more-ISA-levels-and-uarches-for-kernel-4.19-5.4.patch

From b33e006c1582f59921d878052005f948dc1291ac Mon Sep 17 00:00:00 2001
From: graysky <therealgraysky AT proton DOT me>
Date: Mon, 16 Sep 2024 05:55:58 -0400

FEATURES
This patch adds additional tunings via new x86-64 ISA levels and
more micro-architecture options to the Linux kernel in three classes.

1. New generic x86-64 ISA levels

These are selectable under:
	Processor type and features ---> x86-64 compiler ISA level

• x86-64     A value of (1) is the default
• x86-64-v2  A value of (2) brings support for vector
             instructions up to Streaming SIMD Extensions 4.2 (SSE4.2)
	     and Supplemental Streaming SIMD Extensions 3 (SSSE3), the
	     POPCNT instruction, and CMPXCHG16B.
• x86-64-v3  A value of (3) adds vector instructions up to AVX2, MOVBE,
             and additional bit-manipulation instructions.

There is also x86-64-v4 but including this makes little sense as
the kernel does not use any of the AVX512 instructions anyway.

Users of glibc 2.33 and above can see which level is supported by running:
	/lib/ld-linux-x86-64.so.2 --help | grep supported
Or
	/lib64/ld-linux-x86-64.so.2 --help | grep supported

2. New micro-architectures

These are selectable under:
	Processor type and features ---> Processor family 

• AMD Improved K8-family
• AMD K10-family
• AMD Family 10h (Barcelona)
• AMD Family 14h (Bobcat)
• AMD Family 16h (Jaguar)
• AMD Family 15h (Bulldozer)
• AMD Family 15h (Piledriver)
• AMD Family 15h (Steamroller)
• AMD Family 15h (Excavator)
• AMD Family 17h (Zen)
• AMD Family 17h (Zen 2)
• AMD Family 19h (Zen 3)**
• AMD Family 19h (Zen 4)‡
• AMD Family 1Ah (Zen 5)§
• Intel Silvermont low-power processors
• Intel Goldmont low-power processors (Apollo Lake and Denverton)
• Intel Goldmont Plus low-power processors (Gemini Lake)
• Intel 1st Gen Core i3/i5/i7 (Nehalem)
• Intel 1.5 Gen Core i3/i5/i7 (Westmere)
• Intel 2nd Gen Core i3/i5/i7 (Sandybridge)
• Intel 3rd Gen Core i3/i5/i7 (Ivybridge)
• Intel 4th Gen Core i3/i5/i7 (Haswell)
• Intel 5th Gen Core i3/i5/i7 (Broadwell)
• Intel 6th Gen Core i3/i5/i7 (Skylake)
• Intel 6th Gen Core i7/i9 (Skylake X)
• Intel 8th Gen Core i3/i5/i7 (Cannon Lake)
• Intel 10th Gen Core i7/i9 (Ice Lake)
• Intel Xeon (Cascade Lake)
• Intel Xeon (Cooper Lake)*
• Intel 3rd Gen 10nm++ i3/i5/i7/i9-family (Tiger Lake)*
• Intel 4th Gen 10nm++ Xeon (Sapphire Rapids)†
• Intel 11th Gen i3/i5/i7/i9-family (Rocket Lake)†
• Intel 12th Gen i3/i5/i7/i9-family (Alder Lake)†
• Intel 13th Gen i3/i5/i7/i9-family (Raptor Lake)‡
• Intel 14th Gen i3/i5/i7/i9-family (Meteor Lake)‡
• Intel 5th Gen 10nm++ Xeon (Emerald Rapids)‡

Notes: If not otherwise noted, gcc >=9.1 is required for support.
       *Requires gcc >=10.1 or clang >=10.0
      **Required gcc >=10.3 or clang >=12.0
       †Required gcc >=11.1 or clang >=12.0
       ‡Required gcc >=13.0 or clang >=15.0.5
       §Required gcc  >14.0 or clang >=19.0?

3. Auto-detected micro-architecture levels

Compile by passing the '-march=native' option which, "selects the CPU
to generate code for at compilation time by determining the processor type of
the compiling machine. Using -march=native enables all instruction subsets
supported by the local machine and will produce code optimized for the local
machine under the constraints of the selected instruction set."[1]

Users of Intel CPUs should select the 'Intel-Native' option and users of AMD
CPUs should select the 'AMD-Native' option.

