3 - CONFIG_HIGH_RES_TIMERS
5 - CONFIG_PARAVIRT_GUESt
23 + CONFIG_DEVTMPFS (sys-fs/udev)
24 + CONFIG_TASKSTATS, CONFIG_TASK_DELAY_ACCT, CONFIG_TASK_IO_ACCOUNTING (iotop)
25 + CONFIG_AUDITSYSCALL (sys-auth/consolekit)
30 + CONFIG_TMPFS_POSIX_ACL (sys-auth/consolekit)
31 + CONFIG_USB_SUSPEND (sys-fs/udisks)