FM / x86

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/arch/x86/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/arch/x86

Name	Size	Mode	Actions
boot/	-	0755	rm
coco/	-	0755	rm
crypto/	-	0755	rm
entry/	-	0755	rm
events/	-	0755	rm
hyperv/	-	0755	rm
ia32/	-	0755	rm
include/	-	0755	rm
kernel/	-	0755	rm
kvm/	-	0755	rm
lib/	-	0755	rm
math-emu/	-	0755	rm
mm/	-	0755	rm
net/	-	0755	rm
oprofile/	-	0755	rm
pci/	-	0755	rm
platform/	-	0755	rm
power/	-	0755	rm
purgatory/	-	0755	rm
ras/	-	0755	rm
realmode/	-	0755	rm
tools/	-	0755	rm
um/	-	0755	rm
video/	-	0755	rm
xen/	-	0755	rm
Kconfig	105616	0644	edit dl rm
Kconfig.cpu	15859	0644	edit dl rm
Kconfig.debug	12790	0644	edit dl rm
Makefile	13481	0644	edit dl rm
Makefile.um	1642	0644	edit dl rm
Makefile_32.cpu	2517	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/arch/x86/Makefile.um (1642B)

# SPDX-License-Identifier: GPL-2.0
core-y += arch/x86/crypto/

ifeq ($(CONFIG_X86_32),y)
START := 0x8048000

LDFLAGS			+= -m elf_i386
ELF_ARCH		:= i386
ELF_FORMAT 		:= elf32-i386
CHECKFLAGS	+= -D__i386__

KBUILD_CFLAGS		+= $(call cc-option,-m32)
KBUILD_AFLAGS		+= $(call cc-option,-m32)
LINK-y			+= $(call cc-option,-m32)

export LDFLAGS

LDS_EXTRA		:= -Ui386
export LDS_EXTRA

# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
include arch/x86/Makefile_32.cpu

# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)

# Prevent sprintf in nfsd from being converted to strcpy and resulting in
# an unresolved reference.
cflags-y += -ffreestanding

# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
# a lot more stack due to the lack of sharing of stacklots.  Also, gcc
# 4.3.0 needs -funit-at-a-time for extern inline functions.
KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \
			echo $(call cc-option,-fno-unit-at-a-time); \
			else echo $(call cc-option,-funit-at-a-time); fi ;)

KBUILD_CFLAGS += $(cflags-y)

else

START := 0x60000000

KBUILD_CFLAGS += -fno-builtin -m64

CHECKFLAGS  += -m64 -D__x86_64__
KBUILD_AFLAGS += -m64
LDFLAGS += -m elf_x86_64
KBUILD_CPPFLAGS += -m64

ELF_ARCH := i386:x86-64
ELF_FORMAT := elf64-x86-64

# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.

LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
LINK-y += -m64

# Do unit-at-a-time unconditionally on x86_64, following the host
KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
endif

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