/*
* IBM messed up *AGAIN* in their thinkpad: 0xA0000 -> 0x9F000.
* They seem to have done something stupid with the floppy
* controller as well..
*/
while (start_low_mem < 0x9f000) {
clear_bit(PG_reserved, &mem_map[MAP_NR(start_low_mem)].flags);
start_low_mem += PAGE_SIZE;
}
1.3.100
IBM messed up *AGAIN* in their thinkpad: 0xA0000 -> 0x9F000
原文：http://www.cnblogs.com/mull/p/7997670.html