MINOR NOTES RELATING TO INTEL ATOM PROCESSORS
This patch also changes -march=atom to -march=bonnell in accordance with the
gcc v4.9 changes. Upstream is using the deprecated -match=atom flags when I
believe it should use the newer -march=bonnell flag for atom processors.[2]

It is not recommended to compile on Atom-CPUs with the 'native' option.[3] The
recommendation is to use the 'atom' option instead.

BENEFITS
Small but real speed increases are measurable using a make endpoint comparing
a generic kernel to one built with one of the respective microarchs.

See the following experimental evidence supporting this statement:
https://github.com/graysky2/kernel_compiler_patch?tab=readme-ov-file#benchmarks

REQUIREMENTS
linux version 6.8-rc3+
gcc version >=9.0 or clang version >=9.0

ACKNOWLEDGMENTS
This patch builds on the seminal work by Jeroen.[4]

REFERENCES
1.  https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html#index-x86-Options
2.  https://bugzilla.kernel.org/show_bug.cgi?id=77461
3.  https://github.com/graysky2/kernel_gcc_patch/issues/15
4.  http://www.linuxforge.net/docs/linux/linux-gcc.php

---
 arch/x86/Kconfig.cpu | 347 +++++++++++++++++++++++++++++++++++++++++--
 arch/x86/Makefile    |  50 ++++++-
 2 files changed, 386 insertions(+), 11 deletions(-)

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 638411f22267..36b01d44db92 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -148,9 +148,8 @@ config MPENTIUM4
 		-Paxville
 		-Dempsey

-
 config MK6
-	bool "K6/K6-II/K6-III"
+	bool "AMD K6/K6-II/K6-III"
 	depends on X86_32
 	---help---
 	  Select this for an AMD K6-family processor.  Enables use of
@@ -158,7 +157,7 @@ config MK6
 	  flags to GCC.

 config MK7
-	bool "Athlon/Duron/K7"
+	bool "AMD Athlon/Duron/K7"
 	depends on X86_32
 	---help---
 	  Select this for an AMD Athlon K7-family processor.  Enables use of
@@ -166,12 +165,114 @@ config MK7
 	  flags to GCC.

 config MK8
-	bool "Opteron/Athlon64/Hammer/K8"
-	---help---
+	bool "AMD 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 MK8SSE3
+	bool "AMD Opteron/Athlon64/Hammer/K8 with SSE3"
+	help
+	  Select this for improved AMD Opteron or Athlon64 Hammer-family processors.
+	  Enables use of some extended instructions, and passes appropriate
+	  optimization flags to GCC.
+
+config MK10
+	bool "AMD 61xx/7x50/PhenomX3/X4/II/K10"
+	help
+	  Select this for an AMD 61xx Eight-Core Magny-Cours, Athlon X2 7x50,
+	  Phenom X3/X4/II, Athlon II X2/X3/X4, or Turion II-family processor.
+	  Enables use of some extended instructions, and passes appropriate
+	  optimization flags to GCC.
+
+config MBARCELONA
+	bool "AMD Barcelona"
+	help
+	  Select this for AMD Family 10h Barcelona processors.
+
+	  Enables -march=barcelona
+
+config MBOBCAT
+	bool "AMD Bobcat"
+	help
+	  Select this for AMD Family 14h Bobcat processors.
+
+	  Enables -march=btver1
+
+config MJAGUAR
+	bool "AMD Jaguar"
+	help
+	  Select this for AMD Family 16h Jaguar processors.
+
+	  Enables -march=btver2
+
+config MBULLDOZER
+	bool "AMD Bulldozer"
+	help
+	  Select this for AMD Family 15h Bulldozer processors.
+
+	  Enables -march=bdver1
+
+config MPILEDRIVER
+	bool "AMD Piledriver"
+	help
+	  Select this for AMD Family 15h Piledriver processors.
+
+	  Enables -march=bdver2
+
+config MSTEAMROLLER
+	bool "AMD Steamroller"
+	help
+	  Select this for AMD Family 15h Steamroller processors.
+
+	  Enables -march=bdver3
+
+config MEXCAVATOR
+	bool "AMD Excavator"
+	help
+	  Select this for AMD Family 15h Excavator processors.
+
+	  Enables -march=bdver4
+
+config MZEN
+	bool "AMD Zen"
+	help
+	  Select this for AMD Family 17h Zen processors.
+
+	  Enables -march=znver1
+
+config MZEN2
+	bool "AMD Zen 2"
+	help
+	  Select this for AMD Family 17h Zen 2 processors.
+
+	  Enables -march=znver2
+
+config MZEN3
+	bool "AMD Zen 3"
+	depends on (CC_IS_GCC && GCC_VERSION >= 100300) || (CC_IS_CLANG && CLANG_VERSION >= 120000)
+	help
+	  Select this for AMD Family 19h Zen 3 processors.
+
+	  Enables -march=znver3
+
+config MZEN4
+	bool "AMD Zen 4"
+	depends on (CC_IS_GCC && GCC_VERSION >= 130000) || (CC_IS_CLANG && CLANG_VERSION >= 160000)
+	help
+	  Select this for AMD Family 19h Zen 4 processors.
+
+	  Enables -march=znver4
+
+config MZEN5
+	bool "AMD Zen 5"
+	depends on (CC_IS_GCC && GCC_VERSION > 140000) || (CC_IS_CLANG && CLANG_VERSION >= 191000)
+	help
+	  Select this for AMD Family 19h Zen 5 processors.
+
+	  Enables -march=znver5
+
 config MCRUSOE
 	bool "Crusoe"
 	depends on X86_32
@@ -280,6 +381,190 @@ config MATOM
 	  accordingly optimized code. Use a recent GCC with specific Atom
 	  support in order to fully benefit from selecting this option.

