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 select OLD_SIGSUSPEND3 28 select OLD_SIGACTION 29 30config X86_64 31 def_bool 64BIT 32 select MODULES_USE_ELF_RELA 33 34config ARCH_DEFCONFIG 35 string 36 default "arch/um/configs/i386_defconfig" if X86_32 37 default "arch/um/configs/x86_64_defconfig" if X86_64 38 39config RWSEM_XCHGADD_ALGORITHM 40 def_bool 64BIT 41 42config RWSEM_GENERIC_SPINLOCK 43 def_bool !RWSEM_XCHGADD_ALGORITHM 44 45config 3_LEVEL_PGTABLES 46 bool "Three-level pagetables" if !64BIT 47 default 64BIT 48 help 49 Three-level pagetables will let UML have more than 4G of physical 50 memory. All the memory that can't be mapped directly will be treated 51 as high memory. 52 53 However, this it experimental on 32-bit architectures, so if unsure say 54 N (on x86-64 it's automatically enabled, instead, as it's safe there). 55 56config ARCH_HAS_SC_SIGNALS 57 def_bool !64BIT 58 59config ARCH_REUSE_HOST_VSYSCALL_AREA 60 def_bool !64BIT 61 62config GENERIC_HWEIGHT 63 def_bool y 64 65source "arch/um/Kconfig.um" 66 67endmenu 68 69source "arch/um/Kconfig.rest" 70