1 mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
3 source "arch/um/Kconfig.common"
5 menu "UML-specific options"
7 menu "Host processor type and features"
9 source "arch/x86/Kconfig.cpu"
15 select GENERIC_FIND_FIRST_BIT
18 bool "64-bit kernel" if SUBARCH = "x86"
19 default SUBARCH != "i386"
24 select ARCH_WANT_IPC_PARSE_VERSION
29 config RWSEM_XCHGADD_ALGORITHM
30 def_bool X86_XADD && 64BIT
32 config RWSEM_GENERIC_SPINLOCK
33 def_bool !RWSEM_XCHGADD_ALGORITHM
35 config 3_LEVEL_PGTABLES
36 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
38 depends on EXPERIMENTAL
40 Three-level pagetables will let UML have more than 4G of physical
41 memory. All the memory that can't be mapped directly will be treated
44 However, this it experimental on 32-bit architectures, so if unsure say
45 N (on x86-64 it's automatically enabled, instead, as it's safe there).
47 config ARCH_HAS_SC_SIGNALS
50 config ARCH_REUSE_HOST_VSYSCALL_AREA
53 config GENERIC_HWEIGHT
56 source "arch/um/Kconfig.um"
60 source "arch/um/Kconfig.rest"