Kbuild / Kconfig changes for 7.2

Kbuild: - Remove broken module linking exclusion for BTF - Add documentation around how offset header files work - Include unstripped vDSO libraries in pacman packages - Bump minimum version of LLVM for building the kernel to 17.0.1 and clean up unnecessary workarounds - Use a context manager in run-clang-tools - Add dist macro value if present to release tag for RPM packages - Detect and report truncated buf_printf() output in modpost - Add __llvm_covfun and __llvm_covmap to section whitelist in modpost - Support Clang's distributed ThinLTO mode - Remove architecture specific configurations for AutoFDO and Propeller to ease individual architecture maintenance Kconfig: - Add kconfig-sym-check target to look for dangling Kconfig symbol references and invalid tristate literal values - Harden against potential NULL pointer dereference - Fix typo in Kconfig test comment Signed-off-by: Nathan Chancellor <nathan@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQR74yXHMTGczQHYypIdayaRccAalgUCaijIpwAKCRAdayaRccAa lszAAQD0PuP+a0IejIyubuvEeB0ecG5nvKZIV99veIaivp9J4QD+PwYuPf+Y9A0r PqiV0IBrnhbmjNrSj8Clt2eHXqa4jg4= =J1xQ -----END PGP SIGNATURE----- Merge tag 'kbuild-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux Pull Kbuild / Kconfig updates from Nathan Chancellor: "Kbuild: - Remove broken module linking exclusion for BTF - Add documentation around how offset header files work - Include unstripped vDSO libraries in pacman packages - Bump minimum version of LLVM for building the kernel to 17.0.1 and clean up unnecessary workarounds - Use a context manager in run-clang-tools - Add dist macro value if present to release tag for RPM packages - Detect and report truncated buf_printf() output in modpost - Add __llvm_covfun and __llvm_covmap to section whitelist in modpost - Support Clang's distributed ThinLTO mode - Remove architecture specific configurations for AutoFDO and Propeller to ease individual architecture maintenance Kconfig: - Add kconfig-sym-check target to look for dangling Kconfig symbol references and invalid tristate literal values - Harden against potential NULL pointer dereference - Fix typo in Kconfig test comment" * tag 'kbuild-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (31 commits) kconfig: tests: fix typo in comment kconfig: Remove the architecture specific config for Propeller kconfig: Remove the architecture specific config for AutoFDO modpost: Add __llvm_covfun and __llvm_covmap to section_white_list kconfig: add kconfig-sym-check static checker kbuild: Remove unnecessary 'T' modifier in cmd_ar_builtin_fixup kbuild: distributed build support for Clang ThinLTO kbuild: move vmlinux.a build rule to scripts/Makefile.vmlinux_a scripts: modpost: detect and report truncated buf_printf() output kbuild: rpm-pkg: append %{?dist} macro to Release tag run-clang-tools: run multiprocessing.Pool as context manager compiler-clang.h: Drop explicit version number from "all" diagnostic macro compiler-clang.h: Remove __cleanup -Wunused-variable workaround kbuild: Remove check for broken scoping with clang < 17 in CC_HAS_ASM_GOTO_OUTPUT x86/entry/vdso32: Remove conditional omission of '.cfi_offset eflags' x86/module: Revert "Deal with GOT based stack cookie load on Clang < 17" x86/build: Drop unnecessary '-ffreestanding' addition to KBUILD_CFLAGS scripts/Makefile.warn: Drop -Wformat handling for clang < 16 riscv: Drop tautological condition from TOOLCHAIN_NEEDS_OLD_ISA_SPEC riscv: Remove tautological condition from selection of ARCH_SUPPORTS_CFI ...
2026-07-27 01:32:21 +02:00 · 2026-06-15 05:01:15 +05:30 · 2026-06-15 05:01:15 +05:30 · 73f399414a
commit 73f399414a
parent de02909ae8 1a1e62a5a4
35 changed files with 491 additions and 170 deletions
--- a/.gitignore
+++ b/.gitignore
@ -57,6 +57,7 @@
 *.zst
 Module.symvers
 dtbs-list
+builtin.order
 modules.order

 #
@ -68,6 +69,7 @@ modules.order
 /vmlinux.32
 /vmlinux.map
 /vmlinux.symvers
+/vmlinux.thinlto-index
 /vmlinux.unstripped
 /vmlinux-gdb.py
 /vmlinuz
--- a/Documentation/dev-tools/autofdo.rst
+++ b/Documentation/dev-tools/autofdo.rst
@ -61,6 +61,9 @@ process consists of the following steps:
   the AutoFDO profile via offline tools.

