50 lines
1.1 KiB
Plaintext
50 lines
1.1 KiB
Plaintext
# 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 ARCH_BINFMT_ELF_EXTRA_PHDRS if X86_32
|
|
select DCACHE_WORD_ACCESS
|
|
|
|
config 64BIT
|
|
bool "64-bit kernel" if "$(SUBARCH)" = "x86"
|
|
default "$(SUBARCH)" != "i386"
|
|
|
|
config X86_32
|
|
def_bool !64BIT
|
|
select ARCH_32BIT_OFF_T
|
|
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 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
|