diff -Nurp sabayon/config.old/ec2-3.7-amd64.config sabayon/config/ec2-3.7-amd64.config
--- sabayon/config.old/ec2-3.7-amd64.config	2013-01-20 15:17:20.000000000 +0000
+++ sabayon/config/ec2-3.7-amd64.config	2013-02-11 13:16:15.000000000 +0000
@@ -785,7 +785,8 @@ CONFIG_HAVE_BPF_JIT=y
 # Generic Driver Options
 #
 CONFIG_UEVENT_HELPER_PATH=""
-# CONFIG_DEVTMPFS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_STANDALONE=y
 CONFIG_PREVENT_FIRMWARE_BUILD=y
 CONFIG_FW_LOADER=y
diff -Nurp sabayon/config.old/ec2-3.7-x86.config sabayon/config/ec2-3.7-x86.config
--- sabayon/config.old/ec2-3.7-x86.config	2013-01-20 15:17:20.000000000 +0000
+++ sabayon/config/ec2-3.7-x86.config	2013-02-11 13:16:27.000000000 +0000
@@ -808,7 +808,8 @@ CONFIG_WIRELESS=y
 # Generic Driver Options
 #
 CONFIG_UEVENT_HELPER_PATH=""
-# CONFIG_DEVTMPFS is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_STANDALONE=y
 CONFIG_PREVENT_FIRMWARE_BUILD=y
 CONFIG_FW_LOADER=y