arch/x86_64/Kconfig - third_party/linux - Git at Google


            
            #

            
            # For a description of the syntax of this configuration file,

            
            # see Documentation/kbuild/kconfig-language.txt.

            
            #

            
            # Note: ISA is disabled and will hopefully never be enabled.

            
            # If you managed to buy an ISA x86-64 box you'll have to fix all the

            
            # ISA drivers you need yourself.

            
            #


            mainmenu "Linux Kernel Configuration"


            config X86_64

            
            	bool

            
            	default y

            
            	help

            
            	  Port to the x86-64 architecture. x86-64 is a 64-bit extension to the

            
            	  classical 32-bit x86 architecture. For details see

            
            	  <http://www.x86-64.org/>.


            config 64BIT

            
            	def_bool y


            config X86

            
            	bool

            
            	default y


            config MMU

            
            	bool

            
            	default y


            config ISA

            
            	bool


            config SBUS

            
            	bool


            config RWSEM_GENERIC_SPINLOCK

            
            	bool

            
            	default y


            config RWSEM_XCHGADD_ALGORITHM

            
            	bool


            config GENERIC_CALIBRATE_DELAY

            
            	bool

            
            	default y


            config X86_CMPXCHG

            
            	bool

            
            	default y


            config EARLY_PRINTK

            
            	bool

            
            	default y


            config HPET_TIMER

            
            	bool

            
            	default y

            
            	help

            
            	  Use the IA-PC HPET (High Precision Event Timer) to manage

            
            	  time in preference to the PIT and RTC, if a HPET is

            
            	  present.  The HPET provides a stable time base on SMP

            
            	  systems, unlike the RTC, but it is more expensive to access,

            
            	  as it is off-chip.  You can find the HPET spec at

            
            	  <http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.


            	  If unsure, say Y.


            config HPET_EMULATE_RTC

            
            	bool "Provide RTC interrupt"

            
            	depends on HPET_TIMER && RTC=y


            config GENERIC_ISA_DMA

            
            	bool

            
            	default y


            config GENERIC_IOMAP

            
            	bool

            
            	default y


            source "init/Kconfig"


            menu "Processor type and features"


            choice

            
            	prompt "Processor family"

            
            	default MK8


            config MK8

            
            	bool "AMD-Opteron/Athlon64"

            
            	help

            
            	  Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.


            config MPSC

            
                   bool "Intel EM64T"

            
                   help

            
            	  Optimize for Intel Pentium 4 and Xeon CPUs with Intel

            
            	  Extended Memory 64 Technology(EM64T). For details see

            
            	  <http://www.intel.com/technology/64bitextensions/>.


            config GENERIC_CPU

            
            	bool "Generic-x86-64"

            
            	help

            
            	  Generic x86-64 CPU.


            endchoice


            #

            
            # Define implied options from the CPU selection here

            
            #

            
            config X86_L1_CACHE_BYTES

            
            	int

            
            	default "128" if GENERIC_CPU || MPSC

            
            	default "64" if MK8


            config X86_L1_CACHE_SHIFT

            
            	int

            
            	default "7" if GENERIC_CPU || MPSC

            
            	default "6" if MK8


            config X86_TSC

            
            	bool

            
            	default y


            config X86_GOOD_APIC

            
            	bool

            
            	default y


            config MICROCODE

            
            	tristate "/dev/cpu/microcode - Intel CPU microcode support"

            
            	---help---

            
            	  If you say Y here the 'File systems' section, you will be

            
            	  able to update the microcode on Intel processors. You will

            
            	  obviously need the actual microcode binary data itself which is

            
            	  not shipped with the Linux kernel.


            	  For latest news and information on obtaining all the required

            
            	  ingredients for this driver, check:

            
            	  <http://www.urbanmyth.org/microcode/>.


            	  To compile this driver as a module, choose M here: the

            
            	  module will be called microcode.

            
            	  If you use modprobe or kmod you may also want to add the line

            
            	  'alias char-major-10-184 microcode' to your /etc/modules.conf file.


            config X86_MSR

            
            	tristate "/dev/cpu/*/msr - Model-specific register support"

            
            	help

            
            	  This device gives privileged processes access to the x86

            
            	  Model-Specific Registers (MSRs).  It is a character device with

            
            	  major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.

