March 7, 2013
5:34 a.m.
On Thu, 07 Mar 2013 12:48:06 +0800, ishare said:
because all the pde (0-768) are set to 0x0 ,so no phsical pages are mapping to these pde . isn't it?
The pdes don't end at 768. Think about what pde numbers the kernel gets when it loads at 0xc0000000 (which is where it lands with the default 3G/1G split).