 The support requires a Clang compiler LLVM 17 or later.
+Current supported architectures include x86/x86_64 (via LBR) and
+arm64 (via SPE or ETM).
+

 Preparation
 ===========
@ -141,6 +144,35 @@ Here is an example workflow for AutoFDO kernel:

      $ perf record --pfm-events RETIRED_TAKEN_BRANCH_INSTRUCTIONS:k -a -N -b -c <count> -o <perf_file> -- <loadtest>

+   - For arm64 with SPE:
+
+     There are a few kernel features that must be enabled to collect SPE profiles on Arm.
+     Below is a list of the required features:
+
+      - CONFIG_ARM_SPE_PMU=y
+      - CONFIG_PID_IN_CONTEXTIDR=y
+      - kpti=off
+
+     Use the following command to generate SPE perf data file::
+
+      $ perf record -e ' arm_spe_0/branch_filter=1,load_filter=0,store_filter=0/'  -a -c <count> -N --no-switch-events -o <perf_file> -- <loadtest>
+
+   - For arm64 with ETM trace:
+
+     Follow the instructions in `Linaro OpenCSD document
+     <https://github.com/Linaro/OpenCSD/blob/master/decoder/tests/auto-fdo/autofdo.md>`_
+     to record ETM traces for AutoFDO::
+
+      $ perf record -e cs_etm/@tmc_etr0/k -a -o <etm_perf_file> -- <loadtest>
+      $ perf inject -i <etm_perf_file> -o <perf_file> --itrace=i500009il
+
+     For ARM platforms running Android, follow the instructions in `Android simpleperf
+     document <https://android.googlesource.com/kernel/common/+/refs/heads/android-mainline/gki/aarch64/afdo>`_
+     to record ETM traces for AutoFDO::
+
+      $ simpleperf record -e cs-etm:k -a -o <etm_perf_file> -- <loadtest>
+      $ simpleperf inject -i <etm_perf_file> -o <text_perf_file> --symdir <vmlinux_dir>
+
 4) (Optional) Download the raw perf file to the host machine.

 5) To generate an AutoFDO profile, two offline tools are available:
@ -162,6 +194,15 @@ Here is an example workflow for AutoFDO kernel:

      $ llvm-profdata merge -o <profile_file> <profile_1> <profile_2> ... <profile_n>

+   For arm64 SPE, use the following command::
+
+      $ create_llvm_prof --binary=<vmlinux> --profile=<perf_file> --profiler=perf_spe --format=extbinary --out=<profile_file>
+
+   For arm64 ETM, use the following command::
+
+      $ create_llvm_prof --binary=<vmlinux> --profile=<text_perf_file> --profiler=text -format=extbinary -out=<profile_file>
+
+
 6) Rebuild the kernel using the AutoFDO profile file with the same config as step 1,
   (Note CONFIG_AUTOFDO_CLANG needs to be enabled)::

--- a/Documentation/dev-tools/propeller.rst
+++ b/Documentation/dev-tools/propeller.rst
@ -28,8 +28,10 @@ A few important notes about adopting Propeller optimization:
   and the linker(ld.lld).

 #. In addition to LLVM toolchain, Propeller requires a profiling
-   conversion tool: https://github.com/google/autofdo with a release
-   after v0.30.1: https://github.com/google/autofdo/releases/tag/v0.30.1.
+   conversion tool: https://github.com/google/llvm-propeller.
+
+Current supported architectures include x86/X86_64 (via LBR),
+and arm64 (via SPE).

 The Propeller optimization process involves the following steps:

@ -124,17 +126,30 @@ Here is an example workflow for building an AutoFDO+Propeller kernel:

      $ perf record --pfm-event RETIRED_TAKEN_BRANCH_INSTRUCTIONS:k -a -N -b -c <count> -o <perf_file> -- <loadtest>

-   Note you can repeat the above steps to collect multiple <perf_file>s.
+   - For arm64 with SPE::
+     There are a few kernel features that must be enabled to collect SPE profiles on Arm.
+     Below is a list of the required features:
+
+      - CONFIG_ARM_SPE_PMU=y
+      - CONFIG_PID_IN_CONTEXTIDR=y
+      - kpti=off
+
+     Use the following command to generate SPE perf data file::
+
+      $ perf record -e 'arm_spe_0/branch_filter=1,load_filter=0,store_filter=0/' -a -N -c <count> --no-switch-events -o <perf_file> -- <loadtest>
+
+     Note you can repeat the above steps to collect multiple <perf_file>s.

 4) (Optional) Download the raw perf file(s) to the host machine.

-5) Use the create_llvm_prof tool (https://github.com/google/autofdo) to
+5) Use the generate_propeller_profiles tool (https://github.com/google/llvm-propeller) to
   generate Propeller profile. ::

-      $ create_llvm_prof --binary=<vmlinux> --profile=<perf_file>
-                         --format=propeller --propeller_output_module_name
-                         --out=<propeller_profile_prefix>_cc_profile.txt
-                         --propeller_symorder=<propeller_profile_prefix>_ld_profile.txt
+      $ generate_propeller_profiles \
+             --binary=<vmlinux> --profile=<perf_file> \
+             --format=propeller --propeller_output_module_name \
+             --out=<propeller_profile_prefix>_cc_profile.txt \
+             --propeller_symorder=<propeller_profile_prefix>_ld_profile.txt

   "<propeller_profile_prefix>" can be something like "/home/user/dir/any_string".

