Re: ip_contrack module refuses to load...

[david mosberger <dmosberger@gmail.com>]

Ah, I understand now what you mean.  Sounds to me like the generic
module loader infrastructure needs to be changed to support the
IA64-usage.  On IA64, we want to have per-CPU variables remapped even
on UP, because it allows for more efficient and TLB-pinned addressing
(which is relied upon in some low-level code for correctness, IIRC).

  --david

On 8/30/05, Peter Chubb <peterc@gelato.unsw.edu.au> wrote:
> >>>>> "david" = david mosberger <dmosberger@gmail.com> writes:
> 
> david> The module-loader does its own UP special-casing.  For
> david> example, percpu_modcopy() is a dummy routine in the UP case,
> david> apparently because there is not supposed to be any per-CPU
> david> module data for the UP case.
> 
> Precisely.  All the other architectures redefine the DECLARE_PER_CPU()
> etc., to declare plain variables (i.e., not in a special section) for
> UP.  So the module loader doesn't have to do anything special for UP,
> because for UP a per-cpu variable is just the same as a normal
> variable.
> 
> This doesn't work for IA64, which maps per_cpu variables into a
> separate segment for both UP and SMP.
> 
> --
> Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
> The technical we do immediately,  the political takes *forever*
> 


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