1mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration" 2 3source "arch/um/Kconfig.common" 4 5menu "UML-specific options" 6 7menu "Host processor type and features" 8 9config CMPXCHG_LOCAL 10 bool 11 default n 12 13config CMPXCHG_DOUBLE 14 bool 15 default n 16 17source "arch/x86/Kconfig.cpu" 18 19endmenu 20 21config UML_X86 22 def_bool y 23 select GENERIC_FIND_FIRST_BIT 24 25config 64BIT 26 bool 27 default SUBARCH = "x86_64" 28 29config X86_32 30 def_bool !64BIT 31 select HAVE_AOUT 32 33config X86_64 34 def_bool 64BIT 35 36config RWSEM_XCHGADD_ALGORITHM 37 def_bool X86_XADD && 64BIT 38 39config RWSEM_GENERIC_SPINLOCK 40 def_bool !RWSEM_XCHGADD_ALGORITHM 41 42config 3_LEVEL_PGTABLES 43 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT 44 default 64BIT 45 depends on EXPERIMENTAL 46 help 47 Three-level pagetables will let UML have more than 4G of physical 48 memory. All the memory that can't be mapped directly will be treated 49 as high memory. 50 51 However, this it experimental on 32-bit architectures, so if unsure say 52 N (on x86-64 it's automatically enabled, instead, as it's safe there). 53 54config ARCH_HAS_SC_SIGNALS 55 def_bool !64BIT 56 57config ARCH_REUSE_HOST_VSYSCALL_AREA 58 def_bool !64BIT 59 60config GENERIC_HWEIGHT 61 def_bool y 62 63source "arch/um/Kconfig.um" 64 65endmenu 66 67source "arch/um/Kconfig.rest" 68