s390x/tcg: cleanup service interrupt injection

There are still some leftovers from old virtio interrupts in there.
Most importantly, we don't have to queue service interrupts anymore.
Just like KVM, we can simply multiplex the SCLP service interrupts and
avoid the queue.

Also, now only valid parameters/cpu_addr will be stored on service
interrupts.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170928203708.9376-3-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

1 files changed, 1 insertions, 9 deletions

diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index e32f87a2f1..7bea97a2d7 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -53,7 +53,6 @@
 
 #define MMU_USER_IDX 0
 
-#define MAX_EXT_QUEUE 16
 #define MAX_IO_QUEUE 16
 #define MAX_MCHK_QUEUE 16
 
@@ -67,12 +66,6 @@ typedef struct PSW {
     uint64_t addr;
 } PSW;
 
-typedef struct ExtQueue {
-    uint32_t code;
-    uint32_t param;
-    uint32_t param64;
-} ExtQueue;
-
 typedef struct IOIntQueue {
     uint16_t id;
     uint16_t nr;
@@ -128,12 +121,11 @@ struct CPUS390XState {
 
     uint64_t cregs[16]; /* control registers */
 
-    ExtQueue ext_queue[MAX_EXT_QUEUE];
     IOIntQueue io_queue[MAX_IO_QUEUE][8];
     MchkQueue mchk_queue[MAX_MCHK_QUEUE];
 
     int pending_int;
-    int ext_index;
+    uint32_t service_param;
     int io_index[8];
     int mchk_index;