Patchwork [v2,8/9] Initialize in-kernel irqchip

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Submitter Glauber Costa
Date Nov. 16, 2009, 5:12 p.m.
Message ID <1258391527-18840-9-git-send-email-glommer@redhat.com>
Download mbox | patch
Permalink /patch/38530/
State New
Headers show

Comments

Glauber Costa - Nov. 16, 2009, 5:12 p.m.
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 |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

Patch

diff --git a/kvm-all.c b/kvm-all.c
index c46a411..7a3671f 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -433,6 +433,22 @@  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;
+}
+
 int kvm_init(int smp_cpus)
 {
     static const char upgrade_note[] =
@@ -519,6 +535,10 @@  int kvm_init(int smp_cpus)
     }
 #endif
 
+    ret = kvm_create_irqchip(s);
+    if (ret < 0)
+        goto err;
+
     ret = kvm_arch_init(s, smp_cpus);
     if (ret < 0)
         goto err;