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* New static EFI runtime services virtual mapping layout which is

Browse source 
groundwork for kexec support on EFI - Borislav Petkov
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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi

Pull EFI virtual mapping changes from Matt Fleming:

  * New static EFI runtime services virtual mapping layout which is
    groundwork for kexec support on EFI. (Borislav Petkov)

Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Ingo Molnar 2013-11-26 12:23:04 +01:00
commit 61d0669775
10 changed files with 755 additions and 70 deletions
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7
Documentation/x86/x86_64/mm.txt
View file

@ -28,4 +28,11 @@ reference.
Current X86-64 implementations only support 40 bits of address space,
but we support up to 46 bits. This expands into MBZ space in the page tables.
->trampoline_pgd:
We map EFI runtime services in the aforementioned PGD in the virtual
range of 64Gb (arbitrarily set, can be raised if needed)
0xffffffef00000000 - 0xffffffff00000000
-Andi Kleen, Jul 2004