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 select GENERIC_SIGALTSTACK 17 18 config 64BIT 19 bool "64-bit kernel" if SUBARCH = "x86" 20 default SUBARCH != "i386" 21 22 config X86_32 23 def_bool !64BIT 24 select HAVE_AOUT 25 select ARCH_WANT_IPC_PARSE_VERSION 26 select MODULES_USE_ELF_REL 27 select CLONE_BACKWARDS 28 select OLD_SIGSUSPEND3 29 select OLD_SIGACTION 30 31 config X86_64 32 def_bool 64BIT 33 select MODULES_USE_ELF_RELA 34 35 config RWSEM_XCHGADD_ALGORITHM 36 def_bool 64BIT 37 38 config RWSEM_GENERIC_SPINLOCK 39 def_bool !RWSEM_XCHGADD_ALGORITHM 40 41 config 3_LEVEL_PGTABLES 42 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT 43 default 64BIT 44 depends on EXPERIMENTAL 45 help 46 Three-level pagetables will let UML have more than 4G of physical 47 memory. All the memory that can't be mapped directly will be treated 48 as high memory. 49 50 However, this it experimental on 32-bit architectures, so if unsure say 51 N (on x86-64 it's automatically enabled, instead, as it's safe there). 52 53 config ARCH_HAS_SC_SIGNALS 54 def_bool !64BIT 55 56 config ARCH_REUSE_HOST_VSYSCALL_AREA 57 def_bool !64BIT 58 59 config GENERIC_HWEIGHT 60 def_bool y 61 62 source "arch/um/Kconfig.um" 63 64 endmenu 65 66 source "arch/um/Kconfig.rest" 67