu_reset(CPUState *s, cpu_reset_type type)
     default:
         g_assert_not_reached();
     }
-}
-
-/* S390CPUClass::initial_reset() */
-static void s390_cpu_initial_reset(CPUState *s)
-{
-    S390CPU *cpu = S390_CPU(s);
-    CPUS390XState *env = &cpu->env;
-
-    s390_cpu_reset(s, S390_CPU_RESET_NORMAL);
-    /* initial reset does not clear everything! */
-    memset(&env->start_initial_reset_fields, 0,
-        offsetof(CPUS390XState, end_reset_fields) -
-        offsetof(CPUS390XState, start_initial_reset_fields));
-
-    /* architectured initial values for CR 0 and 14 */
-    env->cregs[0] = CR0_RESET;
-    env->cregs[14] = CR14_RESET;
-
-    /* architectured initial value for Breaking-Event-Address register */
-    env->gbea = 1;
-
-    env->pfault_token = -1UL;
-
-    /* tininess for underflow is detected before rounding */
-    set_float_detect_tininess(float_tininess_before_rounding,
-                              &env->fpu_status);
 
     /* Reset state inside the kernel that we cannot access yet from QEMU. */
-    if (kvm_enabled()) {
+    if (kvm_enabled() && type != S390_CPU_RESET_NORMAL) {
         kvm_s390_reset_vcpu(cpu);
     }
 }
@@ -481,7 +472,6 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     scc->load_normal = s390_cpu_load_normal;
 #endif
     scc->reset = s390_cpu_reset;
-    scc->initial_cpu_reset = s390_cpu_initial_reset;
     cc->reset = s390_cpu_full_reset;
     cc->class_by_name = s390_cpu_class_by_name,
     cc->has_work = s390_cpu_has_work;

diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index 18123dfd5bd13f530fcc3f8c54c43482da3ba006..d2af13b345ccd9094f82385cd5286e1a7392e60a 100644 (file)
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -748,7 +748,7 @@ static inline void s390_do_cpu_initial_reset(CPUState *cs, run_on_cpu_data arg)
 {
     S390CPUClass *scc = S390_CPU_GET_CLASS(cs);
 
-    scc->initial_cpu_reset(cs);
+    scc->reset(cs, S390_CPU_RESET_INITIAL);
 }
 
 static inline void s390_do_cpu_load_normal(CPUState *cs, run_on_cpu_data arg)

diff --git a/target/s390x/sigp.c b/target/s390x/sigp.c
index 850139b9cd544c4bb34497fec554311462467d75..727875bb4ab9b6c6f606e4ba8afbf6a2d2834d9f 100644 (file)
--- a/target/s390x/sigp.c
+++ b/target/s390x/sigp.c
@@ -254,7 +254,7 @@ static void sigp_initial_cpu_reset(CPUState *cs, run_on_cpu_data arg)
     SigpInfo *si = arg.host_ptr;
 
     cpu_synchronize_state(cs);
-    scc->initial_cpu_reset(cs);
+    scc->reset(cs, S390_CPU_RESET_INITIAL);
     cpu_synchronize_post_reset(cs);
     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
 }