kvm: sync vcpu state during initialization (Hollis Blanchard)

Currently on x86, qemu initializes CPUState but KVM ignores it and does its
own vcpu initialization. However, PowerPC KVM needs to be able to set the
initial register state to support the -kernel and -append options.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6060 c046a42c-6fe2-441c-8c8c-71466251a162

3 files changed, 27 insertions, 0 deletions

diff --git a/kvm-all.c b/kvm-all.c
index dad80df581..11034df27f 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -141,6 +141,21 @@ err:
     return ret;
 }
 
+int kvm_sync_vcpus(void)
+{
+    CPUState *env;
+
+    for (env = first_cpu; env != NULL; env = env->next_cpu) {
+        int ret;
+
+        ret = kvm_arch_put_registers(env);
+        if (ret)
+            return ret;
+    }
+
+    return 0;
+}
+
 /*
  * dirty pages logging control
  */
diff --git a/kvm.h b/kvm.h
index ac464ab1bf..efce1450d5 100644
--- a/kvm.h
+++ b/kvm.h
@@ -31,6 +31,7 @@ struct kvm_run;
 int kvm_init(int smp_cpus);
 
 int kvm_init_vcpu(CPUState *env);
+int kvm_sync_vcpus(void);
 
 int kvm_cpu_exec(CPUState *env);
 
diff --git a/vl.c b/vl.c
index c3a8d8fc9a..0a021515ab 100644
--- a/vl.c
+++ b/vl.c
@@ -5456,6 +5456,17 @@ int main(int argc, char **argv, char **envp)
     machine->init(ram_size, vga_ram_size, boot_devices, ds,
                   kernel_filename, kernel_cmdline, initrd_filename, cpu_model);
 
+    /* Set KVM's vcpu state to qemu's initial CPUState. */
+    if (kvm_enabled()) {
+        int ret;
+
+        ret = kvm_sync_vcpus();
+        if (ret < 0) {
+            fprintf(stderr, "failed to initialize vcpus\n");
+            exit(1);
+        }
+    }
+
     /* init USB devices */
     if (usb_enabled) {
         for(i = 0; i < usb_devices_index; i++) {