blob: 8aae429a56e2d34690c24253fb1c3825fe1cf52a [file] [log] [blame]
Al Viro61bee202008-08-25 04:51:27 -04001source "arch/um/Kconfig.common"
2
3menu "UML-specific options"
4
Paolo 'Blaisorblade' Giarrusso85977372005-11-13 16:07:06 -08005menu "Host processor type and features"
6
Richard Weinberger084189a2011-04-14 15:22:18 -07007config CMPXCHG_LOCAL
8 bool
9 default n
10
Al Viro7a78a172007-10-29 04:34:31 +000011source "arch/x86/Kconfig.cpu"
Paolo 'Blaisorblade' Giarrusso85977372005-11-13 16:07:06 -080012
13endmenu
14
Paolo 'Blaisorblade' Giarrussoc45166be32005-05-01 08:58:54 -070015config UML_X86
Jeff Dike54d67ee2007-12-01 12:16:28 -080016 def_bool y
Jan Beulichc49aa5b2011-03-08 09:24:26 +000017 select GENERIC_FIND_FIRST_BIT
Jeff Dike54d67ee2007-12-01 12:16:28 -080018
Paolo 'Blaisorblade' Giarrussoc45166be32005-05-01 08:58:54 -070019config 64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 bool
Al Viro41984262008-08-23 17:00:34 -040021 default SUBARCH = "x86_64"
22
23config X86_32
24 def_bool !64BIT
25 select HAVE_AOUT
26
Jan Beulichbfc390612011-03-01 11:14:55 +000027config X86_64
28 def_bool 64BIT
29
Al Viro41984262008-08-23 17:00:34 -040030config RWSEM_XCHGADD_ALGORITHM
Richard Weinberger3a367902011-05-23 22:51:33 +020031 def_bool X86_XADD && 64BIT
Al Viro41984262008-08-23 17:00:34 -040032
33config RWSEM_GENERIC_SPINLOCK
Richard Weinberger3a367902011-05-23 22:51:33 +020034 def_bool !RWSEM_XCHGADD_ALGORITHM
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Linus Torvalds1da177e2005-04-16 15:20:36 -070036config 3_LEVEL_PGTABLES
Al Viro41984262008-08-23 17:00:34 -040037 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
38 default 64BIT
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080039 depends on EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 help
41 Three-level pagetables will let UML have more than 4G of physical
42 memory. All the memory that can't be mapped directly will be treated
43 as high memory.
44
Paolo 'Blaisorblade' Giarrussoce2d2ae2006-01-18 17:42:59 -080045 However, this it experimental on 32-bit architectures, so if unsure say
46 N (on x86-64 it's automatically enabled, instead, as it's safe there).
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048config ARCH_HAS_SC_SIGNALS
Al Viro41984262008-08-23 17:00:34 -040049 def_bool !64BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51config ARCH_REUSE_HOST_VSYSCALL_AREA
Al Viro41984262008-08-23 17:00:34 -040052 def_bool !64BIT
53
54config SMP_BROKEN
55 def_bool 64BIT
Akinobu Mitaf214ef32006-03-26 01:38:59 -080056
57config GENERIC_HWEIGHT
Al Viro41984262008-08-23 17:00:34 -040058 def_bool y
Al Viro61bee202008-08-25 04:51:27 -040059
60source "arch/um/Kconfig.um"
61
62endmenu
63
64source "arch/um/Kconfig.rest"