+config MNEHALEM
+	bool "Intel Nehalem"
+	help
+
+	  Select this for 1st Gen Core processors in the Nehalem family.
+
+	  Enables -march=nehalem
+
+config MWESTMERE
+	bool "Intel Westmere"
+	help
+
+	  Select this for the Intel Westmere formerly Nehalem-C family.
+
+	  Enables -march=westmere
+
+config MSILVERMONT
+	bool "Intel Silvermont"
+	help
+
+	  Select this for the Intel Silvermont platform.
+
+	  Enables -march=silvermont
+
+config MGOLDMONT
+	bool "Intel Goldmont"
+	help
+
+	  Select this for the Intel Goldmont platform including Apollo Lake and Denverton.
+
+	  Enables -march=goldmont
+
+config MGOLDMONTPLUS
+	bool "Intel Goldmont Plus"
+	help
+
+	  Select this for the Intel Goldmont Plus platform including Gemini Lake.
+
+	  Enables -march=goldmont-plus
+
+config MSANDYBRIDGE
+	bool "Intel Sandy Bridge"
+	help
+
+	  Select this for 2nd Gen Core processors in the Sandy Bridge family.
+
+	  Enables -march=sandybridge
+
+config MIVYBRIDGE
+	bool "Intel Ivy Bridge"
+	help
+
+	  Select this for 3rd Gen Core processors in the Ivy Bridge family.
+
+	  Enables -march=ivybridge
+
+config MHASWELL
+	bool "Intel Haswell"
+	help
+
+	  Select this for 4th Gen Core processors in the Haswell family.
+
+	  Enables -march=haswell
+
+config MBROADWELL
+	bool "Intel Broadwell"
+	help
+
+	  Select this for 5th Gen Core processors in the Broadwell family.
+
+	  Enables -march=broadwell
+
+config MSKYLAKE
+	bool "Intel Skylake"
+	help
+
+	  Select this for 6th Gen Core processors in the Skylake family.
+
+	  Enables -march=skylake
+
+config MSKYLAKEX
+	bool "Intel Skylake X"
+	help
+
+	  Select this for 6th Gen Core processors in the Skylake X family.
+
+	  Enables -march=skylake-avx512
+
+config MCANNONLAKE
+	bool "Intel Cannon Lake"
+	help
+
+	  Select this for 8th Gen Core processors
+
+	  Enables -march=cannonlake
+
+config MICELAKE
+	bool "Intel Ice Lake"
+	help
+
+	  Select this for 10th Gen Core processors in the Ice Lake family.
+
+	  Enables -march=icelake-client
+
+config MCASCADELAKE
+	bool "Intel Cascade Lake"
+	help
+
+	  Select this for Xeon processors in the Cascade Lake family.
+
+	  Enables -march=cascadelake
+
+config MCOOPERLAKE
+	bool "Intel Cooper Lake"
