[linux-2.6-block.git] / arch / x86 / Kconfig.cpu

# SPDX-License-Identifier: GPL-2.0
# Put here option for CPU selection and depending optimization
choice
	prompt "Processor family"
	default M686 if X86_32
	default GENERIC_CPU if X86_64
	help
	  This is the processor type of your CPU. This information is
	  used for optimizing purposes. In order to compile a kernel
	  that can run on all supported x86 CPU types (albeit not
	  optimally fast), you can specify "486" here.

	  Note that the 386 is no longer supported, this includes
	  AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2,
	  UMC 486SX-S and the NexGen Nx586.

	  The kernel will not necessarily run on earlier architectures than
	  the one you have chosen, e.g. a Pentium optimized kernel will run on
	  a PPro, but not necessarily on a i486.

	  Here are the settings recommended for greatest speed:
	  - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
	    SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
	  - "586" for generic Pentium CPUs lacking the TSC
	    (time stamp counter) register.
	  - "Pentium-Classic" for the Intel Pentium.
	  - "Pentium-MMX" for the Intel Pentium MMX.
	  - "Pentium-Pro" for the Intel Pentium Pro.
	  - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
	  - "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
	  - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
	  - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
	  - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
	  - "Opteron/Athlon64/Hammer/K8" for all K8 and newer AMD CPUs.
	  - "Crusoe" for the Transmeta Crusoe series.
	  - "Efficeon" for the Transmeta Efficeon series.
	  - "Winchip-C6" for original IDT Winchip.
	  - "Winchip-2" for IDT Winchips with 3dNow! capabilities.
	  - "AMD Elan" for the 32-bit AMD Elan embedded CPU.
	  - "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
	  - "Geode GX/LX" For AMD Geode GX and LX processors.
	  - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
	  - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above).
	  - "VIA C7" for VIA C7.
	  - "Intel P4" for the Pentium 4/Netburst microarchitecture.
	  - "Core 2/newer Xeon" for all core2 and newer Intel CPUs.
	  - "Intel Atom" for the Atom-microarchitecture CPUs.
	  - "Generic-x86-64" for a kernel which runs on any x86-64 CPU.

	  See each option's help text for additional details. If you don't know
	  what to do, choose "486".

config M486SX
	bool "486SX"
	depends on X86_32
	help
	  Select this for an 486-class CPU without an FPU such as
	  AMD/Cyrix/IBM/Intel SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5S.

config M486
	bool "486DX"
	depends on X86_32
	help
	  Select this for an 486-class CPU such as AMD/Cyrix/IBM/Intel
	  486DX/DX2/DX4 and UMC U5D.

config M586
	bool "586/K5/5x86/6x86/6x86MX"
	depends on X86_32
	help
	  Select this for an 586 or 686 series processor such as the AMD K5,
	  the Cyrix 5x86, 6x86 and 6x86MX.  This choice does not
	  assume the RDTSC (Read Time Stamp Counter) instruction.

config M586TSC
	bool "Pentium-Classic"
	depends on X86_32
	help
	  Select this for a Pentium Classic processor with the RDTSC (Read
	  Time Stamp Counter) instruction for benchmarking.

config M586MMX
	bool "Pentium-MMX"
	depends on X86_32
	help
	  Select this for a Pentium with the MMX graphics/multimedia
	  extended instructions.

config M686
	bool "Pentium-Pro"
	depends on X86_32
	help
	  Select this for Intel Pentium Pro chips.  This enables the use of
	  Pentium Pro extended instructions, and disables the init-time guard
	  against the f00f bug found in earlier Pentiums.

config MPENTIUMII
	bool "Pentium-II/Celeron(pre-Coppermine)"
	depends on X86_32
	help
	  Select this for Intel chips based on the Pentium-II and
	  pre-Coppermine Celeron core.  This option enables an unaligned
	  copy optimization, compiles the kernel with optimization flags
	  tailored for the chip, and applies any applicable Pentium Pro
	  optimizations.

config MPENTIUMIII
	bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
	depends on X86_32
	help
	  Select this for Intel chips based on the Pentium-III and
	  Celeron-Coppermine core.  This option enables use of some
	  extended prefetch instructions in addition to the Pentium II
	  extensions.

config MPENTIUMM
	bool "Pentium M"
	depends on X86_32
	help
	  Select this for Intel Pentium M (not Pentium-4 M)
	  notebook chips.

config MPENTIUM4
	bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
	depends on X86_32
	help
	  Select this for Intel Pentium 4 chips.  This includes the
	  Pentium 4, Pentium D, P4-based Celeron and Xeon, and
	  Pentium-4 M (not Pentium M) chips.  This option enables compile
	  flags optimized for the chip, uses the correct cache line size, and
	  applies any applicable optimizations.

