[Qemu-devel] [6060] kvm: sync vcpu state during initialization (Hollis Blanchard)

[Qemu-devel] [6060] kvm: sync vcpu state during initialization (Hollis Blanchard)

[Anthony Liguori]

Revision: 6060
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6060
Author:   aliguori
Date:     2008-12-15 22:20:42 +0000 (Mon, 15 Dec 2008)

Log Message:
-----------
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>

Modified Paths:
--------------
    trunk/kvm-all.c
    trunk/kvm.h
    trunk/vl.c

Modified: trunk/kvm-all.c
===================================================================
--- trunk/kvm-all.c	2008-12-15 22:07:50 UTC (rev 6059)
+++ trunk/kvm-all.c	2008-12-15 22:20:42 UTC (rev 6060)
@@ -141,6 +141,21 @@
     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
  */

Modified: trunk/kvm.h
===================================================================
--- trunk/kvm.h	2008-12-15 22:07:50 UTC (rev 6059)
+++ trunk/kvm.h	2008-12-15 22:20:42 UTC (rev 6060)
@@ -31,6 +31,7 @@
 int kvm_init(int smp_cpus);
 
 int kvm_init_vcpu(CPUState *env);
+int kvm_sync_vcpus(void);
 
 int kvm_cpu_exec(CPUState *env);
 

Modified: trunk/vl.c
===================================================================
--- trunk/vl.c	2008-12-15 22:07:50 UTC (rev 6059)
+++ trunk/vl.c	2008-12-15 22:20:42 UTC (rev 6060)
@@ -5456,6 +5456,17 @@
     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++) {