Dear All, I need to allocate a variable in a known physical location, let's say I need to allocate void *p in location 0x10001000. I was using mmap to to do this, but in that manner I can only allocate p[0], p[1]...p[n] in that physical address range. Therefore when I access p[i], accesses to p results in outside {0x10001000, 0x10001000+offset} and p[i] results as an access in the range I am interested in. I was wondering is there a was for me to force to allocate variable p in that address range or I am looking for something totally unrealistic. Because of the nature of my research I can use any optimization(-O2, O3). Any help/advice is greatly appreciated. regards, Isuru