1 mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration" 2 3 source "arch/um/Kconfig.common" 4 5 menu "UML-specific options" 6 7 menu "Host processor type and features" 8 9 source "arch/x86/Kconfig.cpu" 10 11 endmenu 12 13 config UML_X86 14 def_bool y 15 select GENERIC_FIND_FIRST_BIT 16 17 config 64BIT 18 bool "64-bit kernel" if SUBARCH = "x86" 19 default SUBARCH != "i386" 20 21 config 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 30 config X86_64 31 def_bool 64BIT 32 select MODULES_USE_ELF_RELA 33 34 config RWSEM_XCHGADD_ALGORITHM 35 def_bool 64BIT 36 37 config RWSEM_GENERIC_SPINLOCK 38 def_bool !RWSEM_XCHGADD_ALGORITHM 39 40 config 3_LEVEL_PGTABLES 41 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT 42 default 64BIT 43 depends on EXPERIMENTAL 44 help 45 Three-level pagetables will let UML have more than 4G of physical 46 memory. All the memory that can't be mapped directly will be treated 47 as high memory. 48 49 However, this it experimental on 32-bit architectures, so if unsure say 50 N (on x86-64 it's automatically enabled, instead, as it's safe there). 51 52 config ARCH_HAS_SC_SIGNALS 53 def_bool !64BIT 54 55 config ARCH_REUSE_HOST_VSYSCALL_AREA 56 def_bool !64BIT 57 58 config GENERIC_HWEIGHT 59 def_bool y 60 61 source "arch/um/Kconfig.um" 62 63 endmenu 64 65 source "arch/um/Kconfig.rest" 66