arch/um/Kconfig.x86

   1 source "arch/um/Kconfig.common"
   2
   3 menu "UML-specific options"
   4
   5 menu "Host processor type and features"
   6
   7 source "arch/x86/Kconfig.cpu"
   8
   9 endmenu
  10
  11 config UML_X86
  12         def_bool y
  13
  14 config 64BIT
  15         bool
  16         default SUBARCH = "x86_64"
  17
  18 config X86_32
  19         def_bool !64BIT
  20         select HAVE_AOUT
  21
  22 config RWSEM_XCHGADD_ALGORITHM
  23         def_bool X86_XADD
  24
  25 config RWSEM_GENERIC_SPINLOCK
  26         def_bool !X86_XADD
  27
  28 config 3_LEVEL_PGTABLES
  29         bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
  30         default 64BIT
  31         depends on EXPERIMENTAL
  32         help
  33         Three-level pagetables will let UML have more than 4G of physical
  34         memory.  All the memory that can't be mapped directly will be treated
  35         as high memory.
  36
  37         However, this it experimental on 32-bit architectures, so if unsure say
  38         N (on x86-64 it's automatically enabled, instead, as it's safe there).
  39
  40 config ARCH_HAS_SC_SIGNALS
  41         def_bool !64BIT
  42
  43 config ARCH_REUSE_HOST_VSYSCALL_AREA
  44         def_bool !64BIT
  45
  46 config SMP_BROKEN
  47         def_bool 64BIT
  48
  49 config GENERIC_HWEIGHT
  50         def_bool y
  51
  52 source "arch/um/Kconfig.um"
  53
  54 endmenu
  55
  56 source "arch/um/Kconfig.rest"