            
            	  MSR accesses are directed to a specific CPU on multi-processor

            
            	  systems.


            config X86_CPUID

            
            	tristate "/dev/cpu/*/cpuid - CPU information support"

            
            	help

            
            	  This device gives processes access to the x86 CPUID instruction to

            
            	  be executed on a specific processor.  It is a character device

            
            	  with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to

            
            	  /dev/cpu/31/cpuid.


            # disable it for opteron optimized builds because it pulls in ACPI_BOOT

            
            config X86_HT

            
            	bool

            
            	depends on SMP && !MK8

            
            	default y


            config MATH_EMULATION

            
            	bool


            config MCA

            
            	bool


            config EISA

            
            	bool


            config X86_IO_APIC

            
            	bool

            
            	default y


            config X86_LOCAL_APIC

            
            	bool

            
            	default y


            config MTRR

            
            	bool "MTRR (Memory Type Range Register) support"

            
            	---help---

            
            	  On Intel P6 family processors (Pentium Pro, Pentium II and later)

            
            	  the Memory Type Range Registers (MTRRs) may be used to control

            
            	  processor access to memory ranges. This is most useful if you have

            
            	  a video (VGA) card on a PCI or AGP bus. Enabling write-combining

            
            	  allows bus write transfers to be combined into a larger transfer

            
            	  before bursting over the PCI/AGP bus. This can increase performance

            
            	  of image write operations 2.5 times or more. Saying Y here creates a

            
            	  /proc/mtrr file which may be used to manipulate your processor's

            
            	  MTRRs. Typically the X server should use this.


            	  This code has a reasonably generic interface so that similar

            
            	  control registers on other processors can be easily supported

            
            	  as well.


            	  Saying Y here also fixes a problem with buggy SMP BIOSes which only

            
            	  set the MTRRs for the boot CPU and not for the secondary CPUs. This

            
            	  can lead to all sorts of problems, so it's good to say Y here.


            	  Just say Y here, all x86-64 machines support MTRRs.


            	  See <file:Documentation/mtrr.txt> for more information.


            config SMP

            
            	bool "Symmetric multi-processing support"

            
            	---help---

            
            	  This enables support for systems with more than one CPU. If you have

            
            	  a system with only one CPU, like most personal computers, say N. If

            
            	  you have a system with more than one CPU, say Y.


            	  If you say N here, the kernel will run on single and multiprocessor

            
            	  machines, but will use only one CPU of a multiprocessor machine. If

            
            	  you say Y here, the kernel will run on many, but not all,

            
            	  singleprocessor machines. On a singleprocessor machine, the kernel

            
            	  will run faster if you say N here.


            	  If you don't know what to do here, say N.


            config PREEMPT

            
            	bool "Preemptible Kernel"

            
            	---help---

            
            	  This option reduces the latency of the kernel when reacting to

            
            	  real-time or interactive events by allowing a low priority process to

            
            	  be preempted even if it is in kernel mode executing a system call.

            
            	  This allows applications to run more reliably even when the system is

            
            	  under load. On contrary it may also break your drivers and add

            
            	  priority inheritance problems to your system. Don't select it if

            
            	  you rely on a stable system or have slightly obscure hardware.

            
            	  It's also not very well tested on x86-64 currently.

            
            	  You have been warned.


            	  Say Y here if you are feeling brave and building a kernel for a

            
            	  desktop, embedded or real-time system.  Say N if you are unsure.


            config PREEMPT_BKL

            
            	bool "Preempt The Big Kernel Lock"

            
            	depends on PREEMPT

            
            	default y

            
            	help

            
            	  This option reduces the latency of the kernel by making the

            
            	  big kernel lock preemptible.


            	  Say Y here if you are building a kernel for a desktop system.

            
            	  Say N if you are unsure.


            config SCHED_SMT

            
            	bool "SMT (Hyperthreading) scheduler support"

            
            	depends on SMP

            
            	default off

            
            	help

            
            	  SMT scheduler support improves the CPU scheduler's decision making

            
            	  when dealing with Intel Pentium 4 chips with HyperThreading at a

            
            	  cost of slightly increased overhead in some places. If unsure say

            
            	  N here.


            config K8_NUMA

            
                   bool "K8 NUMA support"

            
                   select NUMA

            
                   depends on SMP

            
                   help

            
            	  Enable NUMA (Non Unified Memory Architecture) support for

            
            	  AMD Opteron Multiprocessor systems. The kernel will try to allocate

            
            	  memory used by a CPU on the local memory controller of the CPU

            
            	  and add some more NUMA awareness to the kernel.

