i think ulk2 is wrong. i think PAGE_OFFSET+1MB is more believeable. ming On Wednesday 04 June 2003 22:33, you wrote: > Hi, guys, > Understanding VM: > The first pointers to pg0 and pg1 are placed to cover the region 1-9MiB > and the second pointers to pg0 and pg1 are placed at PAGE_OFFSET+1MiB. > ULK2: > Therefore, the kernel must create a mapping from both the linear > addresses 0x00000000 through 0x007fffff and the linear addresses 0xc0000000 > through 0xc07fffff into the physical addresses 0x00000000 through > 0x007fffff. 一个说是1-9M, 一个说是0-8M, 谁是对的?昏...... > Best Regards > Ouyang Kai