64 bit kernel

[mjurado]

As far as I know all what is needed to switch from a 32 bit kernel to a 64 bit kernel


# bootinfo -K
32
#ln -sf /usr/lib/boot/unix_64 /unix
#ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
#bosboot -ad /dev/hdiskxx
#shutdown -r
# bootinfo -K
64

But before doing it I must be sure I am not using kernel extensions .....right?

How can I know if there are kernel extensions?

Is there something else I shuld be taking care of?

I am working with AIX 5.1

Thank you for your time.

 

[letis]

Well, if you say you need the 64 bits kernel I will assume you are right )

To check for 64bits kernel extension, look at /etc/inittab (do you have a load64bit entry ?); you can too issue the command :

genkex | grep syscall

If you have a syscalls64.ext printing, then the 64b kernel extensions are loaded.

I didn't see any recommandations, but it seems better not to load these extensions if you use a 64 bits kernel.

regards