target-s390x: Clean up cpu_inject_*() signatures

Despite cautioning that S390CPU is needed for upcoming CPUState
refactorings, commit 5d69c547d947798cba92d836d06f6e017ba2b19d (s390:
I/O interrupt and machine check injection.) added functions
cpu_inject_io() and cpu_inject_crw_mchk() with CPUS390XState argument,
claiming consistency with cpu_inject_ext().

This complicates making cpu_interrupt() take a CPUState even more and it
required to pass &cpu->env from some S390CPU-aware call sites already,
creating inconsistency elsewhere. Address that.

This also eliminates the need for CPUS390XState in s390_virtio_irq().

Signed-off-by: Andreas Färber <[email protected]>
Acked-by: Cornelia Huck <[email protected]>
Signed-off-by: Alexander Graf <[email protected]>
diff --git a/target-s390x/helper.c b/target-s390x/helper.c
index e62c93e..a5ce56b 100644
--- a/target-s390x/helper.c
+++ b/target-s390x/helper.c
@@ -737,6 +737,8 @@
 
 void do_interrupt(CPUS390XState *env)
 {
+    S390CPU *cpu = s390_env_get_cpu(env);
+
     qemu_log_mask(CPU_LOG_INT, "%s: %d at pc=%" PRIx64 "\n",
                   __func__, env->exception_index, env->psw.addr);
 
@@ -755,12 +757,12 @@
             /* code is already in env */
             env->exception_index = EXCP_EXT;
         } else if (env->pending_int & INTERRUPT_TOD) {
-            cpu_inject_ext(env, 0x1004, 0, 0);
+            cpu_inject_ext(cpu, 0x1004, 0, 0);
             env->exception_index = EXCP_EXT;
             env->pending_int &= ~INTERRUPT_EXT;
             env->pending_int &= ~INTERRUPT_TOD;
         } else if (env->pending_int & INTERRUPT_CPUTIMER) {
-            cpu_inject_ext(env, 0x1005, 0, 0);
+            cpu_inject_ext(cpu, 0x1005, 0, 0);
             env->exception_index = EXCP_EXT;
             env->pending_int &= ~INTERRUPT_EXT;
             env->pending_int &= ~INTERRUPT_TOD;