[Qemu-devel] [PATCH v2 8/9] Initialize in-kernel irqchip

[Glauber Costa <glommer@redhat.com>]

Now that we have all devices set up, this patch initializes the irqchip.
This is dependant on the io-thread, since we need someone to pull ourselves
out of the halted state.

I believe this should be the default when we are running over the io-thread.
Later on, I plan to post a patch that makes it optional.

Signed-off-by: Glauber Costa <glommer@redhat.com>
---
 kvm-all.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/kvm-all.c b/kvm-all.c
index 418d8bc..f33354d 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -453,6 +453,22 @@ int kvm_set_irq(int irq, int level, int *status)
 
     return 1;
 }
+
+static int kvm_create_irqchip(KVMState *s)
+{
+    int ret = 0;
+#if defined(CONFIG_IOTHREAD)
+    if (!kvm_check_extension(s, KVM_CAP_IRQCHIP))
+        return -1;
+
+    ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP);
+    if (ret < 0)
+        return ret;
+
+    s->irqchip_in_kernel = 1;
+#endif
+    return ret;
+}
 #endif
 
 int kvm_init(int smp_cpus)
@@ -541,6 +557,11 @@ int kvm_init(int smp_cpus)
     }
 #endif
 
+#if defined(KVM_CAP_IRQCHIP)
+    ret = kvm_create_irqchip(s);
+    if (ret < 0)
+        goto err;
+#endif
     ret = kvm_arch_init(s, smp_cpus);
     if (ret < 0)
         goto err;
-- 
1.6.2.5