	  CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 )

	  Select this for:
	    Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename:
		-Willamette
		-Northwood
		-Mobile Pentium 4
		-Mobile Pentium 4 M
		-Extreme Edition (Gallatin)
		-Prescott
		-Prescott 2M
		-Cedar Mill
		-Presler
		-Smithfiled
	    Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename:
		-Foster
		-Prestonia
		-Gallatin
		-Nocona
		-Irwindale
		-Cranford
		-Potomac
		-Paxville
		-Dempsey


config MK6
	bool "K6/K6-II/K6-III"
	depends on X86_32
	help
	  Select this for an AMD K6-family processor.  Enables use of
	  some extended instructions, and passes appropriate optimization
	  flags to GCC.

config MK7
	bool "Athlon/Duron/K7"
	depends on X86_32
	help
	  Select this for an AMD Athlon K7-family processor.  Enables use of
	  some extended instructions, and passes appropriate optimization
	  flags to GCC.

config MK8
	bool "Opteron/Athlon64/Hammer/K8"
	help
	  Select this for an AMD Opteron or Athlon64 Hammer-family processor.
	  Enables use of some extended instructions, and passes appropriate
	  optimization flags to GCC.

config MCRUSOE
	bool "Crusoe"
	depends on X86_32
	help
	  Select this for a Transmeta Crusoe processor.  Treats the processor
	  like a 586 with TSC, and sets some GCC optimization flags (like a
	  Pentium Pro with no alignment requirements).

config MEFFICEON
	bool "Efficeon"
	depends on X86_32
	help
	  Select this for a Transmeta Efficeon processor.

config MWINCHIPC6
	bool "Winchip-C6"
	depends on X86_32
	help
	  Select this for an IDT Winchip C6 chip.  Linux and GCC
	  treat this chip as a 586TSC with some extended instructions
	  and alignment requirements.

config MWINCHIP3D
	bool "Winchip-2/Winchip-2A/Winchip-3"
	depends on X86_32
	help
	  Select this for an IDT Winchip-2, 2A or 3.  Linux and GCC
	  treat this chip as a 586TSC with some extended instructions
	  and alignment requirements.  Also enable out of order memory
	  stores for this CPU, which can increase performance of some
	  operations.

config MELAN
	bool "AMD Elan"
	depends on X86_32
	help
	  Select this for an AMD Elan processor.

	  Do not use this option for K6/Athlon/Opteron processors!

config MGEODEGX1
	bool "GeodeGX1"
	depends on X86_32
	help
	  Select this for a Geode GX1 (Cyrix MediaGX) chip.

config MGEODE_LX
	bool "Geode GX/LX"
	depends on X86_32
	help
	  Select this for AMD Geode GX and LX processors.

config MCYRIXIII
	bool "CyrixIII/VIA-C3"
	depends on X86_32
	help
	  Select this for a Cyrix III or C3 chip.  Presently Linux and GCC
	  treat this chip as a generic 586. Whilst the CPU is 686 class,
	  it lacks the cmov extension which gcc assumes is present when
	  generating 686 code.
	  Note that Nehemiah (Model 9) and above will not boot with this
	  kernel due to them lacking the 3DNow! instructions used in earlier
	  incarnations of the CPU.

config MVIAC3_2
	bool "VIA C3-2 (Nehemiah)"
	depends on X86_32
	help
	  Select this for a VIA C3 "Nehemiah". Selecting this enables usage
	  of SSE and tells gcc to treat the CPU as a 686.
	  Note, this kernel will not boot on older (pre model 9) C3s.

config MVIAC7
	bool "VIA C7"
	depends on X86_32
	help
	  Select this for a VIA C7.  Selecting this uses the correct cache
	  shift and tells gcc to treat the CPU as a 686.

config MPSC
	bool "Intel P4 / older Netburst based Xeon"
	depends on X86_64
	help
	  Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
	  Xeon CPUs with Intel 64bit which is compatible with x86-64.
	  Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the
	  Netburst core and shouldn't use this option. You can distinguish them
	  using the cpu family field
	  in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.

config MCORE2
	bool "Core 2/newer Xeon"
	help

	  Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
	  53xx) CPUs. You can distinguish newer from older Xeons by the CPU
	  family in /proc/cpuinfo. Newer ones have 6 and older ones 15
	  (not a typo)

config MATOM
	bool "Intel Atom"
	help

	  Select this for the Intel Atom platform. Intel Atom CPUs have an
	  in-order pipelining architecture and thus can benefit from
	  accordingly optimized code. Use a recent GCC with specific Atom
	  support in order to fully benefit from selecting this option.

config GENERIC_CPU
	bool "Generic-x86-64"
	depends on X86_64
	help
	  Generic x86-64 CPU.
	  Run equally well on all x86-64 CPUs.

endchoice

config X86_GENERIC
	bool "Generic x86 support"
	depends on X86_32
	help
	  Instead of just including optimizations for the selected
	  x86 variant (e.g. PII, Crusoe or Athlon), include some more
	  generic optimizations as well. This will make the kernel
	  perform better on x86 CPUs other than that selected.

	  This is really intended for distributors who need more
	  generic optimizations.