            
            	  This code is recommended on all multiprocessor Opteron systems

            
            	  and normally doesn't hurt on others.


            config NUMA_EMU

            
            	bool "NUMA emulation support"

            
            	select NUMA

            
            	depends on SMP

            
            	help

            
            	  Enable NUMA emulation. A flat machine will be split

            
            	  into virtual nodes when booted with "numa=fake=N", where N is the

            
            	  number of nodes. This is only useful for debugging.


            config DISCONTIGMEM

            
                   bool

            
                   depends on NUMA

            
                   default y


            config NUMA

            
                   bool

            
                   default n


            config HAVE_DEC_LOCK

            
            	bool

            
            	depends on SMP

            
            	default y


            config NR_CPUS

            
            	int "Maximum number of CPUs (2-256)"

            
            	range 2 256

            
            	depends on SMP

            
            	default "8"

            
            	help

            
            	  This allows you to specify the maximum number of CPUs which this

            
            	  kernel will support. Current maximum is 256 CPUs due to

            
            	  APIC addressing limits. Less depending on the hardware.


            	  This is purely to save memory - each supported CPU requires

            
            	  memory in the static kernel configuration.


            config GART_IOMMU

            
            	bool "IOMMU support"

            
            	depends on PCI

            
            	help

            
            	  Support the K8 IOMMU. Needed to run systems with more than 4GB of memory

            
            	  properly with 32-bit PCI devices that do not support DAC (Double Address

            
            	  Cycle). The IOMMU can be turned off at runtime with the iommu=off parameter.

            
            	  Normally the kernel will take the right choice by itself.

            
            	  If unsure, say Y.


            # need this always enabled with GART_IOMMU for the VIA workaround

            
            config SWIOTLB

            
                   bool

            
                   depends on GART_IOMMU

            
                   default y


            config DUMMY_IOMMU

            
            	bool

            
            	depends on !GART_IOMMU && !SWIOTLB

            
            	default y

            
            	help

            
            	  Don't use IOMMU code. This will cause problems when you have more than 4GB

            
            	  of memory and any 32-bit devices. Don't turn on unless you know what you

            
            	  are doing.


            config X86_MCE

            
            	bool "Machine check support" if EMBEDDED

            
            	default y

            
            	help

            
            	   Include a machine check error handler to report hardware errors.

            
            	   This version will require the mcelog utility to decode some

            
            	   machine check error logs. See

            
            	   ftp://ftp.x86-64.org/pub/linux/tools/mcelog


            config X86_MCE_INTEL

            
            	bool "Intel MCE features"

            
            	depends on X86_MCE && X86_LOCAL_APIC

            
            	default y

            
            	help

            
            	   Additional support for intel specific MCE features such as

            
            	   the thermal monitor.

            
            endmenu


            #

            
            # Use the generic interrupt handling code in kernel/irq/:

            
            #

            
            config GENERIC_HARDIRQS

            
            	bool

            
            	default y


            config GENERIC_IRQ_PROBE

            
            	bool

            
            	default y


            menu "Power management options"


            source kernel/power/Kconfig


            source "drivers/acpi/Kconfig"


            source "arch/x86_64/kernel/cpufreq/Kconfig"


            endmenu


            menu "Bus options (PCI etc.)"


            config PCI

            
            	bool "PCI support"


            # x86-64 doesn't support PCI BIOS access from long mode so always go direct.

            
            config PCI_DIRECT

            
            	bool

            
            	depends on PCI

            
            	default y


            config PCI_MMCONFIG

            
            	bool "Support mmconfig PCI config space access"

            
            	depends on PCI

            
            	select ACPI_BOOT


            config UNORDERED_IO

            
                   bool "Unordered IO mapping access"

            
                   depends on EXPERIMENTAL

            
                   help

            
                     Use unordered stores to access IO memory mappings in device drivers.

