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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"
8
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
Al Viro4c3ff742012-02-11 06:15:50 -050018 bool "64-bit kernel" if SUBARCH = "x86"
19 default SUBARCH != "i386"
Al Viro41984262008-08-23 17:00:34 -040020
21config X86_32
22 def_bool !64BIT
23 select HAVE_AOUT
Richard Weinbergerbbb35ef2012-09-27 20:10:57 +020024 select ARCH_WANT_IPC_PARSE_VERSION
David Howells786d35d2012-09-28 14:31:03 +093025 select MODULES_USE_ELF_REL
Al Viro1d4b4b22012-10-22 22:34:11 -040026 select CLONE_BACKWARDS
Al Viro15ce1f72012-12-25 16:09:20 -050027 select OLD_SIGSUSPEND3
Al Viro5b3eb3a2012-12-25 19:14:55 -050028 select OLD_SIGACTION
Al Viro41984262008-08-23 17:00:34 -040029
Jan Beulichbfc390612011-03-01 11:14:55 +000030config X86_64
31 def_bool 64BIT
David Howells786d35d2012-09-28 14:31:03 +093032 select MODULES_USE_ELF_RELA
Jan Beulichbfc390612011-03-01 11:14:55 +000033
Ramkumar Ramachandrae40f04d2013-09-27 09:44:46 +053034config ARCH_DEFCONFIG
35 string
36 default "arch/um/configs/i386_defconfig" if X86_32
37 default "arch/um/configs/x86_64_defconfig" if X86_64
38
Al Viro41984262008-08-23 17:00:34 -040039config RWSEM_XCHGADD_ALGORITHM
H. Peter Anvin7ac468b2012-11-28 11:50:25 -080040 def_bool 64BIT
Al Viro41984262008-08-23 17:00:34 -040041
42config RWSEM_GENERIC_SPINLOCK
Richard Weinberger3a367902011-05-23 22:51:33 +020043 def_bool !RWSEM_XCHGADD_ALGORITHM
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Linus Torvalds1da177e2005-04-16 15:20:36 -070045config 3_LEVEL_PGTABLES
Kees Cook01b35ab2012-10-02 11:16:48 -070046 bool "Three-level pagetables" if !64BIT
Al Viro41984262008-08-23 17:00:34 -040047 default 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 help
49 Three-level pagetables will let UML have more than 4G of physical
50 memory. All the memory that can't be mapped directly will be treated
51 as high memory.
52
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080053 However, this it experimental on 32-bit architectures, so if unsure say
54 N (on x86-64 it's automatically enabled, instead, as it's safe there).
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056config ARCH_HAS_SC_SIGNALS
Al Viro41984262008-08-23 17:00:34 -040057 def_bool !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59config ARCH_REUSE_HOST_VSYSCALL_AREA
Al Viro41984262008-08-23 17:00:34 -040060 def_bool !64BIT
61
Akinobu Mitaf214ef32006-03-26 01:38:59 -080062config GENERIC_HWEIGHT
Al Viro41984262008-08-23 17:00:34 -040063 def_bool y
Al Viro61bee202008-08-25 04:51:27 -040064
65source "arch/um/Kconfig.um"
66
67endmenu
68
69source "arch/um/Kconfig.rest"