[PULL 27/39] hw/i386/pc: Extract pc_gsi_create()

[Paolo Bonzini <pbonzini@redhat.com>]

From: Philippe Mathieu-Daudé <philmd@redhat.com>

The GSI creation code is common to all PC machines, extract the
common code.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018135910.24286-2-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/i386/pc.c         | 15 +++++++++++++++
 hw/i386/pc_piix.c    |  9 +--------
 hw/i386/pc_q35.c     |  9 +--------
 include/hw/i386/pc.h |  2 ++
 4 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a8888dd..e8a54ac 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -355,6 +355,21 @@ void gsi_handler(void *opaque, int n, int level)
     qemu_set_irq(s->ioapic_irq[n], level);
 }
 
+GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled)
+{
+    GSIState *s;
+
+    s = g_new0(GSIState, 1);
+    if (kvm_ioapic_in_kernel()) {
+        kvm_pc_setup_irq_routing(pci_enabled);
+        *irqs = qemu_allocate_irqs(kvm_pc_gsi_handler, s, GSI_NUM_PINS);
+    } else {
+        *irqs = qemu_allocate_irqs(gsi_handler, s, GSI_NUM_PINS);
+    }
+
+    return s;
+}
+
 static void ioport80_write(void *opaque, hwaddr addr, uint64_t data,
                            unsigned size)
 {
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index a86317c..0cc951a 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -189,14 +189,7 @@ static void pc_init1(MachineState *machine,
         xen_load_linux(pcms);
     }
 
-    gsi_state = g_malloc0(sizeof(*gsi_state));
-    if (kvm_ioapic_in_kernel()) {
-        kvm_pc_setup_irq_routing(pcmc->pci_enabled);
-        x86ms->gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
-                                       GSI_NUM_PINS);
-    } else {
-        x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
-    }
+    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
 
     if (pcmc->pci_enabled) {
         pci_bus = i440fx_init(host_type,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 75c8caf..255c803 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -212,14 +212,7 @@ static void pc_q35_init(MachineState *machine)
     }
 
     /* irq lines */
-    gsi_state = g_malloc0(sizeof(*gsi_state));
-    if (kvm_ioapic_in_kernel()) {
-        kvm_pc_setup_irq_routing(pcmc->pci_enabled);
-        x86ms->gsi = qemu_allocate_irqs(kvm_pc_gsi_handler, gsi_state,
-                                       GSI_NUM_PINS);
-    } else {
-        x86ms->gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS);
-    }
+    gsi_state = pc_gsi_create(&x86ms->gsi, pcmc->pci_enabled);
 
     /* create pci host bus */
     q35_host = Q35_HOST_DEVICE(qdev_create(NULL, TYPE_Q35_HOST_DEVICE));
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 13c4eac..8c5dc39 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -157,6 +157,8 @@ typedef struct GSIState {
 
 void gsi_handler(void *opaque, int n, int level);
 
+GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled);
+
 /* vmport.c */
 #define TYPE_VMPORT "vmport"
 typedef uint32_t (VMPortReadFunc)(void *opaque, uint32_t address);
-- 
1.8.3.1