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Geert Uytterhoeven7fa38e72011-07-25 17:12:48 -07001mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
2
Al Viro61bee202008-08-25 04:51:27 -04003source "arch/um/Kconfig.common"
4
5menu "UML-specific options"
6
Paolo 'Blaisorblade' Giarrusso85977372005-11-13 16:07:06 -08007menu "Host processor type and features"
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Al Viro7a78a172007-10-29 04:34:31 +00009source "arch/x86/Kconfig.cpu"
Paolo 'Blaisorblade' Giarrusso85977372005-11-13 16:07:06 -080010
11endmenu
12
Paolo 'Blaisorblade' Giarrussoc45166be32005-05-01 08:58:54 -070013config UML_X86
Jeff Dike54d67ee2007-12-01 12:16:28 -080014 def_bool y
Jan Beulichc49aa5b2011-03-08 09:24:26 +000015 select GENERIC_FIND_FIRST_BIT
Al Viro1f02ab42012-09-21 20:32:29 -040016 select GENERIC_KERNEL_THREAD
Jeff Dike54d67ee2007-12-01 12:16:28 -080017
Paolo 'Blaisorblade' Giarrussoc45166be32005-05-01 08:58:54 -070018config 64BIT
Al Viro4c3ff742012-02-11 06:15:50 -050019 bool "64-bit kernel" if SUBARCH = "x86"
20 default SUBARCH != "i386"
Al Viro41984262008-08-23 17:00:34 -040021
22config X86_32
23 def_bool !64BIT
24 select HAVE_AOUT
25
Jan Beulichbfc390612011-03-01 11:14:55 +000026config X86_64
27 def_bool 64BIT
28
Al Viro41984262008-08-23 17:00:34 -040029config RWSEM_XCHGADD_ALGORITHM
Richard Weinberger3a367902011-05-23 22:51:33 +020030 def_bool X86_XADD && 64BIT
Al Viro41984262008-08-23 17:00:34 -040031
32config RWSEM_GENERIC_SPINLOCK
Richard Weinberger3a367902011-05-23 22:51:33 +020033 def_bool !RWSEM_XCHGADD_ALGORITHM
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Linus Torvalds1da177e2005-04-16 15:20:36 -070035config 3_LEVEL_PGTABLES
Al Viro41984262008-08-23 17:00:34 -040036 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
37 default 64BIT
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080038 depends on EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 help
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
42 as high memory.
43
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080044 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).
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047config ARCH_HAS_SC_SIGNALS
Al Viro41984262008-08-23 17:00:34 -040048 def_bool !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
50config ARCH_REUSE_HOST_VSYSCALL_AREA
Al Viro41984262008-08-23 17:00:34 -040051 def_bool !64BIT
52
Akinobu Mitaf214ef32006-03-26 01:38:59 -080053config GENERIC_HWEIGHT
Al Viro41984262008-08-23 17:00:34 -040054 def_bool y
Al Viro61bee202008-08-25 04:51:27 -040055
56source "arch/um/Kconfig.um"
57
58endmenu
59
60source "arch/um/Kconfig.rest"