mm: page_alloc: do not treat a zone that cannot be used for dirty pages as "full"
[linux/fpc-iii.git] / arch / x86 / um / Kconfig
blobed56a1c4ae734d8fa2b3cb2ccd4133c2ebc4c5a8
1 mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
3 source "arch/um/Kconfig.common"
5 menu "UML-specific options"
7 menu "Host processor type and features"
9 source "arch/x86/Kconfig.cpu"
11 endmenu
13 config UML_X86
14         def_bool y
15         select GENERIC_FIND_FIRST_BIT
17 config 64BIT
18         bool "64-bit kernel" if SUBARCH = "x86"
19         default SUBARCH != "i386"
21 config X86_32
22         def_bool !64BIT
23         select HAVE_AOUT
24         select ARCH_WANT_IPC_PARSE_VERSION
25         select MODULES_USE_ELF_REL
26         select CLONE_BACKWARDS
27         select OLD_SIGSUSPEND3
28         select OLD_SIGACTION
30 config X86_64
31         def_bool 64BIT
32         select MODULES_USE_ELF_RELA
34 config 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
39 config RWSEM_XCHGADD_ALGORITHM
40         def_bool 64BIT
42 config RWSEM_GENERIC_SPINLOCK
43         def_bool !RWSEM_XCHGADD_ALGORITHM
45 config 3_LEVEL_PGTABLES
46         bool "Three-level pagetables" if !64BIT
47         default 64BIT
48         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.
53         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).
56 config ARCH_HAS_SC_SIGNALS
57         def_bool !64BIT
59 config ARCH_REUSE_HOST_VSYSCALL_AREA
60         def_bool !64BIT
62 config GENERIC_HWEIGHT
63         def_bool y
65 source "arch/um/Kconfig.um"
67 endmenu
69 source "arch/um/Kconfig.rest"