Re: x86 (Linux Tiny): configure out support for some processors

From: Ingo Molnar
Date: Fri Jan 02 2009 - 11:21:42 EST



* Jaswinder Singh Rajput <jaswinderlinux@xxxxxxxxx> wrote:

> On Fri, Jan 2, 2009 at 9:09 PM, <Valdis.Kletnieks@xxxxxx> wrote:
> > On Fri, 02 Jan 2009 20:40:16 +0530, Jaswinder Singh Rajput said:
> >
> >> If I know what is my CPU there is no point for supporting all related
> >> CPUs in my kernel.
> >
> > EMBEDDED is for a large assortment of things, all of which are of the form:
> >
> > General users won't want to change Y, but if I know I don't need Y, there is
> > no point in supporting Y in the kernel.
> >
>
> On 64 bit AMD machine I was getting :
> [ 0.000000] KERNEL supported cpus:
> [ 0.000000] Intel GenuineIntel
> [ 0.000000] AMD AuthenticAMD
> [ 0.000000] Centaur CentaurHauls
>
> By using the following patch I get rid of extra CPU support and also
> reduces size of the kernel.

So you want to save kernel size by making less generic kernels tailored to
a single box [yours in this case] - basically embedding the kernel on it?

> Let me know why should I choose EMBEDDED option ? I know I am not using
> Embbeded machine and I do not need embbeded features on my machine.
> [...]

that is what CONFIG_EMBEDDED=y means in broad terms: "make the kernel more
specific [more embedded] to a particular hw/sw combination".

Ingo
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