release 6.16.3 (preliminary)
This commit is contained in:
@@ -1,10 +1,6 @@
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From 906ed24dfc7e1bbceacc087ba38aecfd22a9890b Mon Sep 17 00:00:00 2001
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From 6b1d270f55e3143bcb3ad914adf920774351a6b9 Mon Sep 17 00:00:00 2001
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From: graysky <therealgraysky AT proton DOT me>
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Date: Mon, 16 Sep 2024 14:47:03 -0400
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FEATURES
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This patch adds additional tunings via new x86-64 ISA levels and
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more micro-architecture options to the Linux kernel in three classes.
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Date: Mon, 18 Aug 2025 04:14:48 -0400
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1. New generic x86-64 ISA levels
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@@ -103,7 +99,7 @@ See the following experimental evidence supporting this statement:
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https://github.com/graysky2/kernel_compiler_patch?tab=readme-ov-file#benchmarks
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REQUIREMENTS
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linux version 6.1.79+
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linux version 6.16+
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gcc version >=9.0 or clang version >=9.0
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ACKNOWLEDGMENTS
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@@ -116,9 +112,9 @@ REFERENCES
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4. http://www.linuxforge.net/docs/linux/linux-gcc.php
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---
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arch/x86/Kconfig.cpu | 462 ++++++++++++++++++++++++++++++++++++++++++-
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arch/x86/Makefile | 222 +++++++++++++++++++++
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2 files changed, 675 insertions(+), 9 deletions(-)
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arch/x86/Kconfig.cpu | 427 ++++++++++++++++++++++++++++++++++++++++++-
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arch/x86/Makefile | 213 ++++++++++++++++++++-
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2 files changed, 631 insertions(+), 9 deletions(-)
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--- a/arch/x86/Kconfig.cpu
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+++ b/arch/x86/Kconfig.cpu
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@@ -163,38 +159,15 @@ REFERENCES
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config MK6
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bool "K6/K6-II/K6-III"
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@@ -245,6 +260,435 @@ config MATOM
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@@ -281,6 +296,402 @@ config X86_GENERIC
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This is really intended for distributors who need more
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generic optimizations.
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endchoice
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+config CC_HAS_MARCH_NATIVE
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+ # This flag might not be available in cross-compilers:
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+ def_bool $(cc-option, -march=native)
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+ # LLVM 18 has an easily triggered internal compiler error in core
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+ # networking code with '-march=native' on certain systems:
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+ # https://github.com/llvm/llvm-project/issues/72026
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+ # LLVM 19 introduces an optimization that resolves some high stack
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+ # usage warnings that only appear wth '-march=native'.
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+ depends on CC_IS_GCC || CLANG_VERSION >= 190100
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+
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+choice
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+ prompt "x86_64 Compiler Build Optimization"
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+ depends on !X86_NATIVE_CPU
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+ default GENERIC_CPU
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+
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+config X86_NATIVE_CPU
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+ bool "Build and optimize for local/native CPU"
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+ depends on X86_64
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+ depends on CC_HAS_MARCH_NATIVE
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+ help
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+ Optimize for the current CPU used to compile the kernel.
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+ Use this option if you intend to build the kernel for your
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+ local machine.
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+
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+ Note that such a kernel might not work optimally on a
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+ different x86 machine.
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+
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+ If unsure, say N.
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+
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+config GENERIC_CPU
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+ bool "Generic-x86-64"
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+ depends on X86_64
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@@ -202,26 +175,6 @@ REFERENCES
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+ Generic x86-64 CPU.
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+ Runs equally well on all x86-64 CPUs.
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+
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+config MNATIVE_INTEL
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+ bool "Intel-Native optimizations autodetected by the compiler"
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+ help
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+
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+ Clang 3.8, GCC 4.2 and above support -march=native, which automatically detects
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+ the optimum settings to use based on your processor. Do NOT use this
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+ for AMD CPUs. Intel Only!
