Messages in this thread | | | Date | Mon, 19 Nov 2007 22:29:04 -0500 | From | Mathieu Desnoyers <> | Subject | Re: [rfc 45/45] Modules: Hack to handle symbols that have a zero value |
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* Christoph Lameter (clameter@sgi.com) wrote: > 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? >
linux/err.h assumes that the last page of the address space is never ever used. Is that a correct assumption ?
-- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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