#
# Define implied options from the CPU selection here
config X86_INTERNODE_CACHE_SHIFT
	int
	default "12" if X86_VSMP
	default X86_L1_CACHE_SHIFT

config X86_L1_CACHE_SHIFT
	int
	default "7" if MPENTIUM4 || MPSC
	default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU
	default "4" if MELAN || M486SX || M486 || MGEODEGX1
	default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX

config X86_F00F_BUG
	def_bool y
	depends on M586MMX || M586TSC || M586 || M486SX || M486

config X86_INVD_BUG
	def_bool y
	depends on M486SX || M486

config X86_ALIGNMENT_16
	def_bool y
	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486SX || M486 || MVIAC3_2 || MGEODEGX1

config X86_INTEL_USERCOPY
	def_bool y
	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2

config X86_USE_PPRO_CHECKSUM
	def_bool y
	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM

#
# P6_NOPs are a relatively minor optimization that require a family >=
# 6 processor, except that it is broken on certain VIA chips.
# Furthermore, AMD chips prefer a totally different sequence of NOPs
# (which work on all CPUs).  In addition, it looks like Virtual PC
# does not understand them.
#
# As a result, disallow these if we're not compiling for X86_64 (these
# NOPs do work on all x86-64 capable chips); the list of processors in
# the right-hand clause are the cores that benefit from this optimization.
#
config X86_P6_NOP
	def_bool y
	depends on X86_64
	depends on (MCORE2 || MPENTIUM4 || MPSC)

config X86_TSC
	def_bool y
	depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64

config X86_CMPXCHG64
	def_bool y
	depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586TSC || M586MMX || MATOM || MGEODE_LX || MGEODEGX1 || MK6 || MK7 || MK8

# this should be set for all -march=.. options where the compiler
# generates cmov.
config X86_CMOV
	def_bool y
	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)

config X86_MINIMUM_CPU_FAMILY
	int
	default "64" if X86_64
	default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8)
	default "5" if X86_32 && X86_CMPXCHG64
	default "4"

config X86_DEBUGCTLMSR
	def_bool y
	depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486SX || M486) && !UML

config IA32_FEAT_CTL
	def_bool y
	depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN

config X86_VMX_FEATURE_NAMES
	def_bool y
	depends on IA32_FEAT_CTL && X86_FEATURE_NAMES

menuconfig PROCESSOR_SELECT
	bool "Supported processor vendors" if EXPERT
	help
	  This lets you choose what x86 vendor support code your kernel
	  will include.

config CPU_SUP_INTEL
	default y
	bool "Support Intel processors" if PROCESSOR_SELECT
	help
	  This enables detection, tunings and quirks for Intel processors

	  You need this enabled if you want your kernel to run on an
	  Intel CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on an Intel
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_CYRIX_32
	default y
	bool "Support Cyrix processors" if PROCESSOR_SELECT
	depends on M486SX || M486 || M586 || M586TSC || M586MMX || (EXPERT && !64BIT)
	help
	  This enables detection, tunings and quirks for Cyrix processors

	  You need this enabled if you want your kernel to run on a
	  Cyrix CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on a Cyrix
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_AMD
	default y
	bool "Support AMD processors" if PROCESSOR_SELECT
	help
	  This enables detection, tunings and quirks for AMD processors

	  You need this enabled if you want your kernel to run on an
	  AMD CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on an AMD
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_HYGON
	default y
	bool "Support Hygon processors" if PROCESSOR_SELECT
	select CPU_SUP_AMD
	help
	  This enables detection, tunings and quirks for Hygon processors

	  You need this enabled if you want your kernel to run on an
	  Hygon CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on an Hygon
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_CENTAUR
	default y
	bool "Support Centaur processors" if PROCESSOR_SELECT
	help
	  This enables detection, tunings and quirks for Centaur processors

	  You need this enabled if you want your kernel to run on a
	  Centaur CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on a Centaur
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_TRANSMETA_32
	default y
	bool "Support Transmeta processors" if PROCESSOR_SELECT
	depends on !64BIT
	help
	  This enables detection, tunings and quirks for Transmeta processors

	  You need this enabled if you want your kernel to run on a
	  Transmeta CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on a Transmeta
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_UMC_32
	default y
	bool "Support UMC processors" if PROCESSOR_SELECT
	depends on M486SX || M486 || (EXPERT && !64BIT)
	help
	  This enables detection, tunings and quirks for UMC processors

	  You need this enabled if you want your kernel to run on a
	  UMC CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on a UMC
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_ZHAOXIN
	default y
	bool "Support Zhaoxin processors" if PROCESSOR_SELECT
	help
	  This enables detection, tunings and quirks for Zhaoxin processors

	  You need this enabled if you want your kernel to run on a
	  Zhaoxin CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller. Disabling it on a Zhaoxin
	  CPU might render the kernel unbootable.

	  If unsure, say N.

config CPU_SUP_VORTEX_32
	default y
	bool "Support Vortex processors" if PROCESSOR_SELECT
	depends on X86_32
	help
	  This enables detection, tunings and quirks for Vortex processors

	  You need this enabled if you want your kernel to run on a
	  Vortex CPU. Disabling this option on other types of CPUs
	  makes the kernel a tiny bit smaller.