+	depends on (CC_IS_GCC && GCC_VERSION > 100100) || (CC_IS_CLANG && CLANG_VERSION >= 100000)
+	help
+
+	  Select this for Xeon processors in the Cooper Lake family.
+
+	  Enables -march=cooperlake
+
+config MTIGERLAKE
+	bool "Intel Tiger Lake"
+	depends on  (CC_IS_GCC && GCC_VERSION > 100100) || (CC_IS_CLANG && CLANG_VERSION >= 100000)
+	help
+
+	  Select this for third-generation 10 nm process processors in the Tiger Lake family.
+
+	  Enables -march=tigerlake
+
+config MSAPPHIRERAPIDS
+	bool "Intel Sapphire Rapids"
+	depends on (CC_IS_GCC && GCC_VERSION > 110000) || (CC_IS_CLANG && CLANG_VERSION >= 120000)
+	help
+
+	  Select this for fourth-generation 10 nm process processors in the Sapphire Rapids family.
+
+	  Enables -march=sapphirerapids
+
+config MROCKETLAKE
+	bool "Intel Rocket Lake"
+	depends on (CC_IS_GCC && GCC_VERSION > 110000) || (CC_IS_CLANG && CLANG_VERSION >= 120000)
+	help
+
+	  Select this for eleventh-generation processors in the Rocket Lake family.
+
+	  Enables -march=rocketlake
+
+config MALDERLAKE
+	bool "Intel Alder Lake"
+	depends on (CC_IS_GCC && GCC_VERSION > 110000) || (CC_IS_CLANG && CLANG_VERSION >= 120000)
+	help
+
+	  Select this for twelfth-generation processors in the Alder Lake family.
+
+	  Enables -march=alderlake
+
+config MRAPTORLAKE
+	bool "Intel Raptor Lake"
+	depends on (CC_IS_GCC && GCC_VERSION >= 130000) || (CC_IS_CLANG && CLANG_VERSION >= 150500)
+	help
+
+	  Select this for thirteenth-generation processors in the Raptor Lake family.
+
+	  Enables -march=raptorlake
+
+config MMETEORLAKE
+	bool "Intel Meteor Lake"
+	depends on (CC_IS_GCC && GCC_VERSION >= 130000) || (CC_IS_CLANG && CLANG_VERSION >= 150500)
+	help
+
+	  Select this for fourteenth-generation processors in the Meteor Lake family.
+
+	  Enables -march=meteorlake
+
+config MEMERALDRAPIDS
+	bool "Intel Emerald Rapids"
+	depends on (CC_IS_GCC && GCC_VERSION > 130000) || (CC_IS_CLANG && CLANG_VERSION >= 150500)
+	help
+
+	  Select this for fifth-generation 10 nm process processors in the Emerald Rapids family.
+
+	  Enables -march=emeraldrapids
+
 config GENERIC_CPU
 	bool "Generic-x86-64"
 	depends on X86_64
@@ -287,6 +572,26 @@ config GENERIC_CPU
 	  Generic x86-64 CPU.
 	  Run equally well on all x86-64 CPUs.

