Most of things are in place and we can enable support of 5-level paging. Things that known to be broken marked as BROKEN. Not-yet-Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> --- arch/x86/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index df4f1d514ab0..83a4c22111b3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -309,6 +309,7 @@ config DEBUG_RODATA config PGTABLE_LEVELS int + default 5 if X86_5LEVEL default 4 if X86_64 default 3 if X86_PAE default 2 @@ -1340,6 +1341,10 @@ 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 + config ARCH_PHYS_ADDR_T_64BIT def_bool y depends on X86_64 || X86_PAE @@ -1698,6 +1703,7 @@ config X86_SMAP config X86_INTEL_MPX prompt "Intel MPX (Memory Protection Extensions)" def_bool n + depends on !X86_5LEVEL depends on CPU_SUP_INTEL ---help--- MPX provides hardware features that can be used in -- 2.10.2 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>