            
            	 Still very experimental. When a driver works on IA64/ppc64/pa-risc it should

            
            	 work with this option, but it makes the drivers behave differently

            
            	 from i386. Requires that the driver writer used memory barriers

            
            	 properly.


            source "drivers/pci/Kconfig"


            source "drivers/pcmcia/Kconfig"


            source "drivers/pci/hotplug/Kconfig"


            endmenu


            menu "Executable file formats / Emulations"


            source "fs/Kconfig.binfmt"


            config IA32_EMULATION

            
            	bool "IA32 Emulation"

            
            	help

            
            	  Include code to run 32-bit programs under a 64-bit kernel. You should likely

            
            	  turn this on, unless you're 100% sure that you don't have any 32-bit programs

            
            	  left.


            config IA32_AOUT

            
                   bool "IA32 a.out support"

            
                   depends on IA32_EMULATION

            
                   help

            
                     Support old a.out binaries in the 32bit emulation.


            config COMPAT

            
            	bool

            
            	depends on IA32_EMULATION

            
            	default y


            config SYSVIPC_COMPAT

            
            	bool

            
            	depends on COMPAT && SYSVIPC

            
            	default y


            config UID16

            
            	bool

            
            	depends on IA32_EMULATION

            
            	default y


            endmenu


            source drivers/Kconfig


            source "drivers/firmware/Kconfig"


            source fs/Kconfig


            source "arch/x86_64/oprofile/Kconfig"


            source "arch/x86_64/Kconfig.debug"


            source "security/Kconfig"


            source "crypto/Kconfig"


            source "lib/Kconfig"
	#
	# For a description of the syntax of this configuration file,
	# see Documentation/kbuild/kconfig-language.txt.
	#
	# Note: ISA is disabled and will hopefully never be enabled.
	# If you managed to buy an ISA x86-64 box you'll have to fix all the
	# ISA drivers you need yourself.
	#

	mainmenu "Linux Kernel Configuration"

	config X86_64
	bool
	default y
	help
	Port to the x86-64 architecture. x86-64 is a 64-bit extension to the
	classical 32-bit x86 architecture. For details see
	<http://www.x86-64.org/>.

	config 64BIT
	def_bool y

	config X86
	bool
	default y

	config MMU
	bool
	default y

	config ISA
	bool

	config SBUS
	bool

	config RWSEM_GENERIC_SPINLOCK
	bool
	default y

	config RWSEM_XCHGADD_ALGORITHM
	bool

	config GENERIC_CALIBRATE_DELAY
	bool
	default y

	config X86_CMPXCHG
	bool
	default y

	config EARLY_PRINTK
	bool
	default y

	config HPET_TIMER
	bool
	default y
	help
	Use the IA-PC HPET (High Precision Event Timer) to manage
	time in preference to the PIT and RTC, if a HPET is
	present. The HPET provides a stable time base on SMP
	systems, unlike the RTC, but it is more expensive to access,
	as it is off-chip. You can find the HPET spec at
	<http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.

	If unsure, say Y.

	config HPET_EMULATE_RTC
	bool "Provide RTC interrupt"
	depends on HPET_TIMER && RTC=y

	config GENERIC_ISA_DMA
	bool
	default y

	config GENERIC_IOMAP
	bool
	default y

	source "init/Kconfig"


	menu "Processor type and features"

	choice
	prompt "Processor family"
	default MK8

	config MK8
	bool "AMD-Opteron/Athlon64"
	help
	Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.

	config MPSC
	bool "Intel EM64T"
	help
	Optimize for Intel Pentium 4 and Xeon CPUs with Intel
	Extended Memory 64 Technology(EM64T). For details see
	<http://www.intel.com/technology/64bitextensions/>.

	config GENERIC_CPU
	bool "Generic-x86-64"
	help
	Generic x86-64 CPU.

	endchoice

	#
	# Define implied options from the CPU selection here
	#
	config X86_L1_CACHE_BYTES
	int
	default "128" if GENERIC_CPU \|\| MPSC
	default "64" if MK8

	config X86_L1_CACHE_SHIFT
	int
	default "7" if GENERIC_CPU \|\| MPSC
	default "6" if MK8

	config X86_TSC
	bool
	default y

	config X86_GOOD_APIC
	bool
	default y

	config MICROCODE
	tristate "/dev/cpu/microcode - Intel CPU microcode support"
	---help---
	If you say Y here the 'File systems' section, you will be
	able to update the microcode on Intel processors. You will
	obviously need the actual microcode binary data itself which is
	not shipped with the Linux kernel.

	For latest news and information on obtaining all the required
	ingredients for this driver, check:
	<http://www.urbanmyth.org/microcode/>.

