source "arch/um/Kconfig.common" menu "UML-specific options" menu "Host processor type and features" config CMPXCHG_LOCAL bool default n source "arch/x86/Kconfig.cpu" endmenu config UML_X86 def_bool y select GENERIC_FIND_FIRST_BIT select GENERIC_FIND_NEXT_BIT config 64BIT bool default SUBARCH = "x86_64" config X86_32 def_bool !64BIT select HAVE_AOUT config X86_64 def_bool 64BIT config RWSEM_XCHGADD_ALGORITHM def_bool X86_XADD && 64BIT config RWSEM_GENERIC_SPINLOCK def_bool !RWSEM_XCHGADD_ALGORITHM config 3_LEVEL_PGTABLES bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT default 64BIT depends on EXPERIMENTAL help Three-level pagetables will let UML have more than 4G of physical memory. All the memory that can't be mapped directly will be treated as high memory. However, this it experimental on 32-bit architectures, so if unsure say N (on x86-64 it's automatically enabled, instead, as it's safe there). config ARCH_HAS_SC_SIGNALS def_bool !64BIT config ARCH_REUSE_HOST_VSYSCALL_AREA def_bool !64BIT config SMP_BROKEN def_bool 64BIT config GENERIC_HWEIGHT def_bool y source "arch/um/Kconfig.um" endmenu source "arch/um/Kconfig.rest"