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- # SPDX-License-Identifier: GPL-2.0
- menu "Host processor type and features"
- source "arch/x86/Kconfig.cpu"
- endmenu
- config UML_X86
- def_bool y
- select GENERIC_FIND_FIRST_BIT
- config 64BIT
- bool "64-bit kernel" if "$(SUBARCH)" = "x86"
- default "$(SUBARCH)" != "i386"
- config X86_32
- def_bool !64BIT
- select HAVE_AOUT
- select ARCH_WANT_IPC_PARSE_VERSION
- select MODULES_USE_ELF_REL
- select CLONE_BACKWARDS
- select OLD_SIGSUSPEND3
- select OLD_SIGACTION
- config X86_64
- def_bool 64BIT
- select MODULES_USE_ELF_RELA
- config ARCH_DEFCONFIG
- string
- default "arch/um/configs/i386_defconfig" if X86_32
- default "arch/um/configs/x86_64_defconfig" if X86_64
- config RWSEM_XCHGADD_ALGORITHM
- def_bool 64BIT
- config RWSEM_GENERIC_SPINLOCK
- def_bool !RWSEM_XCHGADD_ALGORITHM
- config 3_LEVEL_PGTABLES
- bool "Three-level pagetables" if !64BIT
- default 64BIT
- help
- Three-level pagetables will let UML have more than 4G of physical
- memory. All the memory that can't be mapped directly will be treated
- as high memory.
- However, this it experimental on 32-bit architectures, so if unsure say
- N (on x86-64 it's automatically enabled, instead, as it's safe there).
- config ARCH_HAS_SC_SIGNALS
- def_bool !64BIT
- config ARCH_REUSE_HOST_VSYSCALL_AREA
- def_bool !64BIT
- config GENERIC_HWEIGHT
- def_bool y
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