2009/10/19 Greg KH <greg@xxxxxxxxx>: > On Mon, Oct 19, 2009 at 01:45:20PM +0200, Carmelo Amoroso wrote: >> Just a few other notes. The current implementation I did based on SysV >> has a drawback that is not backward compatible, so you cannot use old >> modules with a kernel with the option enabled due to changes on struct >> kernel_symbol. > > Why would this be a problem? Whenever making a kernel config change, > you should be able to rebuild everything, as lots of other configuration > options are that way. > This is not always true... there could be cases in which you cannot recompile old modules (e.g vendors that provide non GPL modules) >> Anyway I've just figured out how to change it to remove this limitation. >> I need some time to review these patches. Further, the newer >> implementation based on GNU hash which we are working on right now, >> will not require the extra .undef.hash ELF sections because hash >> values are already embedded into the GNU hash table, with a reduction >> in terms of footprint. > > Footprint in the memory for the loaded module, or just in the footprint > for the module on the disk? > both > I'd be interested in seeing your patches when you have something that > works for the current Linus kernel tree. > sure. I tested weeks ago it on a 2.6.30 tree on x86 at it worked without problems. I had to hack the x86 linker scripts to remove a check on file size that sounded strange to me. carmelo > thanks, > > greg k-h > -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
