etherannotate_xen.diff

//diff -u xen_ether_stock/xen/common/domctl.c xen_etherannotate/xen/common/domctl.c
// Patch for changes made to Xen Ether 0.1 - fixes the double pause bug
--- xen_ether_stock/xen/common/domctl.c	2010-05-04 03:19:35.000000000 -0600
+++ xen_etherannotate/xen/common/domctl.c	2010-05-04 03:32:08.000000000 -0600
@@ -219,7 +219,8 @@
 		break;
 	}
 
-        domain_pause(d);
+   if(op->u.ether.command_code != XEN_DOMCTL_ETHER_READ_GUEST)
+      domain_pause(d);
 	switch(op->u.ether.command_code)
 	{
 		/* enable single stepping mode */
@@ -337,15 +338,13 @@
 			}
 			else
 			{
-                   int length = op->u.ether.data_length;
-                   char *buffer =
-                           (char*) xmalloc_bytes(length);
-                   unsigned long va = op->u.ether.guest_va;
-			       unsigned char *guest_buffer = 
-				       op->u.ether.guest_buffer;
-			       uint32_t offset = 0, copylength = 0;
-			       int to_write = length;
-			       int written = 0;
+            int length = op->u.ether.data_length;
+            char *buffer = (char*) xmalloc_bytes(length);
+            unsigned long va = op->u.ether.guest_va;
+            unsigned char *guest_buffer = op->u.ether.guest_buffer;
+            uint32_t offset = 0, copylength = 0;
+            int to_write = length;
+            int written = 0;
 
 			       if(buffer != NULL)
                    {
@@ -519,14 +518,24 @@
 
 			ret = 0;
 			break;
+			
+		case XEN_DOMCTL_ETHER_CLEAR_CR3:
+
+			printk("Clearing cr3 filter list\n");
+
+			ether_clear_cr3_filter(d);
+
+			ret = 0;
+			break;
 
 		default:
 			printk("ETHER: invalid command to domctl\n");
 			ret = -ENOSYS;
 			break;
 	}
-        domain_unpause(d); /* causes guest to latch new status */
-        rcu_unlock_domain(d);
+	   if(op->u.ether.command_code != XEN_DOMCTL_ETHER_READ_GUEST)
+         domain_unpause(d); /* causes guest to latch new status */
+      rcu_unlock_domain(d);
     }
     break;