quick fix for segmentation bug:

diff --git a/palacios/src/geekos/svm_io.c b/palacios/src/geekos/svm_io.c
index 96c746d..e573549 100644 (file)
--- a/palacios/src/geekos/svm_io.c
+++ b/palacios/src/geekos/svm_io.c
@@ -55,11 +55,19 @@ int handle_svm_io_ins(struct guest_info * info) {
   
   vmm_io_hook_t * hook = get_io_hook(&(info->io_map), io_info->port);
   uint_t read_size = 0;
-  addr_t base_addr = guest_state->es.base;
+  addr_t base_addr = 0;
   addr_t dst_addr = 0;
   uint_t rep_num = 1;
   ullong_t mask = 0;
 
+
+  if (info->cpu_mode == REAL) {
+    base_addr = (guest_state->es.base << 4);
+  } else if (info->cpu_mode == PROTECTED) {
+    base_addr = guest_state->es.base;
+  }
+
+
   // This is kind of hacky...
   // direction can equal either 1 or -1
   // We will multiply the final added offset by this value to go the correct direction
@@ -177,11 +185,19 @@ int handle_svm_io_outs(struct guest_info * info) {
   
   vmm_io_hook_t * hook = get_io_hook(&(info->io_map), io_info->port);
   uint_t write_size = 0;
-  addr_t base_addr = guest_state->ds.base;
+  addr_t base_addr = 0;
   addr_t dst_addr = 0;
   uint_t rep_num = 1;
   ullong_t mask = 0;
 
+
+
+  if (info->cpu_mode == REAL) {
+    base_addr = (guest_state->ds.base << 4);
+  } else if (info->cpu_mode == PROTECTED) {
+    base_addr = guest_state->ds.base;
+  }
+
   // This is kind of hacky...
   // direction can equal either 1 or -1
   // We will multiply the final added offset by this value to go the correct direction