configs: Fix MemorySize division

The memory size is expected to be an integer.

Jira: https://gem5.atlassian.net/browse/GEM5-806

Change-Id: I44b2d423a3478d2598950779222151f09970cbd8
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37255
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Srikant Bharadwaj <srikant.bharadwaj@amd.com>
diff --git a/configs/topologies/MeshDirCorners_XY.py b/configs/topologies/MeshDirCorners_XY.py
index 7d065de..e0aea52 100644
--- a/configs/topologies/MeshDirCorners_XY.py
+++ b/configs/topologies/MeshDirCorners_XY.py
@@ -218,6 +218,6 @@
         for n in numa_nodes:
             if n:
                 FileSystemConfig.register_node(n,
-                    MemorySize(options.mem_size) / num_numa_nodes, i)
+                    MemorySize(options.mem_size) // num_numa_nodes, i)
             i += 1
 
diff --git a/configs/topologies/Mesh_XY.py b/configs/topologies/Mesh_XY.py
index 64a8506..faec1e3 100644
--- a/configs/topologies/Mesh_XY.py
+++ b/configs/topologies/Mesh_XY.py
@@ -178,4 +178,4 @@
     def registerTopology(self, options):
         for i in range(options.num_cpus):
             FileSystemConfig.register_node([i],
-                    MemorySize(options.mem_size) / options.num_cpus, i)
+                    MemorySize(options.mem_size) // options.num_cpus, i)