Understanding Linux FAT fs (FAT, VFAT, FAT32, exFAT) support

I'm trying to understand which FAT based filesystems my Real Time 2.6 Linux supports. I have tried 3 things: 1. /proc/filesystems shows vfat among others non-relevant for the question (like ext2, etc) 2. /proc/config.gz shows:

# DOS/FAT/NT Filesystems
    #
    CONFIG_FAT_FS=y
    CONFIG_MSDOS_FS=y
    CONFIG_VFAT_FS=y
    CONFIG_FAT_DEFAULT_CODEPAGE=437
    CONFIG_FAT_DEFAULT_IOCHARSET="ascii"
    # CONFIG_NTFS_FS is not set

3. Commands like ls /lib/modules/$(uname -r)/kernel/fs show nothing as .../fs folder doesn't exist. So, looking at this, is safe to asume that FAT and VFAT are supported, but what about FAT32 or exFAT? It's not explicitly specified. How can I know?