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1 # SPDX-License-Identifier: GPL-2.0
2
3 menu "Host processor type and features"
4
5 source "arch/x86/Kconfig.cpu"
6
7 endmenu
8
9 config UML_X86
10         def_bool y
11
12 config 64BIT
13         bool "64-bit kernel" if "$(SUBARCH)" = "x86"
14         default "$(SUBARCH)" != "i386"
15
16 config X86_32
17         def_bool !64BIT
18         select ARCH_32BIT_OFF_T
19         select ARCH_WANT_IPC_PARSE_VERSION
20         select MODULES_USE_ELF_REL
21         select CLONE_BACKWARDS
22         select OLD_SIGSUSPEND3
23         select OLD_SIGACTION
24
25 config X86_64
26         def_bool 64BIT
27         select MODULES_USE_ELF_RELA
28
29 config 3_LEVEL_PGTABLES
30         bool "Three-level pagetables" if !64BIT
31         default 64BIT
32         help
33         Three-level pagetables will let UML have more than 4G of physical
34         memory.  All the memory that can't be mapped directly will be treated
35         as high memory.
36
37         However, this it experimental on 32-bit architectures, so if unsure say
38         N (on x86-64 it's automatically enabled, instead, as it's safe there).
39
40 config ARCH_HAS_SC_SIGNALS
41         def_bool !64BIT
42
43 config ARCH_REUSE_HOST_VSYSCALL_AREA
44         def_bool !64BIT
45
46 config GENERIC_HWEIGHT
47         def_bool y
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