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Merge branch 'x86/urgent' into x86/asm, to fix semantic conflict

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'cpu_has_pse' has changed to boot_cpu_has(X86_FEATURE_PSE), fix this
up in the merge commit when merging the x86/urgent tree that includes
the following commit:

  103f6112f2 ("x86/mm/xen: Suppress hugetlbfs in PV guests")

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2016-04-22 10:12:19 +02:00
parent abfb9498ee ea5dfb5fae
commit b2eafe890d
4 changed files with 42 additions and 7 deletions
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6
Documentation/x86/x86_64/mm.txt
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@@ -19,7 +19,7 @@ ffffff0000000000 - ffffff7fffffffff (=39 bits) %esp fixup stacks
ffffffef00000000 - ffffffff00000000 (=64 GB) EFI region mapping space
... unused hole ...
ffffffff80000000 - ffffffffa0000000 (=512 MB) kernel text mapping, from phys 0
ffffffffa0000000 - ffffffffff5fffff (=1525 MB) module mapping space
ffffffffa0000000 - ffffffffff5fffff (=1526 MB) module mapping space
ffffffffff600000 - ffffffffffdfffff (=8 MB) vsyscalls
ffffffffffe00000 - ffffffffffffffff (=2 MB) unused hole
@@ -31,8 +31,8 @@ vmalloc space is lazily synchronized into the different PML4 pages of
the processes using the page fault handler, with init_level4_pgt as
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.
Current X86-64 implementations support up to 46 bits of address space (64 TB),
which is our current limit. This expands into MBZ space in the page tables.
We map EFI runtime services in the 'efi_pgd' PGD in a 64Gb large virtual
memory window (this size is arbitrary, it can be raised later if needed).