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37.3. A warning message is displayed while installing the para-virtualized drivers on Red Hat Enterprise Linux 3
Installing the para-virtualized drivers on a Red Hat Enterprise Linux 3 kernel prior to 2.4.21-52 may result in a warning message being displayed stating the modules have been compiled with a newer version than the running kernel.
This message, as seen below, can be safely ignored.
Warning: kernel-module version mismatch xen-platform-pci.o was compiled for kernel version 2.4.21-52.EL while this kernel is version 2.4.21-50.EL Warning: loading xen-platform-pci.o will taint the kernel: forced load See http://www.tux.org/lkml/#export-tainted for information about tainted modules Module xen-platform-pci loaded, with warnings
The important part of the message above is the last line which should state the module has been loaded with warnings.