hyperv: allow passing arbitrary data to sint ack callback

Make sint ack callback accept an opaque pointer, that is stored on
sint_route at creation time.

This allows for more convenient interaction with the callback.

Besides, nothing outside hyperv.c should need to know the layout of
HvSintRoute fields any more so its declaration can be removed from the
header.
Signed-off-by: NRoman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921081836.29230-6-rkagan@virtuozzo.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/misc/hyperv_testdev.c

@@ -52,7 +52,7 @@ static void sint_route_create(HypervTestDev *dev,
     sint_route->vp_index = vp_index;
     sint_route->sint = sint;
 
-    sint_route->sint_route = kvm_hv_sint_route_create(vp_index, sint, NULL);
+    sint_route->sint_route = kvm_hv_sint_route_create(vp_index, sint, NULL, NULL);
     assert(sint_route->sint_route);
 
     QLIST_INSERT_HEAD(&dev->sint_routes, sint_route, le);

target/i386/hyperv.c

@@ -16,6 +16,16 @@
 #include "hyperv.h"
 #include "hyperv-proto.h"
 
+struct HvSintRoute {
+    uint32_t sint;
+    uint32_t vp_index;
+    int gsi;
+    EventNotifier sint_set_notifier;
+    EventNotifier sint_ack_notifier;
+    HvSintAckClb sint_ack_clb;
+    void *sint_ack_clb_data;
+};
+
 uint32_t hyperv_vp_index(X86CPU *cpu)
 {
     return CPU(cpu)->cpu_index;
@@ -77,11 +87,12 @@ static void kvm_hv_sint_ack_handler(EventNotifier *notifier)
     HvSintRoute *sint_route = container_of(notifier, HvSintRoute,
                                            sint_ack_notifier);
     event_notifier_test_and_clear(notifier);
-    sint_route->sint_ack_clb(sint_route);
+    sint_route->sint_ack_clb(sint_route->sint_ack_clb_data);
 }
 
 HvSintRoute *kvm_hv_sint_route_create(uint32_t vp_index, uint32_t sint,
-                                      HvSintAckClb sint_ack_clb)
+                                      HvSintAckClb sint_ack_clb,
+                                      void *sint_ack_clb_data)
 {
     HvSintRoute *sint_route;
     EventNotifier *ack_notifier;
@@ -116,6 +127,7 @@ HvSintRoute *kvm_hv_sint_route_create(uint32_t vp_index, uint32_t sint,
     }
     sint_route->gsi = gsi;
     sint_route->sint_ack_clb = sint_ack_clb;
+    sint_route->sint_ack_clb_data = sint_ack_clb_data;
     sint_route->vp_index = vp_index;
     sint_route->sint = sint;
 

target/i386/hyperv.h

@@ -16,24 +16,15 @@
 
 #include "cpu.h"
 #include "sysemu/kvm.h"
-#include "qemu/event_notifier.h"
 
 typedef struct HvSintRoute HvSintRoute;
-typedef void (*HvSintAckClb)(HvSintRoute *sint_route);
-
-struct HvSintRoute {
-    uint32_t sint;
-    uint32_t vp_index;
-    int gsi;
-    EventNotifier sint_set_notifier;
-    EventNotifier sint_ack_notifier;
-    HvSintAckClb sint_ack_clb;
-};
+typedef void (*HvSintAckClb)(void *data);
 
 int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit);
 
 HvSintRoute *kvm_hv_sint_route_create(uint32_t vp_index, uint32_t sint,
-                                      HvSintAckClb sint_ack_clb);
+                                      HvSintAckClb sint_ack_clb,
+                                      void *sint_ack_clb_data);
 
 void kvm_hv_sint_route_destroy(HvSintRoute *sint_route);