	  If unsure, say N.
Commit	Line	Data
b2441318	1	# SPDX-License-Identifier: GPL-2.0
96d55b88	2	# Put here option for CPU selection and depending optimization
96d55b88 PBG	3	choice
96d55b88 PBG	4	prompt "Processor family"
1032c0ba SR	5	default M686 if X86_32
1032c0ba SR	6	default GENERIC_CPU if X86_64
a7f7f624	7	help
eb068e78 PA	8	This is the processor type of your CPU. This information is
	9	used for optimizing purposes. In order to compile a kernel
	10	that can run on all supported x86 CPU types (albeit not
	11	optimally fast), you can specify "486" here.
	12
	13	Note that the 386 is no longer supported, this includes
	14	AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2,
11af32b6	15	UMC 486SX-S and the NexGen Nx586.
96d55b88 PBG	16
	17	The kernel will not necessarily run on earlier architectures than
	18	the one you have chosen, e.g. a Pentium optimized kernel will run on
	19	a PPro, but not necessarily on a i486.
	20
	21	Here are the settings recommended for greatest speed:
96d55b88	22	- "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or
221836e9	23	SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.
96d55b88	24	- "586" for generic Pentium CPUs lacking the TSC
221836e9	25	(time stamp counter) register.
96d55b88 PBG	26	- "Pentium-Classic" for the Intel Pentium.
	27	- "Pentium-MMX" for the Intel Pentium MMX.
	28	- "Pentium-Pro" for the Intel Pentium Pro.
	29	- "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
	30	- "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
	31	- "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
	32	- "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
	33	- "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).
221836e9	34	- "Opteron/Athlon64/Hammer/K8" for all K8 and newer AMD CPUs.
96d55b88 PBG	35	- "Crusoe" for the Transmeta Crusoe series.
	36	- "Efficeon" for the Transmeta Efficeon series.
	37	- "Winchip-C6" for original IDT Winchip.
69d45dd1	38	- "Winchip-2" for IDT Winchips with 3dNow! capabilities.
221836e9	39	- "AMD Elan" for the 32-bit AMD Elan embedded CPU.
96d55b88	40	- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
f90b8116	41	- "Geode GX/LX" For AMD Geode GX and LX processors.
96d55b88	42	- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
48a1204c	43	- "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above).
0949be35	44	- "VIA C7" for VIA C7.
221836e9 BP	45	- "Intel P4" for the Pentium 4/Netburst microarchitecture.
	46	- "Core 2/newer Xeon" for all core2 and newer Intel CPUs.
	47	- "Intel Atom" for the Atom-microarchitecture CPUs.
	48	- "Generic-x86-64" for a kernel which runs on any x86-64 CPU.
	49
	50	See each option's help text for additional details. If you don't know
	51	what to do, choose "486".
96d55b88	52
87d6021b AB	53	config M486SX
	54	bool "486SX"
	55	depends on X86_32
a7f7f624	56	help
87d6021b AB	57	Select this for an 486-class CPU without an FPU such as
	58	AMD/Cyrix/IBM/Intel SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5S.
	59
221836e9	60	config M486
87d6021b	61	bool "486DX"
221836e9	62	depends on X86_32
a7f7f624	63	help
221836e9	64	Select this for an 486-class CPU such as AMD/Cyrix/IBM/Intel
87d6021b	65	486DX/DX2/DX4 and UMC U5D.
96d55b88 PBG	66
	67	config M586
	68	bool "586/K5/5x86/6x86/6x86MX"
1032c0ba	69	depends on X86_32
a7f7f624	70	help
96d55b88 PBG	71	Select this for an 586 or 686 series processor such as the AMD K5,
	72	the Cyrix 5x86, 6x86 and 6x86MX. This choice does not
	73	assume the RDTSC (Read Time Stamp Counter) instruction.
	74
	75	config M586TSC
	76	bool "Pentium-Classic"
1032c0ba	77	depends on X86_32
a7f7f624	78	help
96d55b88 PBG	79	Select this for a Pentium Classic processor with the RDTSC (Read
	80	Time Stamp Counter) instruction for benchmarking.
	81
	82	config M586MMX
	83	bool "Pentium-MMX"
1032c0ba	84	depends on X86_32
a7f7f624	85	help
96d55b88 PBG	86	Select this for a Pentium with the MMX graphics/multimedia
	87	extended instructions.
	88
	89	config M686
	90	bool "Pentium-Pro"
1032c0ba	91	depends on X86_32
a7f7f624	92	help
96d55b88 PBG	93	Select this for Intel Pentium Pro chips. This enables the use of
	94	Pentium Pro extended instructions, and disables the init-time guard
