Re: [rfc 45/45] Modules: Hack to handle symbols that have a zero value

Christoph Lameter
2007-11-20T02:50:08Z

On Mon, 19 Nov 2007, Mathieu Desnoyers wrote:

> * clameter@sgi.com (clameter@sgi.com) wrote:
> > The module subsystem cannot handle symbols that are zero. It prints out
> > a message that these symbols are unresolved. Define a constant
> >
> > UNRESOLVED
> >
> > that is used to hold the value used for unresolved symbols. Set it to 1
> > (its hopefully unlikely that a symbol will have the value 1). This is necessary
> > so that the pda variable which is placed at offset 0 of the per cpu
> > segment is handled correctly.
> >
>
> Wouldn't it be better to simply return a standard ERR_PTR(-ENO....) ?

Good idea. But can you guarantee that this wont clash with an address?