diff --git a/configs/mikroe-stm32f4/scripts/memory.ld b/configs/mikroe-stm32f4/scripts/memory.ld
index ffe8054dba..3a7480d871 100644
--- a/configs/mikroe-stm32f4/scripts/memory.ld
+++ b/configs/mikroe-stm32f4/scripts/memory.ld
@@ -96,5 +96,5 @@ MEMORY
 
     ksram (rwx)      : ORIGIN = 0x20000000, LENGTH = 4K
     usram (rwx)      : ORIGIN = 0x20001000, LENGTH = 4K
-    xsram (rwx)      : ORIGIN = 0x20001000, LENGTH = 104K
+    xsram (rwx)      : ORIGIN = 0x20002000, LENGTH = 104K
 }
diff --git a/configs/sam3u-ek/scripts/memory.ld b/configs/sam3u-ek/scripts/memory.ld
index 57b97d9156..70369776b4 100644
--- a/configs/sam3u-ek/scripts/memory.ld
+++ b/configs/sam3u-ek/scripts/memory.ld
@@ -89,7 +89,7 @@ MEMORY
 
     ksram1 (rwx) : ORIGIN = 0x20000000, LENGTH = 4K
     usram1 (rwx) : ORIGIN = 0x20001000, LENGTH = 4K
-    xsram1 (rwx) : ORIGIN = 0x20001000, LENGTH = 24K
+    xsram1 (rwx) : ORIGIN = 0x20002000, LENGTH = 24K
 
     /* 16Kb SRAM */
 
diff --git a/configs/stm3240g-eval/knxwm/defconfig b/configs/stm3240g-eval/knxwm/defconfig
index b573bcb148..4f2fc623e7 100644
--- a/configs/stm3240g-eval/knxwm/defconfig
+++ b/configs/stm3240g-eval/knxwm/defconfig
@@ -26,7 +26,7 @@ CONFIG_PASS1_TARGET="all"
 CONFIG_PASS1_BUILDIR="configs/stm3240g-eval/kernel"
 CONFIG_PASS1_OBJECT=""
 CONFIG_NUTTX_KERNEL=y
-CONFIG_NUTTX_USERSPACE=0x08020000
+CONFIG_NUTTX_USERSPACE=0x08040000
 
 #
 # Binary Output Formats
@@ -685,7 +685,9 @@ CONFIG_NXSTART_DEVNO=0
 #
 # Memory Management
 #
-# CONFIG_MM_MULTIHEAP is not set
+CONFIG_MM_MULTIHEAP=y
+CONFIG_MM_KERNEL_HEAP=y
+CONFIG_MM_KERNEL_HEAPSIZE=8192
 # CONFIG_MM_SMALL is not set
 CONFIG_MM_REGIONS=2
 # CONFIG_GRAN is not set
diff --git a/configs/stm3240g-eval/scripts/memory.ld b/configs/stm3240g-eval/scripts/memory.ld
index 3ae5e16366..a1b347ccb4 100644
--- a/configs/stm3240g-eval/scripts/memory.ld
+++ b/configs/stm3240g-eval/scripts/memory.ld
@@ -44,7 +44,7 @@
  * where the code expects to begin execution by jumping to the entry point in
  * the 0x0800:0000 address range.
  *
- * For MPU support, the kernel-mode NuttX section is assumed to be 128Kb of
+ * For MPU support, the kernel-mode NuttX section is assumed to be 256Kb of
  * FLASH and 4Kb of SRAM.  That is an excessive amount for the kernel which
  * should fit into 64KB and, of course, can be optimized as needed (See
  * also configs/stm3240g-eval/scripts/kernel-space.ld).  Allowing the
@@ -88,13 +88,13 @@ MEMORY
 {
     /* 1024Kb FLASH */
 
-    kflash (rx)      : ORIGIN = 0x08000000, LENGTH = 128K
-    uflash (rx)      : ORIGIN = 0x08020000, LENGTH = 128K
-    xflash (rx)      : ORIGIN = 0x08040000, LENGTH = 768K
+    kflash (rx)      : ORIGIN = 0x08000000, LENGTH = 256K
+    uflash (rx)      : ORIGIN = 0x08040000, LENGTH = 256K
+    xflash (rx)      : ORIGIN = 0x08080000, LENGTH = 512K
 
     /* 112Kb of contiguous SRAM */
 
     ksram (rwx)      : ORIGIN = 0x20000000, LENGTH = 4K
     usram (rwx)      : ORIGIN = 0x20001000, LENGTH = 4K
-    xsram (rwx)      : ORIGIN = 0x20001000, LENGTH = 104K
+    xsram (rwx)      : ORIGIN = 0x20002000, LENGTH = 104K
 }
diff --git a/configs/stm32f429i-disco/scripts/memory.ld b/configs/stm32f429i-disco/scripts/memory.ld
index 14a9d8db54..df11b9e3d6 100644
--- a/configs/stm32f429i-disco/scripts/memory.ld
+++ b/configs/stm32f429i-disco/scripts/memory.ld
@@ -97,5 +97,5 @@ MEMORY
 
     ksram (rwx)      : ORIGIN = 0x20000000, LENGTH = 4K
     usram (rwx)      : ORIGIN = 0x20001000, LENGTH = 4K
-    xsram (rwx)      : ORIGIN = 0x20001000, LENGTH = 104K
+    xsram (rwx)      : ORIGIN = 0x20002000, LENGTH = 104K
 }
diff --git a/configs/stm32f4discovery/scripts/memory.ld b/configs/stm32f4discovery/scripts/memory.ld
index ffe8054dba..3a7480d871 100644
--- a/configs/stm32f4discovery/scripts/memory.ld
+++ b/configs/stm32f4discovery/scripts/memory.ld
@@ -96,5 +96,5 @@ MEMORY
 
     ksram (rwx)      : ORIGIN = 0x20000000, LENGTH = 4K
     usram (rwx)      : ORIGIN = 0x20001000, LENGTH = 4K
-    xsram (rwx)      : ORIGIN = 0x20001000, LENGTH = 104K
+    xsram (rwx)      : ORIGIN = 0x20002000, LENGTH = 104K
 }