	To compile this driver as a module, choose M here: the
	module will be called microcode.
	If you use modprobe or kmod you may also want to add the line
	'alias char-major-10-184 microcode' to your /etc/modules.conf file.

	config X86_MSR
	tristate "/dev/cpu/*/msr - Model-specific register support"
	help
	This device gives privileged processes access to the x86
	Model-Specific Registers (MSRs). It is a character device with
	major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
	MSR accesses are directed to a specific CPU on multi-processor
	systems.

	config X86_CPUID
	tristate "/dev/cpu/*/cpuid - CPU information support"
	help
	This device gives processes access to the x86 CPUID instruction to
	be executed on a specific processor. It is a character device
	with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
	/dev/cpu/31/cpuid.

	# disable it for opteron optimized builds because it pulls in ACPI_BOOT
	config X86_HT
	bool
	depends on SMP && !MK8
	default y

	config MATH_EMULATION
	bool

	config MCA
	bool

	config EISA
	bool

	config X86_IO_APIC
	bool
	default y

	config X86_LOCAL_APIC
	bool
	default y

	config MTRR
	bool "MTRR (Memory Type Range Register) support"
	---help---
	On Intel P6 family processors (Pentium Pro, Pentium II and later)
	the Memory Type Range Registers (MTRRs) may be used to control
	processor access to memory ranges. This is most useful if you have
	a video (VGA) card on a PCI or AGP bus. Enabling write-combining
	allows bus write transfers to be combined into a larger transfer
	before bursting over the PCI/AGP bus. This can increase performance
	of image write operations 2.5 times or more. Saying Y here creates a
	/proc/mtrr file which may be used to manipulate your processor's
	MTRRs. Typically the X server should use this.

	This code has a reasonably generic interface so that similar
	control registers on other processors can be easily supported
	as well.

	Saying Y here also fixes a problem with buggy SMP BIOSes which only
	set the MTRRs for the boot CPU and not for the secondary CPUs. This
	can lead to all sorts of problems, so it's good to say Y here.

	Just say Y here, all x86-64 machines support MTRRs.

	See <file:Documentation/mtrr.txt> for more information.

	config SMP
	bool "Symmetric multi-processing support"
	---help---
	This enables support for systems with more than one CPU. If you have
	a system with only one CPU, like most personal computers, say N. If
	you have a system with more than one CPU, say Y.

	If you say N here, the kernel will run on single and multiprocessor
	machines, but will use only one CPU of a multiprocessor machine. If
	you say Y here, the kernel will run on many, but not all,
	singleprocessor machines. On a singleprocessor machine, the kernel
	will run faster if you say N here.

	If you don't know what to do here, say N.

	config PREEMPT
	bool "Preemptible Kernel"
	---help---
	This option reduces the latency of the kernel when reacting to
	real-time or interactive events by allowing a low priority process to
	be preempted even if it is in kernel mode executing a system call.
	This allows applications to run more reliably even when the system is
	under load. On contrary it may also break your drivers and add
	priority inheritance problems to your system. Don't select it if
	you rely on a stable system or have slightly obscure hardware.
	It's also not very well tested on x86-64 currently.
	You have been warned.

	Say Y here if you are feeling brave and building a kernel for a
	desktop, embedded or real-time system. Say N if you are unsure.

	config PREEMPT_BKL
	bool "Preempt The Big Kernel Lock"
	depends on PREEMPT
	default y
	help
	This option reduces the latency of the kernel by making the
	big kernel lock preemptible.

	Say Y here if you are building a kernel for a desktop system.
	Say N if you are unsure.

	config SCHED_SMT
	bool "SMT (Hyperthreading) scheduler support"
	depends on SMP
	default off
	help
	SMT scheduler support improves the CPU scheduler's decision making
	when dealing with Intel Pentium 4 chips with HyperThreading at a
	cost of slightly increased overhead in some places. If unsure say
	N here.

	config K8_NUMA
	bool "K8 NUMA support"
	select NUMA
	depends on SMP
	help
	Enable NUMA (Non Unified Memory Architecture) support for
	AMD Opteron Multiprocessor systems. The kernel will try to allocate
	memory used by a CPU on the local memory controller of the CPU
	and add some more NUMA awareness to the kernel.
	This code is recommended on all multiprocessor Opteron systems
	and normally doesn't hurt on others.

