Your kernel config is off: for 1GB:...CONFIG_NOHIGHMEM=y# CONFIG_HIGHMEM4G is not set# CONFIG_HIGHMEM64G is not set# CONFIG_VMSPLIT_3G is not setCONFIG_VMSPLIT_3G_OPT=y# CONFIG_VMSPLIT_2G is not set # CONFIG_VMSPLIT_1G is not set...