[PULL 28/87] kvm: introduce kvm_kernel_irqchip_* functions

[Paolo Bonzini <pbonzini@redhat.com>]

The KVMState struct is opaque, so provide accessors for the fields
that will be moved from current_machine to the accelerator.  For now
they just forward to the machine object, but this will change.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 accel/kvm/kvm-all.c  | 23 +++++++++++++++++++----
 hw/ppc/e500.c        |  5 ++---
 hw/ppc/spapr_irq.c   | 16 ++++------------
 include/sysemu/kvm.h |  7 +++++--
 target/arm/kvm.c     |  8 ++++----
 target/i386/kvm.c    |  4 ++--
 target/mips/kvm.c    |  2 +-
 target/ppc/kvm.c     |  2 +-
 target/s390x/kvm.c   |  2 +-
 9 files changed, 39 insertions(+), 30 deletions(-)

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 4770dd8..34e8f26 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1774,7 +1774,7 @@ void kvm_irqchip_set_qemuirq_gsi(KVMState *s, qemu_irq irq, int gsi)
     g_hash_table_insert(s->gsimap, irq, GINT_TO_POINTER(gsi));
 }
 
-static void kvm_irqchip_create(MachineState *machine, KVMState *s)
+static void kvm_irqchip_create(KVMState *s)
 {
     int ret;
 
@@ -1792,9 +1792,9 @@ static void kvm_irqchip_create(MachineState *machine, KVMState *s)
 
     /* First probe and see if there's a arch-specific hook to create the
      * in-kernel irqchip for us */
-    ret = kvm_arch_irqchip_create(machine, s);
+    ret = kvm_arch_irqchip_create(s);
     if (ret == 0) {
-        if (machine_kernel_irqchip_split(machine)) {
+        if (kvm_kernel_irqchip_split()) {
             perror("Split IRQ chip mode not supported.");
             exit(1);
         } else {
@@ -2066,7 +2066,7 @@ static int kvm_init(MachineState *ms)
     }
 
     if (machine_kernel_irqchip_allowed(ms)) {
-        kvm_irqchip_create(ms, s);
+        kvm_irqchip_create(s);
     }
 
     if (kvm_eventfds_allowed) {
@@ -2983,6 +2983,21 @@ static void kvm_set_kvm_shadow_mem(Object *obj, Visitor *v,
     s->kvm_shadow_mem = value;
 }
 
+bool kvm_kernel_irqchip_allowed(void)
+{
+    return machine_kernel_irqchip_allowed(current_machine);
+}
+
+bool kvm_kernel_irqchip_required(void)
+{
+    return machine_kernel_irqchip_required(current_machine);
+}
+
+bool kvm_kernel_irqchip_split(void)
+{
+    return machine_kernel_irqchip_split(current_machine);
+}
+
 static void kvm_accel_instance_init(Object *obj)
 {
     KVMState *s = KVM_STATE(obj);
diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 91cd4c2..12b6a5b 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -793,7 +793,6 @@ static DeviceState *ppce500_init_mpic(PPCE500MachineState *pms,
                                       MemoryRegion *ccsr,
                                       IrqLines *irqs)
 {
-    MachineState *machine = MACHINE(pms);
     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(pms);
     DeviceState *dev = NULL;
     SysBusDevice *s;
@@ -801,10 +800,10 @@ static DeviceState *ppce500_init_mpic(PPCE500MachineState *pms,
     if (kvm_enabled()) {
         Error *err = NULL;
 
-        if (machine_kernel_irqchip_allowed(machine)) {
+        if (kvm_kernel_irqchip_allowed()) {
             dev = ppce500_init_mpic_kvm(pmc, irqs, &err);
         }
-        if (machine_kernel_irqchip_required(machine) && !dev) {
+        if (kvm_kernel_irqchip_required() && !dev) {
             error_reportf_err(err,
                               "kernel_irqchip requested but unavailable: ");
             exit(1);
diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
index 07e08d6..373505d 100644
--- a/hw/ppc/spapr_irq.c
+++ b/hw/ppc/spapr_irq.c
@@ -75,12 +75,11 @@ int spapr_irq_init_kvm(SpaprInterruptControllerInitKvm fn,
                        uint32_t nr_servers,
                        Error **errp)
 {
-    MachineState *machine = MACHINE(qdev_get_machine());
     Error *local_err = NULL;
 
