Fixed up configuration support for nested/shadow paging

[palacios.git] / palacios / src / palacios / vmm_shadow_paging.c

diff --git a/palacios/src/palacios/vmm_shadow_paging.c b/palacios/src/palacios/vmm_shadow_paging.c
index 4f9d00f..bd39cba 100644 (file)
--- a/palacios/src/palacios/vmm_shadow_paging.c
+++ b/palacios/src/palacios/vmm_shadow_paging.c
@@ -141,9 +141,15 @@ int v3_init_shdw_pg_state(struct guest_info * core) {
 int v3_init_shdw_impl(struct v3_vm_info * vm) {
     struct v3_shdw_impl_state * impl_state = &(vm->shdw_impl);
     v3_cfg_tree_t * pg_cfg = v3_cfg_subtree(vm->cfg_data->cfg, "paging");
+    char * type_name = v3_cfg_val(pg_cfg, NULL);
     char * impl_name = v3_cfg_val(pg_cfg, "mode");
     struct v3_shdw_pg_impl * impl = NULL;
    
+    if (type_name && (strcasecmp(type_name, "shadow") != 0)) {
+       PrintDebug("Shadow paging not specified for VM.\n");
+       return 0;
+    }
+       
     V3_Print("Initialization of Shadow Paging implementation\n");
 
     impl = (struct v3_shdw_pg_impl *)v3_htable_search(master_shdw_pg_table, (addr_t)impl_name);