tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1source "arch/um/Kconfig.common"
2
3menu "UML-specific options"
4
5menu "Host processor type and features"
6
7source "arch/x86/Kconfig.cpu"
8
9endmenu
10
11config UML_X86
12 def_bool y
13 select GENERIC_FIND_FIRST_BIT
14 select GENERIC_FIND_NEXT_BIT
15
16config 64BIT
17 bool
18 default SUBARCH = "x86_64"
19
20config X86_32
21 def_bool !64BIT
22 select HAVE_AOUT
23
24config X86_64
25 def_bool 64BIT
26
27config RWSEM_XCHGADD_ALGORITHM
28 def_bool X86_XADD
29
30config RWSEM_GENERIC_SPINLOCK
31 def_bool !X86_XADD
32
33config 3_LEVEL_PGTABLES
34 bool "Three-level pagetables (EXPERIMENTAL)" if !64BIT
35 default 64BIT
36 depends on EXPERIMENTAL
37 help
38 Three-level pagetables will let UML have more than 4G of physical
39 memory. All the memory that can't be mapped directly will be treated
40 as high memory.
41
42 However, this it experimental on 32-bit architectures, so if unsure say
43 N (on x86-64 it's automatically enabled, instead, as it's safe there).
44
45config ARCH_HAS_SC_SIGNALS
46 def_bool !64BIT
47
48config ARCH_REUSE_HOST_VSYSCALL_AREA
49 def_bool !64BIT
50
51config SMP_BROKEN
52 def_bool 64BIT
53
54config GENERIC_HWEIGHT
55 def_bool y
56
57source "arch/um/Kconfig.um"
58
59endmenu
60
61source "arch/um/Kconfig.rest"