diff options
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8328bcb9ce8b..ff637dedfafa 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -326,6 +326,7 @@ config FIX_EARLYCON_MEM config PGTABLE_LEVELS int + default 5 if X86_5LEVEL default 4 if X86_64 default 3 if X86_PAE default 2 @@ -1398,6 +1399,24 @@ config X86_PAE has the cost of more pagetable lookup overhead, and also consumes more pagetable space per process. +config X86_5LEVEL + bool "Enable 5-level page tables support" + depends on X86_64 + ---help--- + 5-level paging enables access to larger address space: + upto 128 PiB of virtual address space and 4 PiB of + physical address space. + + It will be supported by future Intel CPUs. + + Note: a kernel with this option enabled can only be booted + on machines that support the feature. + + See Documentation/x86/x86_64/5level-paging.txt for more + information. + + Say N if unsure. + config ARCH_PHYS_ADDR_T_64BIT def_bool y depends on X86_64 || X86_PAE |