[3/3,V3] kvm: extend kvm_irqchip_add_msi_route to work on s390

diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 104cf35..30cb84d 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -158,6 +158,7 @@  extern bool kvm_readonly_mem_allowed;
 
 struct kvm_run;
 struct kvm_lapic_state;
+struct kvm_irq_routing_entry;
 
 typedef struct KVMCapabilityInfo {
     const char *name;
@@ -270,6 +271,9 @@  int kvm_arch_on_sigbus(int code, void *addr);
 
 void kvm_arch_init_irq_routing(KVMState *s);
 
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data);
+
 int kvm_set_irq(KVMState *s, int irq, int level);
 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
 
diff --git a/kvm-all.c b/kvm-all.c
index 18cc6b4..2f21a4e 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1225,6 +1225,10 @@  int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
     kroute.u.msi.address_lo = (uint32_t)msg.address;
     kroute.u.msi.address_hi = msg.address >> 32;
     kroute.u.msi.data = le32_to_cpu(msg.data);
+    if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data)) {
+        kvm_irqchip_release_virq(s, virq);
+        return -EINVAL;
+    }
 
     kvm_add_routing_entry(s, &kroute);
     kvm_irqchip_commit_routes(s);
@@ -1250,6 +1254,9 @@  int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg)
     kroute.u.msi.address_lo = (uint32_t)msg.address;
     kroute.u.msi.address_hi = msg.address >> 32;
     kroute.u.msi.data = le32_to_cpu(msg.data);
+    if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data)) {
+        return -EINVAL;
+    }
 
     return kvm_update_routing_entry(s, &kroute);
 }
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index 4d81f3d..23cefe9 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -548,3 +548,9 @@  int kvm_arch_irqchip_create(KVMState *s)
 
     return 0;
 }
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data)
+{
+    return 0;
+}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f92edfe..54ccb89 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -2733,3 +2733,9 @@  int kvm_device_msix_deassign(KVMState *s, uint32_t dev_id)
     return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSIX |
                                                 KVM_DEV_IRQ_HOST_MSIX);
 }
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data)
+{
+    return 0;
+}
diff --git a/target-mips/kvm.c b/target-mips/kvm.c
index a761ea5..b68191c 100644
--- a/target-mips/kvm.c
+++ b/target-mips/kvm.c
@@ -688,3 +688,9 @@  int kvm_arch_get_registers(CPUState *cs)
 
     return ret;
 }
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data)
+{
+    return 0;
+}
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 6843fa0..04c83cd 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -2388,3 +2388,9 @@  out_close:
 error_out:
     return;
 }
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                             uint64_t address, uint32_t data)
+{
+    return 0;
+}
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index a6849ab..89cc218 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -41,6 +41,7 @@ 
 #include "trace.h"
 #include "qapi-event.h"
 #include "hw/s390x/s390-pci-inst.h"
+#include "hw/s390x/s390-pci-bus.h"
 
 /* #define DEBUG_KVM */
 
@@ -1514,3 +1515,28 @@  int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
 
     return ret;
 }
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+                              uint64_t address, uint32_t data)
+{
+    S390PCIBusDevice *pbdev;
+    uint32_t fid = data >> ZPCI_MSI_VEC_BITS;
+    uint32_t vec = data & ZPCI_MSI_VEC_MASK;
+
+    pbdev = s390_pci_find_dev_by_fid(fid);
+    if (!pbdev) {
+        DPRINTF("add_msi_route no dev\n");
+        return -ENODEV;
+    }
+
+    pbdev->routes.adapter.ind_offset = vec;
+
+    route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
+    route->flags = 0;
+    route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
+    route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
+    route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
+    route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
+    route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
+    return 0;
+}