On Mon, Aug 11, 2014 at 11:07:32PM -0700, Omkar Houddin wrote: > Hello Greg, > > I working on a char device driver. It is mostly based on the the scull device > driver in the LDD book. > It controls a HBA sitting on the PCIe BUS. What type of "Host Bus Adapter" needs to be a char driver? What userspace programs are talking to this device? Why do you need to be a kernel driver at all and not just a UIO userspace driver? Anyway, there's nothing "special" you need to do for x32 that you shouldn't have already done properly for your char interface to handle a mixture of 32/64bit kernel and userspace issues. So again, nothing should change, other than making sure you properly handle mixed user/kernel bit sizes properly. Do you have a pointer to your source code anywhere? thanks, greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
