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Linux/arch/x86/um/Kconfig

  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 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 
 39 config RWSEM_XCHGADD_ALGORITHM
 40         def_bool 64BIT
 41 
 42 config RWSEM_GENERIC_SPINLOCK
 43         def_bool !RWSEM_XCHGADD_ALGORITHM
 44 
 45 config 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 
 56 config ARCH_HAS_SC_SIGNALS
 57         def_bool !64BIT
 58 
 59 config ARCH_REUSE_HOST_VSYSCALL_AREA
 60         def_bool !64BIT
 61 
 62 config GENERIC_HWEIGHT
 63         def_bool y
 64 
 65 source "arch/um/Kconfig.um"
 66 
 67 endmenu
 68 
 69 source "arch/um/Kconfig.rest"

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