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 25 config X86_64 26 def_bool 64BIT 27 28 config RWSEM_XCHGADD_ALGORITHM 29 def_bool X86_XADD && 64BIT 30 31 config RWSEM_GENERIC_SPINLOCK 32 def_bool !RWSEM_XCHGADD_ALGORITHM 33 34 config 3_LEVEL_PGTABLES 35 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT 36 default 64BIT 37 depends on EXPERIMENTAL 38 help 39 Three-level pagetables will let UML have more than 4G of physical 40 memory. All the memory that can't be mapped directly will be treated 41 as high memory. 42 43 However, this it experimental on 32-bit architectures, so if unsure say 44 N (on x86-64 it's automatically enabled, instead, as it's safe there). 45 46 config ARCH_HAS_SC_SIGNALS 47 def_bool !64BIT 48 49 config ARCH_REUSE_HOST_VSYSCALL_AREA 50 def_bool !64BIT 51 52 config GENERIC_HWEIGHT 53 def_bool y 54 55 source "arch/um/Kconfig.um" 56 57 endmenu 58 59 source "arch/um/Kconfig.rest" 60