	95	against the f00f bug found in earlier Pentiums.
	96
	97	config MPENTIUMII
	98	bool "Pentium-II/Celeron(pre-Coppermine)"
1032c0ba	99	depends on X86_32
a7f7f624	100	help
96d55b88 PBG	101	Select this for Intel chips based on the Pentium-II and
	102	pre-Coppermine Celeron core. This option enables an unaligned
	103	copy optimization, compiles the kernel with optimization flags
	104	tailored for the chip, and applies any applicable Pentium Pro
	105	optimizations.
	106
	107	config MPENTIUMIII
	108	bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"
1032c0ba	109	depends on X86_32
a7f7f624	110	help
96d55b88 PBG	111	Select this for Intel chips based on the Pentium-III and
	112	Celeron-Coppermine core. This option enables use of some
	113	extended prefetch instructions in addition to the Pentium II
	114	extensions.
	115
	116	config MPENTIUMM
	117	bool "Pentium M"
1032c0ba	118	depends on X86_32
a7f7f624	119	help
96d55b88 PBG	120	Select this for Intel Pentium M (not Pentium-4 M)
	121	notebook chips.
	122
	123	config MPENTIUM4
c55d92d1	124	bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
1032c0ba	125	depends on X86_32
a7f7f624	126	help
96d55b88	127	Select this for Intel Pentium 4 chips. This includes the
75e3808b OP	128	Pentium 4, Pentium D, P4-based Celeron and Xeon, and
	129	Pentium-4 M (not Pentium M) chips. This option enables compile
	130	flags optimized for the chip, uses the correct cache line size, and
	131	applies any applicable optimizations.
	132
	133	CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 )
	134
	135	Select this for:
	136	Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename:
	137	-Willamette
	138	-Northwood
	139	-Mobile Pentium 4
	140	-Mobile Pentium 4 M
	141	-Extreme Edition (Gallatin)
	142	-Prescott
	143	-Prescott 2M
	144	-Cedar Mill
	145	-Presler
	146	-Smithfiled
	147	Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename:
	148	-Foster
	149	-Prestonia
	150	-Gallatin
	151	-Nocona
	152	-Irwindale
	153	-Cranford
	154	-Potomac
	155	-Paxville
	156	-Dempsey
	157
96d55b88 PBG	158
	159	config MK6
	160	bool "K6/K6-II/K6-III"
1032c0ba	161	depends on X86_32
a7f7f624	162	help
96d55b88 PBG	163	Select this for an AMD K6-family processor. Enables use of
	164	some extended instructions, and passes appropriate optimization
	165	flags to GCC.
	166
	167	config MK7
	168	bool "Athlon/Duron/K7"
1032c0ba	169	depends on X86_32
a7f7f624	170	help
96d55b88 PBG	171	Select this for an AMD Athlon K7-family processor. Enables use of
	172	some extended instructions, and passes appropriate optimization
	173	flags to GCC.
	174
	175	config MK8
	176	bool "Opteron/Athlon64/Hammer/K8"
a7f7f624	177	help
36723bfe BP	178	Select this for an AMD Opteron or Athlon64 Hammer-family processor.
	179	Enables use of some extended instructions, and passes appropriate
	180	optimization flags to GCC.
96d55b88 PBG	181
	182	config MCRUSOE
	183	bool "Crusoe"
1032c0ba	184	depends on X86_32
a7f7f624	185	help
96d55b88 PBG	186	Select this for a Transmeta Crusoe processor. Treats the processor
	187	like a 586 with TSC, and sets some GCC optimization flags (like a
	188	Pentium Pro with no alignment requirements).
	189
	190	config MEFFICEON
	191	bool "Efficeon"
1032c0ba	192	depends on X86_32
a7f7f624	193	help
96d55b88 PBG	194	Select this for a Transmeta Efficeon processor.
	195
	196	config MWINCHIPC6
	197	bool "Winchip-C6"
1032c0ba	198	depends on X86_32
a7f7f624	199	help
96d55b88 PBG	200	Select this for an IDT Winchip C6 chip. Linux and GCC
	201	treat this chip as a 586TSC with some extended instructions
	202	and alignment requirements.
	203
96d55b88	204	config MWINCHIP3D
69d45dd1	205	bool "Winchip-2/Winchip-2A/Winchip-3"
1032c0ba	206	depends on X86_32
a7f7f624	207	help
69d45dd1	208	Select this for an IDT Winchip-2, 2A or 3. Linux and GCC
96d55b88	209	treat this chip as a 586TSC with some extended instructions
3dde6ad8	210	and alignment requirements. Also enable out of order memory
96d55b88 PBG	211	stores for this CPU, which can increase performance of some
	212	operations.
	213
ce9c99af IC	214	config MELAN
	215	bool "AMD Elan"
	216	depends on X86_32
a7f7f624	217	help
ce9c99af IC	218	Select this for an AMD Elan processor.
	219
	220	Do not use this option for K6/Athlon/Opteron processors!
