[ltp] Re: kernel config file for Thinkpad T61

[Robert Tomsick]

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On Sun, 2011-01-09 at 23:36 +0100, Thomas Hartwig wrote:
> On 01/09/2011 03:43 PM, ~D wrote:
> > On 01/09/2011 03:40 PM, Dmitriy Ugnichenko wrote:
> >> You know, I'm not sure, that it's a perfect idea, assuming you're
> >> using Debian|Ubuntu. In most cases the default kernel already includes
> >> all you might need, using modules for it. In some cases, of course, if
> >> your hardware is not supported you may configure by hands. As to me, I
> >> make such configs only using Gentoo and for fun ;)
> > Apart from the option to build a RT kernel, the question is whether is
> > improves things like startup time and system load when you have a very
> > dedicated and small kernel config file.
>=20
> I believe you will not achieve very much improvements. All the hassle
> maintaining the kernel it is not worth it. There have been days some
> years ago where you needed an own kernel but this is obsolete with
> current distros. Startup time of Ubuntu is fast as hell, faster than
> Windows Vista/7.

There are at least two advantages that I can think of to maintaining
your own kernel builds (these are the two reasons that I do so):

1) The ability to use grsecurity/PaX to greatly enhance system security.

2) The ability to apply fixes, etc. before they make it to mainline (I'm
primarily concerned with thinkpad_acpi and other ThinkPad-related
patches).  This is rarely critical, but if you're going to build your
own kernel for other reasons it is nice to get the latest code without
having to wait for a downstream release.

Considering that many distro kernels seem to be rather lacking when it
comes to NX and ASLR support, I suspect that I will be building my own
kernel for quite some time to come...

Cheers,
Rob

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