Kconfig.x86 1.1 KB

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  1. source "arch/um/Kconfig.common"
  2. menu "UML-specific options"
  3. menu "Host processor type and features"
  4. source "arch/x86/Kconfig.cpu"
  5. endmenu
  6. config UML_X86
  7. def_bool y
  8. select GENERIC_FIND_FIRST_BIT
  9. select GENERIC_FIND_NEXT_BIT
  10. config 64BIT
  11. bool
  12. default SUBARCH = "x86_64"
  13. config X86_32
  14. def_bool !64BIT
  15. select HAVE_AOUT
  16. config X86_64
  17. def_bool 64BIT
  18. config RWSEM_XCHGADD_ALGORITHM
  19. def_bool X86_XADD
  20. config RWSEM_GENERIC_SPINLOCK
  21. def_bool !X86_XADD
  22. config 3_LEVEL_PGTABLES
  23. bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
  24. default 64BIT
  25. depends on EXPERIMENTAL
  26. help
  27. Three-level pagetables will let UML have more than 4G of physical
  28. memory. All the memory that can't be mapped directly will be treated
  29. as high memory.
  30. However, this it experimental on 32-bit architectures, so if unsure say
  31. N (on x86-64 it's automatically enabled, instead, as it's safe there).
  32. config ARCH_HAS_SC_SIGNALS
  33. def_bool !64BIT
  34. config ARCH_REUSE_HOST_VSYSCALL_AREA
  35. def_bool !64BIT
  36. config SMP_BROKEN
  37. def_bool 64BIT
  38. config GENERIC_HWEIGHT
  39. def_bool y
  40. source "arch/um/Kconfig.um"
  41. endmenu
  42. source "arch/um/Kconfig.rest"