Linux: Add support for Intel 32bit with PAE

Author: gcmoreira

volatility3/framework/automagic/linux.py

@@ -71,6 +71,12 @@ def stack(
                 elif "init_level4_pgt" in table.symbols:
                     layer_class = intel.LinuxIntel32e
                     dtb_symbol_name = "init_level4_pgt"
+                elif (
+                    "pkmap_count" in table.symbols
+                    and table.get_symbol("pkmap_count").type.count == 512
+                ):
+                    layer_class = intel.LinuxIntelPAE
+                    dtb_symbol_name = "swapper_pg_dir"
                 else:
                     layer_class = intel.LinuxIntel
                     dtb_symbol_name = "swapper_pg_dir"