[PATCH 3/6] target/s390x: Use env_archcpu() in handle_diag_308()

[Philippe Mathieu-Daudé]

When CPUArchState* is available (here CPUS390XState*), we
can use the fast env_archcpu() macro to get ArchCPU* (here
S390CPU*). The QOM cast S390_CPU() macro will be slower when
building with --enable-qom-cast-debug.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/s390x/diag.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/s390x/diag.c b/target/s390x/diag.c
index 8ce18e08f3..27ffd48576 100644
--- a/target/s390x/diag.c
+++ b/target/s390x/diag.c
@@ -77,7 +77,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, 
uint64_t r3, uintptr_t ra)
 {
     bool valid;
     CPUState *cs = env_cpu(env);
-    S390CPU *cpu = S390_CPU(cs);
+    S390CPU *cpu = env_archcpu(env);
     uint64_t addr =  env->regs[r1];
     uint64_t subcode = env->regs[r3];
     IplParameterBlock *iplb;
-- 
2.41.0