+config MNATIVE_INTEL
+	bool "Intel-Native optimizations autodetected by the compiler"
+	help
+
+	  Clang 3.8, GCC 4.2 and above support -march=native, which automatically detects
+	  the optimum settings to use based on your processor. Do NOT use this
+	  for AMD CPUs.  Intel Only!
+
+	  Enables -march=native
+
+config MNATIVE_AMD
+	bool "AMD-Native optimizations autodetected by the compiler"
+	help
+
+	  Clang 3.8, GCC 4.2 and above support -march=native, which automatically detects
+	  the optimum settings to use based on your processor. Do NOT use this
+	  for Intel CPUs.  AMD Only!
+
+	  Enables -march=native
+
 endchoice

 config X86_GENERIC
@@ -301,6 +606,30 @@ config X86_GENERIC
 	  This is really intended for distributors who need more
 	  generic optimizations.

+config X86_64_VERSION
+	int "x86-64 compiler ISA level"
+	range 1 3
+	depends on (CC_IS_GCC && GCC_VERSION > 110000) || (CC_IS_CLANG && CLANG_VERSION >= 120000)
+	depends on X86_64 && GENERIC_CPU
+	help
+	  Specify a specific x86-64 compiler ISA level.
+
+	  There are three x86-64 ISA levels that work on top of
+	  the x86-64 baseline, namely: x86-64-v2, x86-64-v3, and x86-64-v4.
+
+	  x86-64-v2 brings support for vector instructions up to Streaming SIMD
+	  Extensions 4.2 (SSE4.2) and Supplemental Streaming SIMD Extensions 3
+	  (SSSE3), the POPCNT instruction, and CMPXCHG16B.
+
+	  x86-64-v3 adds vector instructions up to AVX2, MOVBE, and additional
+	  bit-manipulation instructions.
+
+	  x86-64-v4 is not included since the kernel does not use AVX512 instructions
+
+	  You can find the best version for your CPU by running one of the following:
+	  /lib/ld-linux-x86-64.so.2 --help | grep supported
+	  /lib64/ld-linux-x86-64.so.2 --help | grep supported
+
 #
 # Define implied options from the CPU selection here
 config X86_INTERNODE_CACHE_SHIFT
@@ -311,8 +640,8 @@ config X86_INTERNODE_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 || M486 || MGEODEGX1
+	default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MJAGUAR || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MZEN2 || MZEN3 || MZEN4 || MZEN5 || MNEHALEM || MWESTMERE || MSILVERMONT || MGOLDMONT || MGOLDMONTPLUS || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL || MNATIVE_AMD
+	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
@@ -329,11 +658,11 @@ config X86_ALIGNMENT_16

 config X86_INTEL_USERCOPY
 	def_bool y
-	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
+	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2 || MNEHALEM || MWESTMERE || MSILVERMONT || MGOLDMONT || MGOLDMONTPLUS || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL

 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
+	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM || MK8SSE3 || MK10 || MBARCELONA || MBOBCAT || MJAGUAR || MBULLDOZER || MPILEDRIVER || MSTEAMROLLER || MEXCAVATOR || MZEN || MZEN2 || MZEN3 || MZEN4 || MZEN5 || MNEHALEM || MWESTMERE || MSILVERMONT || MGOLDMONT || MGOLDMONTPLUS || MSANDYBRIDGE || MIVYBRIDGE || MHASWELL || MBROADWELL || MSKYLAKE || MSKYLAKEX || MCANNONLAKE || MICELAKE || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL || MNATIVE_AMD

 config X86_USE_3DNOW
 	def_bool y
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4833dd7e2cc0..94cbefe670db 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -124,11 +124,57 @@ else

