kldload: can't load linux: ERROR????

[Daniel Bitencourt Cadorin]

I am trying to install the o package linux_base-8-8.0_6.tbz in a jail
(FreeBSD 5.4). However it is appearing the following message of error:

hostname# pkg_add linux_base-8-8.0_6.tbz
Linux mode is not enabled.
Loading linux kernel module now...
kldload: can't load linux: Operation not permitted
The linux kernel module could not be loaded.
Please enable linux mode manually and retry.
pkg_add: install script returned error status

what I must make?

Thank you!
 
Daniel Bitencourt Cadorin