don't allow launch of an already running VM

[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 f57ddda..d3e4c93 100644 (file)
--- a/palacios/src/palacios/vmm_shadow_paging.c
+++ b/palacios/src/palacios/vmm_shadow_paging.c
@@ -197,6 +197,11 @@ int v3_init_shdw_impl(struct v3_vm_info * vm) {
 int v3_deinit_shdw_impl(struct v3_vm_info * vm) {
     struct v3_shdw_pg_impl * impl = vm->shdw_impl.current_impl;
 
+    if (impl == NULL) {
+       // Shadow paging not implemented
+       return 0;
+    }
+
     if (impl->deinit(vm) == -1) {
        PrintError("Error deinitializing shadow paging implementation\n");
        return -1;