What is a regparm enabled kernel?

psofa · Guru Joined: 28 Feb 2004 Posts: 485

what is it? does it make things faster?how to enable it?
_________________
psofa

NeddySeagoon · Posted: Wed Apr 07, 2004 9:13 pm Post subject:

psofa,

The kerenl help tells you about it. If you use any binary kernel modules, like nVida, they break.
It should be faster as function paramters are passed in CPU registers as far a possible instead of on the stack.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

psofa · Guru Joined: 28 Feb 2004 Posts: 485

does it need a whole system recompile?
_________________
psofa

NeddySeagoon · Posted: Wed Apr 07, 2004 9:33 pm Post subject:

psofa,

No - it only applies to the kernel and modules.
Be sure to do a make clean in the kernel tree before you start the recompile.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

psofa · Guru Joined: 28 Feb 2004 Posts: 485

ok and how do enable it?
_________________
psofa

NeddySeagoon · Posted: Thu Apr 08, 2004 4:48 pm Post subject:

psofa,

Its the last item under processor type and features in kernel config. It says