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I'm building for the v850, which has no MMU. Starting with 2.5.55, I'm getting link errors like: kernel/extable.c:29: undefined reference to `search_extable' I didn't have to worry about this with earlier kernels, and it looks like what happened is that previously arch-specific code was consolidated into the generic kernel. As far as I can see, the purpose of exception tables is to deal with unexpected memory access traps and on the v850, this basically can't happen (there's no MMU, and no way I know of to detect non-existant memory). So I'd like to make the generic exception handling stuff optional. However, I'm not sure the best way to do this -- I could try to make it dependent on CONFIG_MMU, but are there non-MMU processors that _can_ usefully use exception tables (in which case perhaps there should just be a separate CONFIG_EXTABLES or something)? [Oh, and also, please tell me if I'm mistaken about the purpose of these tables and really _should_ just implement them.] Thanks, -Miles -- Somebody has to do something, and it's just incredibly pathetic that it has to be us. -- Jerry Garcia - 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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