Add configuration to use the fixed DRAM mapping for the page pool (if available) instead of remapping dynamically to access L2 page tables and page data. Also, add logic in address environment creation to initialize the shared data at the beginning of the .bss/.data process memory region.

binfmt/binfmt_execmodule.c

@@ -179,10 +179,10 @@ int exec_module(FAR const struct binary_s *binp)
   /* Allocate the stack for the new task (always from the user heap) */
 
   stack = (FAR uint32_t*)kumm_malloc(binp->stacksize);
-  if (!tcb)
+  if (!stack)
     {
       err = ENOMEM;
-      goto errout_with_tcb;
+      goto errout_with_addrenv;
     }
 
   /* Restore the address environment */
@@ -196,6 +196,7 @@ int exec_module(FAR const struct binary_s *binp)
       goto errout_with_stack;
     }
 #endif
+
   /* Initialize the task */
 
   ret = task_init((FAR struct tcb_s *)tcb, binp->filename, binp->priority,
@@ -269,6 +270,10 @@ errout_with_stack:
   kumm_free(stack);
   goto errout;
 
+errout_with_addrenv:
+#ifdef CONFIG_ARCH_ADDRENV
+  (void)up_addrenv_restore(&oldenv);
+#endif
 errout_with_tcb:
   kmm_free(tcb);
 errout: