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-rw-r--r--arch/x86/um/Kconfig67
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diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
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+mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
+
+source "arch/um/Kconfig.common"
+
+menu "UML-specific options"
+
+menu "Host processor type and features"
+
+config CMPXCHG_LOCAL
+ bool
+ default n
+
+config CMPXCHG_DOUBLE
+ bool
+ default n
+
+source "arch/x86/Kconfig.cpu"
+
+endmenu
+
+config UML_X86
+ def_bool y
+ select GENERIC_FIND_FIRST_BIT
+
+config 64BIT
+ bool
+ default SUBARCH = "x86_64"
+
+config X86_32
+ def_bool !64BIT
+ select HAVE_AOUT
+
+config X86_64
+ def_bool 64BIT
+
+config RWSEM_XCHGADD_ALGORITHM
+ def_bool X86_XADD && 64BIT
+
+config RWSEM_GENERIC_SPINLOCK
+ def_bool !RWSEM_XCHGADD_ALGORITHM
+
+config 3_LEVEL_PGTABLES
+ bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
+ default 64BIT
+ depends on EXPERIMENTAL
+ help
+ Three-level pagetables will let UML have more than 4G of physical
+ memory. All the memory that can't be mapped directly will be treated
+ as high memory.
+
+ However, this it experimental on 32-bit architectures, so if unsure say
+ N (on x86-64 it's automatically enabled, instead, as it's safe there).
+
+config ARCH_HAS_SC_SIGNALS
+ def_bool !64BIT
+
+config ARCH_REUSE_HOST_VSYSCALL_AREA
+ def_bool !64BIT
+
+config GENERIC_HWEIGHT
+ def_bool y
+
+source "arch/um/Kconfig.um"
+
+endmenu
+
+source "arch/um/Kconfig.rest"