1 # SPDX-License-Identifier: GPL-2.0
3 menu "Host processor type and features"
5 source "arch/x86/Kconfig.cpu"
13 bool "64-bit kernel" if "$(SUBARCH)" = "x86"
14 default "$(SUBARCH)" != "i386"
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
27 select MODULES_USE_ELF_RELA
29 config 3_LEVEL_PGTABLES
30 bool "Three-level pagetables" if !64BIT
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
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).
40 config ARCH_HAS_SC_SIGNALS
43 config ARCH_REUSE_HOST_VSYSCALL_AREA
46 config GENERIC_HWEIGHT