Messages in this thread | | | Subject | Re: Special place for tird-party modules. | From | Valdis.Kletnieks@vt ... | Date | Wed, 28 Apr 2004 15:18:25 -0400 |
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On Wed, 28 Apr 2004 18:14:24 +0200, Goran Cengic <cengic@s2.chalmers.se> said:
> I do understand that many developers have several kernel version installed at > the same time but is it possible to share between the versions at least the > modules that are not developed as the part of the kernel? > > If I'm missing something cruical please point it out to me.
What you're missing is the reason for modversions to exist - the fact that the kernel API *does* change between releases, and even within the same source tree (UP vs SMP builds, for instance). If we supported what you're suggesting, then the following *will* happen:
1) Binary module for 2.6.N is released that uses an API that takes 5 parameters. 2) 2.6.N+1 comes out, and said API has another parameter added (see the recent tweak-fest for elf_map() for an actual example). 3) User loads old binary into kernel. 4) Kernel OOPs when it dereferences the non-existent 6th parameter that wasn't passed by the un-updated binary.
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