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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
Jeff Dike54d67ee2007-12-01 12:16:28 -080016
Paolo 'Blaisorblade' Giarrussoc45166be32005-05-01 08:58:54 -070017config 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 bool
Al Viro41984262008-08-23 17:00:34 -040019 default SUBARCH = "x86_64"
20
21config X86_32
22 def_bool !64BIT
23 select HAVE_AOUT
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Jan Beulichbfc390612011-03-01 11:14:55 +000025config X86_64
26 def_bool 64BIT
27
Al Viro41984262008-08-23 17:00:34 -040028config RWSEM_XCHGADD_ALGORITHM
Richard Weinberger3a367902011-05-23 22:51:33 +020029 def_bool X86_XADD && 64BIT
Al Viro41984262008-08-23 17:00:34 -040030
31config RWSEM_GENERIC_SPINLOCK
Richard Weinberger3a367902011-05-23 22:51:33 +020032 def_bool !RWSEM_XCHGADD_ALGORITHM
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
Linus Torvalds1da177e2005-04-16 15:20:36 -070034config 3_LEVEL_PGTABLES
Al Viro41984262008-08-23 17:00:34 -040035 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
36 default 64BIT
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080037 depends on EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 help
39 Three-level pagetables will let UML have more than 4G of physical
40 memory. All the memory that can't be mapped directly will be treated
41 as high memory.
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Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080043 However, this it experimental on 32-bit architectures, so if unsure say
44 N (on x86-64 it's automatically enabled, instead, as it's safe there).
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046config ARCH_HAS_SC_SIGNALS
Al Viro41984262008-08-23 17:00:34 -040047 def_bool !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49config ARCH_REUSE_HOST_VSYSCALL_AREA
Al Viro41984262008-08-23 17:00:34 -040050 def_bool !64BIT
51
Akinobu Mitaf214ef32006-03-26 01:38:59 -080052config GENERIC_HWEIGHT
Al Viro41984262008-08-23 17:00:34 -040053 def_bool y
Al Viro61bee202008-08-25 04:51:27 -040054
55source "arch/um/Kconfig.um"
56
57endmenu
58
59source "arch/um/Kconfig.rest"