Date: Sat, 30 Aug 2014 14:28:03 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Jamie Griffin <griffin8j@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Loading kernel modules on startup Message-ID: <20140830122803.GA14170@slackbox.erewhon.home> In-Reply-To: <540172F5.4020707@gmail.com> References: <540172F5.4020707@gmail.com>
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On Sat, Aug 30, 2014 at 07:45:09AM +0100, Jamie Griffin wrote:
> I'm just wondering about the correct way to load kernel modules; namely,=
=20
> specifying them in /boot/loader.conf or /etc/rc.conf. For example;
Both are correct. According to rc.conf(5):
kld_list (str) A list of kernel modules to load right after the local
disks are mounted. Loading modules at this point in the boot
process is much faster than doing it via /boot/loader.conf
for those modules not necessary for mounting local disk.
> Then, there is kld_list=3Dkldi915 for the vt console driver, and also=20
> kern.vty=3Dvt and hw.vga.textmode=3D1 in loader.conf for the same module.
The first statement is loading a module. The second and third statements are
kernel environment settings. According to vt(4), they can only be set in
loader.conf.
> Incidentally, the vt driver did not work properly for me when I used the=
=20
> latter in loader.conf and I had to use the kld_list line in rc.conf(5).
The syntax is different. In loader.conf it should be;
i915kms_load=3D"YES"
While in rc.conf you should use;
kld_list=3D"i915kms"
> What is the 'right' method for kernel module loading and is it just=20
> easier to compile them into the kernel going forward?
You can compile most modules into a custom kernel if you like. But IMO it's
not really worth the extra effort.
In any case I would advise you to keep a GENERIC kernel and modules around.
If your motherboard dies and you have to replace it you might end up with a
system that doesn't work properly with the custom kernel.
Roland
--=20
R.F.Smith http://rsmith.home.xs4all.nl/
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