[Xen-devel] PAE guest address maps?

[Randy Thelen <rthelen@xxxxxxxxxx>]

Folks --

I'm looking through a PAE guest's address map and I'm trying to make  
sense out of it.  Is there some documentation about these address  
regions:
0xc0000000 - 0xc0800000: 8MB    x/8x 0xc0000000
0xfde00000 - 0xfde04000: 16KB   x/8x 0xfde00000
0xfdfac000 - 0xfdfae000: 8KB    NOT READABLE
0xfdfb4000 - 0xfdfc0000: 48KB   NOT READABLE
0xfdfe4000 - 0xfdfe6000: 8KB    NOT READABLE
0xfdfec000 - 0xfdff0000: 16KB   x/8x 0xfdfec000
0xfdff4000 - 0xfe000000: 48KB   NOT READABLE

Is the above map documented in the general case somewhere?

And, where are they setup?  Inside Xen?  Inside Xend?  And, in what  
files?
It looks like Xen builds a (set of) self referential page table  
pointers (i.e., page table entries that are pointers to the page  
table itself.  Where is that documented?
Last, where's the mfn to pfn array?

-- Randy

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