X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm_halt.c;h=7c1abf5f1963a9e52b7e40fd56c440e5cbafeff4;hb=a7dc3322984b3c76fe990de506418e180ec1b0de;hp=9b95739be2c35325ed31927f44967129ac0b4103;hpb=4f7c3b759e3889870c5b5e7d09b3ffcc168e5632;p=palacios.git

diff --git a/palacios/src/palacios/svm_halt.c b/palacios/src/palacios/svm_halt.c
index 9b95739..7c1abf5 100644
--- a/palacios/src/palacios/svm_halt.c
+++ b/palacios/src/palacios/svm_halt.c
@@ -1,48 +1,75 @@
-/* Northwestern University */
-/* (c) 2008, Peter Dinda <pdinda@northwestern.edu> */
+/* 
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National 
+ * Science Foundation and the Department of Energy.  
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico.  You can find out more at 
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Peter Dinda <pdinda@northwestern.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
+ * All rights reserved.
+ *
+ * Author: Peter Dinda <pdinda@northwestern.edu>
+ *
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+
+
+
+
 
 #include <palacios/svm_halt.h>
 #include <palacios/vmm_intr.h>
-// From GeekOS
-void Yield(void);
+
+
+#ifndef DEBUG_HALT
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
 
 
 //
 // This should trigger a #GP if cpl!=0, otherwise, yield to host
 //
 
-int handle_svm_halt(struct guest_info * info)
+int v3_handle_svm_halt(struct guest_info * info)
 {
-  if (info->cpl!=0) { 
-    v3_raise_exception(info, GPF_EXCEPTION);
-  } else {
+    if (info->cpl!=0) { 
+	v3_raise_exception(info, GPF_EXCEPTION);
+    } else {
     
-    // What we should do is starting waiting on an OS event that will
-    // result in an injection of an interrupt.
+	// What we should do is starting waiting on an OS event that will
+	// result in an injection of an interrupt.
+	
+	// What we will hackishly do instead is resume on any event
+	// Plus is this totally GeekOS specific
+	
+	ullong_t yield_start = 0;
+	ullong_t yield_stop = 0;
+	uint32_t gap = 0;
+	
+	PrintDebug("GeekOS Yield\n");
+	
+	rdtscll(yield_start);
+	V3_Yield();
+	rdtscll(yield_stop);
     
-    // What we will hackishly do instead is resume on any event
-    // Plus is this totally GeekOS specific
     
-    ullong_t yield_start = 0;
-    ullong_t yield_stop = 0;
-    uint32_t gap = 0;
-    
-    PrintDebug("GeekOS Yield\n");
-    
-    rdtscll(yield_start);
-    Yield();
-    rdtscll(yield_stop);
-    
-    
-    //v3_update_time(info, yield_stop - yield_start);
-    gap = yield_stop - yield_start;
-    v3_raise_irq(info, 0);
-    
-    PrintDebug("GeekOS Yield Done (%d cycles)\n", gap);
-    
-    info->rip+=1;
-  }
-    
-  return 0;
-
+	//v3_update_time(info, yield_stop - yield_start);
+	gap = yield_stop - yield_start;
+	if (!v3_intr_pending(info)) {
+	    v3_raise_irq(info, 0);
+	}
+	
+	PrintDebug("GeekOS Yield Done (%d cycles)\n", gap);
+	
+	info->rip+=1;
+    }
+    return 0;
 }