Re: [RFC] gcc feature request: Moving blocks into sections

Peter Zijlstra
2013-08-13T07:51:03Z

On Mon, Aug 12, 2013 at 10:47:37AM -0700, H. Peter Anvin wrote:
> On 08/12/2013 09:09 AM, Peter Zijlstra wrote:
> >>
> >> On the majority of architectures, including x86, you cannot simply copy
> >> a piece of code elsewhere and have it still work.
> >
> > I thought we used -fPIC which would allow just that.
> >
>
> Doubly wrong. The kernel is not compiled with -fPIC, nor does -fPIC
> allow this kind of movement for code that contains intramodule
> references (that is *all* references in the kernel). Since we really
> doesn't want to burden the kernel with a GOT and a PLT, that is life.

OK. never mind then..