	config NUMA_EMU
	bool "NUMA emulation support"
	select NUMA
	depends on SMP
	help
	Enable NUMA emulation. A flat machine will be split
	into virtual nodes when booted with "numa=fake=N", where N is the
	number of nodes. This is only useful for debugging.

	config DISCONTIGMEM
	bool
	depends on NUMA
	default y

	config NUMA
	bool
	default n

	config HAVE_DEC_LOCK
	bool
	depends on SMP
	default y

	config NR_CPUS
	int "Maximum number of CPUs (2-256)"
	range 2 256
	depends on SMP
	default "8"
	help
	This allows you to specify the maximum number of CPUs which this
	kernel will support. Current maximum is 256 CPUs due to
	APIC addressing limits. Less depending on the hardware.

	This is purely to save memory - each supported CPU requires
	memory in the static kernel configuration.

	config GART_IOMMU
	bool "IOMMU support"
	depends on PCI
	help
	Support the K8 IOMMU. Needed to run systems with more than 4GB of memory
	properly with 32-bit PCI devices that do not support DAC (Double Address
	Cycle). The IOMMU can be turned off at runtime with the iommu=off parameter.
	Normally the kernel will take the right choice by itself.
	If unsure, say Y.

	# need this always enabled with GART_IOMMU for the VIA workaround
	config SWIOTLB
	bool
	depends on GART_IOMMU
	default y

	config DUMMY_IOMMU
	bool
	depends on !GART_IOMMU && !SWIOTLB
	default y
	help
	Don't use IOMMU code. This will cause problems when you have more than 4GB
	of memory and any 32-bit devices. Don't turn on unless you know what you
	are doing.

	config X86_MCE
	bool "Machine check support" if EMBEDDED
	default y
	help
	Include a machine check error handler to report hardware errors.
	This version will require the mcelog utility to decode some
	machine check error logs. See
	ftp://ftp.x86-64.org/pub/linux/tools/mcelog

	config X86_MCE_INTEL
	bool "Intel MCE features"
	depends on X86_MCE && X86_LOCAL_APIC
	default y
	help
	Additional support for intel specific MCE features such as
	the thermal monitor.
	endmenu

	#
	# Use the generic interrupt handling code in kernel/irq/:
	#
	config GENERIC_HARDIRQS
	bool
	default y

	config GENERIC_IRQ_PROBE
	bool
	default y

	menu "Power management options"

	source kernel/power/Kconfig

	source "drivers/acpi/Kconfig"

	source "arch/x86_64/kernel/cpufreq/Kconfig"

	endmenu

	menu "Bus options (PCI etc.)"

	config PCI
	bool "PCI support"

	# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
	config PCI_DIRECT
	bool
	depends on PCI
	default y

	config PCI_MMCONFIG
	bool "Support mmconfig PCI config space access"
	depends on PCI
	select ACPI_BOOT

	config UNORDERED_IO
	bool "Unordered IO mapping access"
	depends on EXPERIMENTAL
	help
	Use unordered stores to access IO memory mappings in device drivers.
	Still very experimental. When a driver works on IA64/ppc64/pa-risc it should
	work with this option, but it makes the drivers behave differently
	from i386. Requires that the driver writer used memory barriers
	properly.

	source "drivers/pci/Kconfig"

	source "drivers/pcmcia/Kconfig"

	source "drivers/pci/hotplug/Kconfig"

	endmenu


	menu "Executable file formats / Emulations"

	source "fs/Kconfig.binfmt"

	config IA32_EMULATION
	bool "IA32 Emulation"
	help
	Include code to run 32-bit programs under a 64-bit kernel. You should likely
	turn this on, unless you're 100% sure that you don't have any 32-bit programs
	left.

	config IA32_AOUT
	bool "IA32 a.out support"
	depends on IA32_EMULATION
	help
	Support old a.out binaries in the 32bit emulation.

	config COMPAT
	bool
	depends on IA32_EMULATION
	default y

	config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

	config UID16
	bool
	depends on IA32_EMULATION
	default y

	endmenu

	source drivers/Kconfig

	source "drivers/firmware/Kconfig"

	source fs/Kconfig

	source "arch/x86_64/oprofile/Kconfig"

	source "arch/x86_64/Kconfig.debug"

	source "security/Kconfig"

	source "crypto/Kconfig"

	source "lib/Kconfig"