> i have seen many places in kernel where the variables specially the > structures should be of fixed size independent of the architecture. i went > through the definitions of them but dint get clearly (or frankly say > ...dint get them even a bit) . >
Hi Mohit I'm not sure whether we are interpreting your question correctly. Do you mean 1. you've seen some code in the kernel which you think means the size of a structure/ variable (and its resulting binary footprint) is set to be the same (in bytes), regardless of the architecture, and you are confused about it? 2. you think that there should be a way of fixing the structure/variable (binary footprint) size to be the same (in bytes) regardless of the architecture and you are wondering if this is possible? In my (uninformed) opinion (2) is not be possible with the kernel due to portability issues - not only do natural word types differ (as others here are explaining) but you have no control over what optimization settings the kernel's user might set in gcc, for example. This is one of the problems with trying to maintain closed-source drivers and other binary code for the kernel, as I understand. Thanks Julie
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