Any docments analyzing linuxppc kernel and it's policy?

[Gong Zhuo]

Hi:
  I am reading the source code of linuxppc mm.  It seems that the process
uses the logical address 0 - 0x7fffffff, and the kernel uses the logical
address 0xc0000000 -- (0xc0000000 + maxium memory). The rest logical address
will not be used by anyone. Am I right?
  Is there any document analyzing the linuxppc kernel and how does the
kernel arrange all the logical space ?


Thanks
Gong Zhuo


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