         cflags-$(CONFIG_MCORE2) += \
                 $(call cc-option,-march=core2,$(call cc-option,-mtune=generic))
-	cflags-$(CONFIG_MATOM) += $(call cc-option,-march=atom) \
-		$(call cc-option,-mtune=atom,$(call cc-option,-mtune=generic))
+       cflags-$(CONFIG_MATOM) += $(call cc-option,-march=bonnell) \
+                $(call cc-option,-mtune=bonnell,$(call cc-option,-mtune=generic))
         cflags-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=generic)
+        cflags-$(CONFIG_MK8)            += $(call cc-option,-march=k8)
+        cflags-$(CONFIG_MPSC)           += $(call cc-option,-march=nocona)
+        ifeq ($(CONFIG_X86_64_VERSION),1)
+                cflags-$(CONFIG_GENERIC_CPU)          += $(call cc-option,-mtune=generic)
+        else
+                cflags-$(CONFIG_GENERIC_CPU)          += $(call cc-option,-march=x86-64-v$(CONFIG_X86_64_VERSION))
+        endif
+        cflags-$(CONFIG_MK8SSE3)        += $(call cc-option,-march=k8-sse3)
+        cflags-$(CONFIG_MK10)           += $(call cc-option,-march=amdfam10)
+        cflags-$(CONFIG_MBARCELONA)     += $(call cc-option,-march=barcelona)
+        cflags-$(CONFIG_MBOBCAT)        += $(call cc-option,-march=btver1)
+        cflags-$(CONFIG_MJAGUAR)        += $(call cc-option,-march=btver2)
+        cflags-$(CONFIG_MBULLDOZER)     += $(call cc-option,-march=bdver1)
+        cflags-$(CONFIG_MPILEDRIVER)    += $(call cc-option,-march=bdver2,-mno-tbm)
+        cflags-$(CONFIG_MSTEAMROLLER)   += $(call cc-option,-march=bdver3,-mno-tbm)
+        cflags-$(CONFIG_MEXCAVATOR)     += $(call cc-option,-march=bdver4,-mno-tbm)
+        cflags-$(CONFIG_MZEN)           += $(call cc-option,-march=znver1)
+        cflags-$(CONFIG_MZEN2)          += $(call cc-option,-march=znver2)
+        cflags-$(CONFIG_MZEN3)          += $(call cc-option,-march=znver3)
+        cflags-$(CONFIG_MZEN4)          += $(call cc-option,-march=znver4)
+        cflags-$(CONFIG_MZEN5)          += $(call cc-option,-march=znver5)
+        cflags-$(CONFIG_MNATIVE_INTEL)  += $(call cc-option,-march=native)
+        cflags-$(CONFIG_MNATIVE_AMD)    += $(call cc-option,-march=native,-mno-tbm)
+        cflags-$(CONFIG_MNEHALEM)       += $(call cc-option,-march=nehalem)
+        cflags-$(CONFIG_MWESTMERE)      += $(call cc-option,-march=westmere)
+        cflags-$(CONFIG_MSILVERMONT)    += $(call cc-option,-march=silvermont)
+        cflags-$(CONFIG_MGOLDMONT)      += $(call cc-option,-march=goldmont)
+        cflags-$(CONFIG_MGOLDMONTPLUS)  += $(call cc-option,-march=goldmont-plus)
+        cflags-$(CONFIG_MSANDYBRIDGE)   += $(call cc-option,-march=sandybridge)
+        cflags-$(CONFIG_MIVYBRIDGE)     += $(call cc-option,-march=ivybridge)
+        cflags-$(CONFIG_MHASWELL)       += $(call cc-option,-march=haswell)
+        cflags-$(CONFIG_MBROADWELL)     += $(call cc-option,-march=broadwell)
+        cflags-$(CONFIG_MSKYLAKE)       += $(call cc-option,-march=skylake)
+        cflags-$(CONFIG_MSKYLAKEX)      += $(call cc-option,-march=skylake-avx512)
+        cflags-$(CONFIG_MCANNONLAKE)    += $(call cc-option,-march=cannonlake)
+        cflags-$(CONFIG_MICELAKE)       += $(call cc-option,-march=icelake-client)
+        cflags-$(CONFIG_MCASCADELAKE)   += $(call cc-option,-march=cascadelake)
+        cflags-$(CONFIG_MCOOPERLAKE)    += $(call cc-option,-march=cooperlake)
+        cflags-$(CONFIG_MTIGERLAKE)     += $(call cc-option,-march=tigerlake)
+        cflags-$(CONFIG_MSAPPHIRERAPIDS)+= $(call cc-option,-march=sapphirerapids)
+        cflags-$(CONFIG_MROCKETLAKE)    += $(call cc-option,-march=rocketlake)
+        cflags-$(CONFIG_MALDERLAKE)     += $(call cc-option,-march=alderlake)
+        cflags-$(CONFIG_MRAPTORLAKE)    += $(call cc-option,-march=raptorlake)
+        cflags-$(CONFIG_MMETEORLAKE)    += $(call cc-option,-march=meteorlake)
+        cflags-$(CONFIG_MEMERALDRAPIDS) += $(call cc-option,-march=emeraldrapids)
         KBUILD_CFLAGS += $(cflags-y)

+
         KBUILD_CFLAGS += -mno-red-zone
         KBUILD_CFLAGS += -mcmodel=kernel

--
2.46.2