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+
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+ Enables -march=native
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+
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+config MNATIVE_AMD
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+ bool "AMD-Native optimizations autodetected by the compiler"
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+ help
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+
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+ Clang 3.8, GCC 4.2 and above support -march=native, which automatically detects
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+ the optimum settings to use based on your processor. Do NOT use this
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+ for Intel CPUs. AMD Only!
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+
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+ Enables -march=native
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+
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+config MK8
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+ bool "AMD Opteron/Athlon64/Hammer/K8"
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+ help
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@@ -445,20 +398,20 @@ REFERENCES
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+ Enables -march=skylake
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+
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+config MSKYLAKEX
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+ bool "Intel Skylake X"
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+ bool "Intel Skylake-X (7th Gen Core i7/i9)"
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+ depends on X86_64
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+ help
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+
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+ Select this for 6th Gen Core processors in the Skylake X family.
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+ Select this for 7th Gen Core i7/i9 processors in the Skylake-X family.
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+
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+ Enables -march=skylake-avx512
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+
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+config MCANNONLAKE
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+ bool "Intel Cannon Lake"
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+ bool "Intel Coffee Lake/Kaby Lake Refresh (8th Gen Core i3/i5/i7)"
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+ depends on X86_64
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+ help
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+
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+ Select this for 8th Gen Core processors
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+ Select this for 8th Gen Core i3/i5/i7 processors in the Coffee Lake or Kaby Lake Refresh families.
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+
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+ Enables -march=cannonlake
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+
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@@ -472,11 +425,11 @@ REFERENCES
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+ Enables -march=icelake-client
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+
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+config MICELAKE_SERVER
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+ bool "Intel Ice Lake Server"
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+ bool "Intel Ice Lake-SP (3rd Gen Xeon Scalable)"
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+ depends on X86_64
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+ help
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+
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+ Select this for 10th Gen Core server processors in the Ice Lake family.
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+ Select this for 3rd Gen Xeon Scalable processors in the Ice Lake-SP family.
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+
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+ Enables -march=icelake-server
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+
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@@ -566,10 +519,20 @@ REFERENCES
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+ depends on (CC_IS_GCC && GCC_VERSION > 130000) || (CC_IS_CLANG && CLANG_VERSION >= 150500)
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+ help
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+
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+ Select this for fifth-generation 10 nm process processors in the Emerald Rapids family.
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+ Select this for fifth-generation Xeon Scalable processors in the Emerald Rapids family.
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+
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+ Enables -march=emeraldrapids
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+
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+config MDIAMONDRAPIDS
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+ bool "Intel Diamond Rapids (7th Gen Xeon Scalable)"
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+ depends on X86_64
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+ depends on (CC_IS_GCC && GCC_VERSION > 150000) || (CC_IS_CLANG && CLANG_VERSION >= 200000)
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+ help
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+
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+ Select this for seventh-generation Xeon Scalable processors in the Diamond Rapids family.