	221
96d55b88 PBG	222	config MGEODEGX1
96d55b88 PBG	223	bool "GeodeGX1"
1032c0ba	224	depends on X86_32
a7f7f624	225	help
96d55b88 PBG	226	Select this for a Geode GX1 (Cyrix MediaGX) chip.
96d55b88 PBG	227
f90b8116	228	config MGEODE_LX
96daa8cd	229	bool "Geode GX/LX"
1032c0ba	230	depends on X86_32
a7f7f624	231	help
96daa8cd	232	Select this for AMD Geode GX and LX processors.
f90b8116	233
96d55b88 PBG	234	config MCYRIXIII
96d55b88 PBG	235	bool "CyrixIII/VIA-C3"
1032c0ba	236	depends on X86_32
a7f7f624	237	help
96d55b88 PBG	238	Select this for a Cyrix III or C3 chip. Presently Linux and GCC
	239	treat this chip as a generic 586. Whilst the CPU is 686 class,
	240	it lacks the cmov extension which gcc assumes is present when
	241	generating 686 code.
	242	Note that Nehemiah (Model 9) and above will not boot with this
	243	kernel due to them lacking the 3DNow! instructions used in earlier
	244	incarnations of the CPU.
	245
	246	config MVIAC3_2
	247	bool "VIA C3-2 (Nehemiah)"
1032c0ba	248	depends on X86_32
a7f7f624	249	help
96d55b88 PBG	250	Select this for a VIA C3 "Nehemiah". Selecting this enables usage
	251	of SSE and tells gcc to treat the CPU as a 686.
	252	Note, this kernel will not boot on older (pre model 9) C3s.
	253
0949be35 SA	254	config MVIAC7
0949be35 SA	255	bool "VIA C7"
1032c0ba	256	depends on X86_32
a7f7f624	257	help
0949be35 SA	258	Select this for a VIA C7. Selecting this uses the correct cache
	259	shift and tells gcc to treat the CPU as a 686.
	260
1032c0ba SR	261	config MPSC
	262	bool "Intel P4 / older Netburst based Xeon"
	263	depends on X86_64
a7f7f624	264	help
1032c0ba SR	265	Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
	266	Xeon CPUs with Intel 64bit which is compatible with x86-64.
	267	Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the
96daa8cd	268	Netburst core and shouldn't use this option. You can distinguish them
1032c0ba SR	269	using the cpu family field
	270	in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
	271
	272	config MCORE2
	273	bool "Core 2/newer Xeon"
a7f7f624	274	help
36723bfe BP	275
	276	Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
	277	53xx) CPUs. You can distinguish newer from older Xeons by the CPU
	278	family in /proc/cpuinfo. Newer ones have 6 and older ones 15
	279	(not a typo)
1032c0ba	280
366d19e1 TD	281	config MATOM
366d19e1 TD	282	bool "Intel Atom"
a7f7f624	283	help
366d19e1 TD	284
	285	Select this for the Intel Atom platform. Intel Atom CPUs have an
	286	in-order pipelining architecture and thus can benefit from
	287	accordingly optimized code. Use a recent GCC with specific Atom
	288	support in order to fully benefit from selecting this option.
	289
1032c0ba SR	290	config GENERIC_CPU
	291	bool "Generic-x86-64"
	292	depends on X86_64
a7f7f624	293	help
1032c0ba SR	294	Generic x86-64 CPU.
	295	Run equally well on all x86-64 CPUs.
	296
96d55b88 PBG	297	endchoice
	298
	299	config X86_GENERIC
1032c0ba SR	300	bool "Generic x86 support"
1032c0ba SR	301	depends on X86_32
a7f7f624	302	help
96d55b88 PBG	303	Instead of just including optimizations for the selected
	304	x86 variant (e.g. PII, Crusoe or Athlon), include some more
	305	generic optimizations as well. This will make the kernel
	306	perform better on x86 CPUs other than that selected.
	307
	308	This is really intended for distributors who need more
	309	generic optimizations.
	310
96d55b88 PBG	311	#
96d55b88 PBG	312	# Define implied options from the CPU selection here
350f8f56	313	config X86_INTERNODE_CACHE_SHIFT
1032c0ba	314	int
350f8f56	315	default "12" if X86_VSMP
350f8f56	316	default X86_L1_CACHE_SHIFT
1032c0ba	317
96d55b88 PBG	318	config X86_L1_CACHE_SHIFT
96d55b88 PBG	319	int
0a2a18b7	320	default "7" if MPENTIUM4 \|\| MPSC
350f8f56	321	default "6" if MK7 \|\| MK8 \|\| MPENTIUMM \|\| MCORE2 \|\| MATOM \|\| MVIAC7 \|\| X86_GENERIC \|\| GENERIC_CPU
87d6021b	322	default "4" if MELAN \|\| M486SX \|\| M486 \|\| MGEODEGX1
69d45dd1	323	default "5" if MWINCHIP3D \|\| MWINCHIPC6 \|\| MCRUSOE \|\| MEFFICEON \|\| MCYRIXIII \|\| MK6 \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| M586MMX \|\| M586TSC \|\| M586 \|\| MVIAC3_2 \|\| MGEODE_LX
96d55b88	324
96d55b88	325	config X86_F00F_BUG
