gem5:  Add huge page support, devtmpfs to config
diff --git a/arch/arm64/configs/gem5_defconfig b/arch/arm64/configs/gem5_defconfig
index 2a53cd7..033ab6d 100644
--- a/arch/arm64/configs/gem5_defconfig
+++ b/arch/arm64/configs/gem5_defconfig
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/arm64 3.16.0-rc3 Kernel Configuration
+# Linux/arm64 3.16.0-rc6 Kernel Configuration
 #
 CONFIG_ARM64=y
 CONFIG_64BIT=y
@@ -229,7 +229,9 @@
 # CONFIG_DEFAULT_NOOP is not set
 CONFIG_DEFAULT_IOSCHED="cfq"
 CONFIG_UNINLINE_SPIN_UNLOCK=y
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
 CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
 CONFIG_FREEZER=y
 
 #
@@ -304,7 +306,9 @@
 CONFIG_BOUNCE=y
 # CONFIG_KSM is not set
 CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
-# CONFIG_TRANSPARENT_HUGEPAGE is not set
+CONFIG_TRANSPARENT_HUGEPAGE=y
+# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
 # CONFIG_CLEANCACHE is not set
 CONFIG_CMA=y
 # CONFIG_CMA_DEBUG is not set
@@ -478,7 +482,7 @@
 CONFIG_UEVENT_HELPER=y
 CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
 CONFIG_DEVTMPFS=y
-# CONFIG_DEVTMPFS_MOUNT is not set
+CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_STANDALONE=y
 CONFIG_PREVENT_FIRMWARE_BUILD=y
 CONFIG_FW_LOADER=y
@@ -1937,8 +1941,8 @@
 CONFIG_TMPFS=y
 # CONFIG_TMPFS_POSIX_ACL is not set
 # CONFIG_TMPFS_XATTR is not set
-# CONFIG_HUGETLBFS is not set
-# CONFIG_HUGETLB_PAGE is not set
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
 # CONFIG_CONFIGFS_FS is not set
 # CONFIG_MISC_FILESYSTEMS is not set
 CONFIG_NETWORK_FILESYSTEMS=y