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+
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+ Enables -march=diamondrapids
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+
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+endchoice
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+
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+config X86_64_VERSION
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@@ -596,31 +559,31 @@ REFERENCES
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+ /lib/ld-linux-x86-64.so.2 --help | grep supported
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+ /lib64/ld-linux-x86-64.so.2 --help | grep supported
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+
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config X86_GENERIC
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bool "Generic x86 support"
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depends on X86_32
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@@ -266,8 +710,8 @@ config X86_INTERNODE_CACHE_SHIFT
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#
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# Define implied options from the CPU selection here
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config X86_INTERNODE_CACHE_SHIFT
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@@ -290,8 +701,8 @@ config X86_INTERNODE_CACHE_SHIFT
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config X86_L1_CACHE_SHIFT
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int
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- default "7" if MPENTIUM4
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- default "6" if MK7 || MPENTIUMM || MATOM || MVIAC7 || X86_GENERIC || X86_64
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+ default "7" if MPENTIUM4 || MPSC
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL || MNATIVE_AMD
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MDIAMONDRAPIDS || X86_NATIVE_CPU
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default "4" if MELAN || M486SX || M486 || MGEODEGX1
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default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
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@@ -285,19 +729,19 @@ config X86_ALIGNMENT_16
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@@ -309,19 +720,19 @@ config X86_ALIGNMENT_16
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config X86_INTEL_USERCOPY
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def_bool y
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- depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK7 || MEFFICEON
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MDIAMONDRAPIDS
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config X86_USE_PPRO_CHECKSUM
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def_bool y
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- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MATOM
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MNATIVE_INTEL || MNATIVE_AMD
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+ 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_CLIENT || MICELAKE_SERVER || MCASCADELAKE || MCOOPERLAKE || MTIGERLAKE || MSAPPHIRERAPIDS || MROCKETLAKE || MALDERLAKE || MRAPTORLAKE || MMETEORLAKE || MEMERALDRAPIDS || MDIAMONDRAPIDS
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config X86_TSC
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def_bool y
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@@ -634,7 +597,7 @@ REFERENCES
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config X86_CX8
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def_bool y
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@@ -307,13 +751,13 @@ config X86_CX8
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@@ -331,12 +742,12 @@ config X86_CX8
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# generates cmov.
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config X86_CMOV
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def_bool y
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@@ -645,33 +608,16 @@ REFERENCES
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int
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default "64" if X86_64
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- default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MK7)
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- default "5" if X86_32 && X86_CX8
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+ default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCORE2 || MK7 || MK8)
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+ default "5" if X86_32 && X86_CMPXCHG64
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default "5" if X86_32 && X86_CX8
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default "4"
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config X86_DEBUGCTLMSR
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--- a/arch/x86/Makefile
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+++ b/arch/x86/Makefile
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@@ -173,8 +173,230 @@ else
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# Use -mskip-rax-setup if supported.
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KBUILD_CFLAGS += $(call cc-option,-mskip-rax-setup)
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+ifdef CONFIG_X86_NATIVE_CPU
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+ KBUILD_CFLAGS += -march=native
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=native
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+endif
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+
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+ifdef CONFIG_MNATIVE_INTEL
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+ KBUILD_CFLAGS += -march=native
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=native
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+endif
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+
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+ifdef CONFIG_MNATIVE_AMD
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+ KBUILD_CFLAGS += -march=native
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=native
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+endif
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+
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@@ -177,10 +177,221 @@ ifdef CONFIG_X86_NATIVE_CPU
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KBUILD_CFLAGS += -march=native
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KBUILD_RUSTFLAGS += -Ctarget-cpu=native
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else
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+ifdef CONFIG_MK8
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+ KBUILD_CFLAGS += -march=k8
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=k8
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@@ -872,6 +818,11 @@ REFERENCES
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=emeraldrapids
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+endif
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+
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+ifdef CONFIG_MDIAMONDRAPIDS
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+ KBUILD_CFLAGS += -march=diamondrapids
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=diamondrapids
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+endif
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+
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+ifdef CONFIG_GENERIC_CPU
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+ifeq ($(CONFIG_X86_64_VERSION),1)
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KBUILD_CFLAGS += -march=x86-64 -mtune=generic
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@@ -879,8 +830,10 @@ REFERENCES
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+else
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+ KBUILD_CFLAGS +=-march=x86-64-v$(CONFIG_X86_64_VERSION)
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+ KBUILD_RUSTFLAGS += -Ctarget-cpu=x86-64-v$(CONFIG_X86_64_VERSION)
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+endif # CONFIG_X86_64_VERSION
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+endif # CONFIG_GENERIC_CPU
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+endif
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+endif
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endif
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-
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KBUILD_CFLAGS += -mno-red-zone
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KBUILD_CFLAGS += -mcmodel=kernel
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KBUILD_RUSTFLAGS += -Cno-redzone=y
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Reference in New Issue
Block a user