-    if (kvm_enabled() && machine_kernel_irqchip_allowed(machine)) {
+    if (kvm_enabled() && kvm_kernel_irqchip_allowed()) {
         if (fn(intc, nr_servers, &local_err) < 0) {
-            if (machine_kernel_irqchip_required(machine)) {
+            if (kvm_kernel_irqchip_required()) {
                 error_prepend(&local_err,
                               "kernel_irqchip requested but unavailable: ");
                 error_propagate(errp, local_err);
@@ -185,7 +184,7 @@ static int spapr_irq_check(SpaprMachineState *spapr, Error **errp)
      */
     if (kvm_enabled() &&
         spapr->irq == &spapr_irq_dual &&
-        machine_kernel_irqchip_required(machine) &&
+        kvm_kernel_irqchip_required() &&
         xics_kvm_has_broken_disconnect(spapr)) {
         error_setg(errp, "KVM is too old to support ic-mode=dual,kernel-irqchip=on");
         return -1;
@@ -288,20 +287,13 @@ uint32_t spapr_irq_nr_msis(SpaprMachineState *spapr)
 
 void spapr_irq_init(SpaprMachineState *spapr, Error **errp)
 {
-    MachineState *machine = MACHINE(spapr);
     SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
 
-    if (machine_kernel_irqchip_split(machine)) {
+    if (kvm_enabled() && kvm_kernel_irqchip_split()) {
         error_setg(errp, "kernel_irqchip split mode not supported on pseries");
         return;
     }
 
-    if (!kvm_enabled() && machine_kernel_irqchip_required(machine)) {
-        error_setg(errp,
-                   "kernel_irqchip requested but only available with KVM");
-        return;
-    }
-
     if (spapr_irq_check(spapr, errp) < 0) {
         return;
     }
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 9fe233b..aaf2a50 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -519,10 +519,13 @@ void kvm_pc_gsi_handler(void *opaque, int n, int level);
 void kvm_pc_setup_irq_routing(bool pci_enabled);
 void kvm_init_irq_routing(KVMState *s);
 
+bool kvm_kernel_irqchip_allowed(void);
+bool kvm_kernel_irqchip_required(void);
+bool kvm_kernel_irqchip_split(void);
+
 /**
  * kvm_arch_irqchip_create:
  * @KVMState: The KVMState pointer
- * @MachineState: The MachineState pointer
  *
  * Allow architectures to create an in-kernel irq chip themselves.
  *
@@ -530,7 +533,7 @@ void kvm_init_irq_routing(KVMState *s);
  *            0: irq chip was not created
  *          > 0: irq chip was created
  */
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s);
+int kvm_arch_irqchip_create(KVMState *s);
 
 /**
  * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 5b82cef..b87b59a 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -741,11 +741,11 @@ void kvm_arch_init_irq_routing(KVMState *s)
 {
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
-     if (machine_kernel_irqchip_split(ms)) {
-         perror("-machine kernel_irqchip=split is not supported on ARM.");
-         exit(1);
+    if (kvm_kernel_irqchip_split()) {
+        perror("-machine kernel_irqchip=split is not supported on ARM.");
+        exit(1);
     }
 
     /* If we can create the VGIC using the newer device control API, we
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 62ce681..ef63f3a 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -4494,10 +4494,10 @@ void kvm_arch_init_irq_routing(KVMState *s)
     }
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
     int ret;
-    if (machine_kernel_irqchip_split(ms)) {
+    if (kvm_kernel_irqchip_split()) {
         ret = kvm_vm_enable_cap(s, KVM_CAP_SPLIT_IRQCHIP, 0, 24);
         if (ret) {
             error_report("Could not enable split irqchip mode: %s",
diff --git a/target/mips/kvm.c b/target/mips/kvm.c
index 578bc14..de3e26e 100644
--- a/target/mips/kvm.c
+++ b/target/mips/kvm.c
@@ -57,7 +57,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     return 0;
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
     return 0;
 }
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 7406d18..f7e187c 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -152,7 +152,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     return 0;
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
     return 0;
 }
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index ad6e38c..15260ae 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -374,7 +374,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     return 0;
 }
 
-int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s)
 {
     return 0;
 }
-- 
1.8.3.1