Since some of you asked me how I did it. - This is extremely simple - My changes work on PPC - May also work on some of i386, on which BIOS does not zero out memory at reboot time - I used boot time allocation api, there are four of them, pick up any one which fits you need - I added one line to init/main.c, in the strat_kernel function, after setup_arch call, this call allocates memory and pass me pointer. I save this pointer in the global variable, which my module latter picks up (& provide memory mapping to apps). This pointer variable name is exported so module can see/link to it. - This call can be made from staticly linked driver (what I have read, but not tried) - I used alloc_bootmem api, only problem is that alloc_bootmem before returning zero out allocated memory. I changed to not to zero out in case of my call, but otherwise do it. Hopefully I explained it clearly. Usman ===== Usman S. Ansari Linux OS & Device Drivers __________________________________________________ Do You Yahoo!? Yahoo! Health - your guide to health and wellness http://health.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