96daa8cd	326	def_bool y
87d6021b	327	depends on M586MMX \|\| M586TSC \|\| M586 \|\| M486SX \|\| M486
96d55b88	328
40d2e763 BG	329	config X86_INVD_BUG
40d2e763 BG	330	def_bool y
87d6021b	331	depends on M486SX \|\| M486
40d2e763	332
96d55b88	333	config X86_ALIGNMENT_16
96daa8cd	334	def_bool y
87d6021b	335	depends on MWINCHIP3D \|\| MWINCHIPC6 \|\| MCYRIXIII \|\| MELAN \|\| MK6 \|\| M586MMX \|\| M586TSC \|\| M586 \|\| M486SX \|\| M486 \|\| MVIAC3_2 \|\| MGEODEGX1
96d55b88	336
96d55b88	337	config X86_INTEL_USERCOPY
96daa8cd	338	def_bool y
c55d92d1	339	depends on MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M586MMX \|\| X86_GENERIC \|\| MK8 \|\| MK7 \|\| MEFFICEON \|\| MCORE2
96d55b88 PBG	340
96d55b88 PBG	341	config X86_USE_PPRO_CHECKSUM
96daa8cd	342	def_bool y
1eda75c1	343	depends on MWINCHIP3D \|\| MWINCHIPC6 \|\| MCYRIXIII \|\| MK7 \|\| MK6 \|\| MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| MK8 \|\| MVIAC3_2 \|\| MVIAC7 \|\| MEFFICEON \|\| MGEODE_LX \|\| MCORE2 \|\| MATOM
96d55b88	344
959b3be6 PA	345	#
	346	# P6_NOPs are a relatively minor optimization that require a family >=
	347	# 6 processor, except that it is broken on certain VIA chips.
	348	# Furthermore, AMD chips prefer a totally different sequence of NOPs
14469a8d LT	349	# (which work on all CPUs). In addition, it looks like Virtual PC
	350	# does not understand them.
	351	#
	352	# As a result, disallow these if we're not compiling for X86_64 (these
	353	# NOPs do work on all x86-64 capable chips); the list of processors in
	354	# the right-hand clause are the cores that benefit from this optimization.
959b3be6	355	#
7343b3b3 PA	356	config X86_P6_NOP
7343b3b3 PA	357	def_bool y
14469a8d LT	358	depends on X86_64
14469a8d LT	359	depends on (MCORE2 \|\| MPENTIUM4 \|\| MPSC)
7343b3b3	360
96d55b88	361	config X86_TSC
96daa8cd	362	def_bool y
b5660ba7	363	depends on (MWINCHIP3D \|\| MCRUSOE \|\| MEFFICEON \|\| MCYRIXIII \|\| MK7 \|\| MK6 \|\| MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| M586MMX \|\| M586TSC \|\| MK8 \|\| MVIAC3_2 \|\| MVIAC7 \|\| MGEODEGX1 \|\| MGEODE_LX \|\| MCORE2 \|\| MATOM) \|\| X86_64
c7f81c94	364
f8096f92 JB	365	config X86_CMPXCHG64
f8096f92 JB	366	def_bool y
f960cfd1	367	depends on X86_PAE \|\| X86_64 \|\| MCORE2 \|\| MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| M586TSC \|\| M586MMX \|\| MATOM \|\| MGEODE_LX \|\| MGEODEGX1 \|\| MK6 \|\| MK7 \|\| MK8
f8096f92	368
c7f81c94 AK	369	# this should be set for all -march=.. options where the compiler
	370	# generates cmov.
	371	config X86_CMOV
96daa8cd	372	def_bool y
98059e34	373	depends on (MK8 \|\| MK7 \|\| MCORE2 \|\| MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| MVIAC3_2 \|\| MVIAC7 \|\| MCRUSOE \|\| MEFFICEON \|\| X86_64 \|\| MATOM \|\| MGEODE_LX)
c7f81c94	374
de32e041	375	config X86_MINIMUM_CPU_FAMILY
c7f81c94	376	int
1032c0ba	377	default "64" if X86_64
25d76ac8	378	default "6" if X86_32 && (MPENTIUM4 \|\| MPENTIUMM \|\| MPENTIUMIII \|\| MPENTIUMII \|\| M686 \|\| MVIAC3_2 \|\| MVIAC7 \|\| MEFFICEON \|\| MATOM \|\| MCRUSOE \|\| MCORE2 \|\| MK7 \|\| MK8)
982d007a	379	default "5" if X86_32 && X86_CMPXCHG64
eb068e78	380	default "4"
c7f81c94	381
0a049bb0	382	config X86_DEBUGCTLMSR
96daa8cd	383	def_bool y
87d6021b	384	depends on !(MK6 \|\| MWINCHIPC6 \|\| MWINCHIP3D \|\| MCYRIXIII \|\| M586MMX \|\| M586TSC \|\| M586 \|\| M486SX \|\| M486) && !UML
8d02c211	385
1db2a6e1 SC	386	config IA32_FEAT_CTL
1db2a6e1 SC	387	def_bool y
7d37953b	388	depends on CPU_SUP_INTEL \|\| CPU_SUP_CENTAUR \|\| CPU_SUP_ZHAOXIN
1db2a6e1	389
b47ce1fe SC	390	config X86_VMX_FEATURE_NAMES
	391	def_bool y
	392	depends on IA32_FEAT_CTL && X86_FEATURE_NAMES
	393
8d02c211	394	menuconfig PROCESSOR_SELECT
6a108a14	395	bool "Supported processor vendors" if EXPERT
a7f7f624	396	help
8d02c211 TP	397	This lets you choose what x86 vendor support code your kernel
	398	will include.
	399
879d792b	400	config CPU_SUP_INTEL
8d02c211 TP	401	default y
8d02c211 TP	402	bool "Support Intel processors" if PROCESSOR_SELECT
a7f7f624	403	help
b7b3a425 IM	404	This enables detection, tunings and quirks for Intel processors
	405
	406	You need this enabled if you want your kernel to run on an
	407	Intel CPU. Disabling this option on other types of CPUs
