Hello, I have a machine with 2.6.25 kernel (FC9) and I want to build on it a module which can be loaded into 2.6.23 kernel. (fc8). I am building the module on FC9 against 2.6.23 tree and it is ok. I can insmod the module in 2.6.23 kernel. However, when I try to insmod the module on 2.6.25 tree I get "invalid module format". This same module **can** be built on 2.6.25 kernel ; I verified that there is no need to change anything in code. Is there a way to get this module insmoded ***both*** in 2.6.23 and 2.6.25 kernels ? I saw something about "CONFIG_MODVERSIONS" but I do not know if this can be used to achieve my goal. Regards, Mark -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