X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm.c;h=1571c4871fc966941ad869315659fd2173a5e2ba;hb=28cfe68985ef4360c9bd7428a19c222b295e9d85;hp=fcc6ea55be17391534bff62893118e1018c58b61;hpb=068d7e66db537f981fde19a098a12e4390fa3de4;p=palacios.git

diff --git a/palacios/src/palacios/vmm.c b/palacios/src/palacios/vmm.c
index fcc6ea5..1571c48 100644
--- a/palacios/src/palacios/vmm.c
+++ b/palacios/src/palacios/vmm.c
@@ -174,9 +174,17 @@ void v3_yield_cond(struct guest_info * info) {
     }
 }
 
+/* 
+ * unconditional cpu yield 
+ * if the yielding thread is a guest context, the guest quantum is reset on resumption 
+ * Non guest context threads should call this function with a NULL argument
+ */
 void v3_yield(struct guest_info * info) {
     V3_Yield();
-    rdtscll(info->yield_start_cycle);
+
+    if (info) {
+	rdtscll(info->yield_start_cycle);
+    }
 }
 
 
@@ -188,3 +196,25 @@ void v3_interrupt_cpu(struct guest_info * info, int logical_cpu) {
 	(os_hooks)->interrupt_cpu(info, logical_cpu);
     }
 }
+
+
+
+int v3_vm_enter(struct guest_info * info) {
+    switch (v3_cpu_types[info->cpu_id]) {
+#ifdef CONFIG_SVM
+	case V3_SVM_CPU:
+	case V3_SVM_REV3_CPU:
+	    return v3_svm_enter(info);
+	    break;
+#endif
+#if CONFIG_VMX && 0
+	case V3_VMX_CPU:
+	case V3_VMX_EPT_CPU:
+	    return v3_vmx_enter(info);
+	    break;
+#endif
+	default:
+	    PrintError("Attemping to enter a guest on an invalid CPU\n");
+	    return -1;
+    }
+}