	408	makes the kernel a tiny bit smaller. Disabling it on an Intel
	409	CPU might render the kernel unbootable.
	410
	411	If unsure, say N.
8d02c211 TP	412
	413	config CPU_SUP_CYRIX_32
	414	default y
	415	bool "Support Cyrix processors" if PROCESSOR_SELECT
87d6021b	416	depends on M486SX \|\| M486 \|\| M586 \|\| M586TSC \|\| M586MMX \|\| (EXPERT && !64BIT)
a7f7f624	417	help
b7b3a425 IM	418	This enables detection, tunings and quirks for Cyrix processors
	419
	420	You need this enabled if you want your kernel to run on a
	421	Cyrix CPU. Disabling this option on other types of CPUs
	422	makes the kernel a tiny bit smaller. Disabling it on a Cyrix
	423	CPU might render the kernel unbootable.
	424
	425	If unsure, say N.
8d02c211	426
ff73152c	427	config CPU_SUP_AMD
8d02c211 TP	428	default y
8d02c211 TP	429	bool "Support AMD processors" if PROCESSOR_SELECT
a7f7f624	430	help
b7b3a425 IM	431	This enables detection, tunings and quirks for AMD processors
	432
	433	You need this enabled if you want your kernel to run on an
	434	AMD CPU. Disabling this option on other types of CPUs
	435	makes the kernel a tiny bit smaller. Disabling it on an AMD
	436	CPU might render the kernel unbootable.
	437
	438	If unsure, say N.
8d02c211	439
c9661c1e PW	440	config CPU_SUP_HYGON
	441	default y
	442	bool "Support Hygon processors" if PROCESSOR_SELECT
	443	select CPU_SUP_AMD
	444	help
	445	This enables detection, tunings and quirks for Hygon processors
	446
	447	You need this enabled if you want your kernel to run on an
	448	Hygon CPU. Disabling this option on other types of CPUs
	449	makes the kernel a tiny bit smaller. Disabling it on an Hygon
	450	CPU might render the kernel unbootable.
	451
	452	If unsure, say N.
	453
48f4c485	454	config CPU_SUP_CENTAUR
8d02c211 TP	455	default y
8d02c211 TP	456	bool "Support Centaur processors" if PROCESSOR_SELECT
a7f7f624	457	help
b7b3a425 IM	458	This enables detection, tunings and quirks for Centaur processors
	459
	460	You need this enabled if you want your kernel to run on a
	461	Centaur CPU. Disabling this option on other types of CPUs
	462	makes the kernel a tiny bit smaller. Disabling it on a Centaur
	463	CPU might render the kernel unbootable.
	464
	465	If unsure, say N.
8d02c211 TP	466
	467	config CPU_SUP_TRANSMETA_32
	468	default y
	469	bool "Support Transmeta processors" if PROCESSOR_SELECT
	470	depends on !64BIT
a7f7f624	471	help
b7b3a425 IM	472	This enables detection, tunings and quirks for Transmeta processors
	473
	474	You need this enabled if you want your kernel to run on a
	475	Transmeta CPU. Disabling this option on other types of CPUs
	476	makes the kernel a tiny bit smaller. Disabling it on a Transmeta
	477	CPU might render the kernel unbootable.
	478
	479	If unsure, say N.
8d02c211 TP	480
	481	config CPU_SUP_UMC_32
	482	default y
	483	bool "Support UMC processors" if PROCESSOR_SELECT
87d6021b	484	depends on M486SX \|\| M486 \|\| (EXPERT && !64BIT)
a7f7f624	485	help
b7b3a425 IM	486	This enables detection, tunings and quirks for UMC processors
	487
	488	You need this enabled if you want your kernel to run on a
	489	UMC CPU. Disabling this option on other types of CPUs
	490	makes the kernel a tiny bit smaller. Disabling it on a UMC
	491	CPU might render the kernel unbootable.
	492
	493	If unsure, say N.
761fdd5e TW	494
	495	config CPU_SUP_ZHAOXIN
	496	default y
	497	bool "Support Zhaoxin processors" if PROCESSOR_SELECT
	498	help
	499	This enables detection, tunings and quirks for Zhaoxin processors
	500
	501	You need this enabled if you want your kernel to run on a
	502	Zhaoxin CPU. Disabling this option on other types of CPUs
	503	makes the kernel a tiny bit smaller. Disabling it on a Zhaoxin
	504	CPU might render the kernel unbootable.
	505
	506	If unsure, say N.
639475d4 MDSV	507
	508	config CPU_SUP_VORTEX_32
	509	default y
	510	bool "Support Vortex processors" if PROCESSOR_SELECT
	511	depends on X86_32
	512	help
	513	This enables detection, tunings and quirks for Vortex processors
	514
	515	You need this enabled if you want your kernel to run on a
	516	Vortex CPU. Disabling this option on other types of CPUs
	517	makes the kernel a tiny bit smaller.
	518
	519	If unsure, say N.