1mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration" 2 3source "arch/um/Kconfig.common" 4 5menu "UML-specific options" 6 7menu "Host processor type and features" 8 9source "arch/x86/Kconfig.cpu" 10 11endmenu 12 13config UML_X86 14 def_bool y 15 select GENERIC_FIND_FIRST_BIT 16 17config 64BIT 18 bool "64-bit kernel" if SUBARCH = "x86" 19 default SUBARCH != "i386" 20 21config X86_32 22 def_bool !64BIT 23 select HAVE_AOUT 24 select ARCH_WANT_IPC_PARSE_VERSION 25 select MODULES_USE_ELF_REL 26 select CLONE_BACKWARDS 27 28config X86_64 29 def_bool 64BIT 30 select MODULES_USE_ELF_RELA 31 32config RWSEM_XCHGADD_ALGORITHM 33 def_bool X86_XADD && 64BIT 34 35config RWSEM_GENERIC_SPINLOCK 36 def_bool !RWSEM_XCHGADD_ALGORITHM 37 38config 3_LEVEL_PGTABLES 39 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT 40 default 64BIT 41 depends on EXPERIMENTAL 42 help 43 Three-level pagetables will let UML have more than 4G of physical 44 memory. All the memory that can't be mapped directly will be treated 45 as high memory. 46 47 However, this it experimental on 32-bit architectures, so if unsure say 48 N (on x86-64 it's automatically enabled, instead, as it's safe there). 49 50config ARCH_HAS_SC_SIGNALS 51 def_bool !64BIT 52 53config ARCH_REUSE_HOST_VSYSCALL_AREA 54 def_bool !64BIT 55 56config GENERIC_HWEIGHT 57 def_bool y 58 59source "arch/um/Kconfig.um" 60 61endmenu 62 63source "arch/um/Kconfig.rest" 64