[PATCH v9 0/5] x86/KASLR: Randomize virtual address separately

[Kees Cook]

This is v9 of the remaining patches needed to support separate phys/virt
KASLR of the text base address. The rest of the series has landed in -tip.

The patches are:
- 1: Best-effort data relocation detection for the build.
- 2: Further clean up on pagetable.c.
- 3: Last part of Baoquan's decoupling the physical address and virtual
     address randomization of kernel text.
- 4: Remove upper bound on physical address range.
- 5: Remove lower bound on physical address range.

Thanks!

-Kees

v9:
- added data relocation detection

v8:
- extracted identity map initialization function to be part of the
  called interface, renamed appropriately to initialize_identity_maps().
- added copyright to pagetable.c for clarity.
- shuffled initialization of mapping_info around again for good measure.
- refactored remaining patches to include call to initialize_identity_maps().