16 MB for Qemu is to much, qemu-system-or1k just emulates 32MB RAM.

target/config/Config.in.runtime

@@ -83,7 +83,6 @@ source "target/config/Config.in.scripts"
 
 config ADK_RUNTIME_TMPFS_SIZE
 	string "size of /tmp in memory (kB)"
-	default "16384" if ADK_TARGET_QEMU
 	default "16384" if ADK_TARGET_VBOX
 	default "16384" if ADK_TARGET_SYSTEM_LEMOTE_YEELONG
 	default "32768" if ADK_TARGET_SYSTEM_IBM_X40