On Fri, Oct 05, 2001 at 12:57:31PM +0530, C.Mohanasundaram wrote: > I read some where that the kernel modules > and drivers should be 64 bit clean. > what does it mean. That the module should run on a 64 bit platform without any kind of modifications. 64 bit Linux platforms include: Alpha, Sparc64, Mips64, PowerPC64, and x86-64. We have learned from the past, where drivers assumed that all the world was a PC. Because of this quite some drivers assumed (and some still assume) that the IO port range is from 0x0000 to 0x1000 (the serial port on my StrongARM lives at 0x90004000), and interrupt 0 means uninitialised (perfectly valid interrupt on my StrongARM). Erik -- J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department of Electrical Engineering, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl WWW: http://www-ict.its.tudelft.nl/~erik/ - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