@ -146,10 +161,20 @@ Here is an example workflow for building an AutoFDO+Propeller kernel:
   you can create a temp list file "<perf_file_list>" with each line
   containing one perf file name and run::

-      $ create_llvm_prof --binary=<vmlinux> --profile=@<perf_file_list>
-                         --format=propeller --propeller_output_module_name
-                         --out=<propeller_profile_prefix>_cc_profile.txt
-                         --propeller_symorder=<propeller_profile_prefix>_ld_profile.txt
+      $ generate_propeller_profiles \
+             --binary=<vmlinux> --profile=@<perf_file_list> \
+             --format=propeller --propeller_output_module_name \
+             --out=<propeller_profile_prefix>_cc_profile.txt \
+             --propeller_symorder=<propeller_profile_prefix>_ld_profile.txt
+
+   For arm64 SPE, add the option '--profiler=perf_spe', like::
+
+      $ generate_propeller_profiles  \
+             --binary=<vmlinux> --profile=<perf_file> \
+             --profiler=perf_spe \
+             --format=propeller --propeller_output_module_name \
+             --out=<propeller_profile_prefix>_cc_profile.txt \
+             --propeller_symorder=<propeller_profile_prefix>_ld_profile.txt

 6) Rebuild the kernel using the AutoFDO and Propeller
   profiles. ::
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@ -1285,8 +1285,39 @@ Example::
 In this example, the file target maketools will be processed
 before descending down in the subdirectories.

-See also chapter XXX-TODO that describes how kbuild supports
-generating offset header files.
+Generating offset header files
+------------------------------
+
+The ``include/generated/asm-offsets.h`` header exposes C structure
+member offsets and other compile-time constants to assembly code. It
+is generated from ``arch/$(SRCARCH)/kernel/asm-offsets.c``.
+
+The source file uses ``DEFINE()``, ``OFFSET()``, ``BLANK()`` and
+``COMMENT()`` from ``<linux/kbuild.h>``. These emit marker strings
+through inline asm that Kbuild extracts from the compiled assembly
+output.
+
+Example::
+
+  #include <linux/kbuild.h>
+  #include <linux/sched.h>
+
+  int main(void)
+  {
+          OFFSET(TSK_ACTIVE_MM, task_struct, active_mm);
+          DEFINE(THREAD_SIZE, THREAD_SIZE);
+          BLANK();
+          return 0;
+  }
+
+The rules are defined in the top-level ``Kbuild`` and
+``scripts/Makefile.lib``. The header is built during Kbuild's
+``prepare`` phase, after ``archprepare`` and before descending into
+subdirectories.
+
+The same mechanism generates ``include/generated/bounds.h`` from
+``kernel/bounds.c`` and ``include/generated/rq-offsets.h`` from
+``kernel/sched/rq-offsets.c``.

 List directories to visit when descending
 -----------------------------------------
@ -1690,9 +1721,3 @@ Credits
 - Updates by Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
 - Updates by Sam Ravnborg <sam@ravnborg.org>
 - Language QA by Jan Engelhardt <jengelh@gmx.de>
-
-TODO
-====
-
- Generating offset header files.
- Add more variables to chapters 7 or 9?
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@ -36,7 +36,7 @@ bindgen (optional)     0.71.1           bindgen --version
 binutils               2.30             ld -v
 bison                  2.0              bison --version
 btrfs-progs            0.18             btrfs --version
-Clang/LLVM (optional)  15.0.0           clang --version
+Clang/LLVM (optional)  17.0.1           clang --version
 e2fsprogs              1.41.4           e2fsck -V
 flex                   2.5.35           flex --version
 gdb                    7.2              gdb --version
--- a/Documentation/translations/it_IT/process/changes.rst
+++ b/Documentation/translations/it_IT/process/changes.rst
@ -33,7 +33,7 @@ PC Card, per esempio, probabilmente non dovreste preoccuparvi di pcmciautils.
        Programma       Versione minima       Comando per verificare la versione
 ====================== =================  ========================================
 GNU C                  8.1                gcc --version
-Clang/LLVM (optional)  13.0.0             clang --version
+Clang/LLVM (optional)  17.0.1             clang --version
 Rust (opzionale)       1.78.0             rustc --version
 bindgen (opzionale)    0.65.1             bindgen --version
 GNU make               4.0                make --version
--- a/Documentation/translations/pt_BR/process/changes.rst
+++ b/Documentation/translations/pt_BR/process/changes.rst
@ -31,7 +31,7 @@ PC Card por exemplo, provavelmente não precisará se preocupar com o pcmciautil
        Programa        Versão mínima       Comando para verificar a versão
 ====================== ===============  ========================================
 GNU C                  8.1              gcc --version
-Clang/LLVM (optional)  15.0.0           clang --version
+Clang/LLVM (optional)  17.0.1           clang --version
 Rust (optional)        1.78.0           rustc --version
 bindgen (optional)     0.65.1           bindgen --version
 GNU make               4.0              make --version
--- a/55
+++ b/55
@ -293,6 +293,7 @@ version_h := include/generated/uapi/linux/version.h
 clean-targets := %clean mrproper cleandocs
 no-dot-config-targets := $(clean-targets) \
 			 cscope gtags TAGS tags help% %docs check% coccicheck \
+			 kconfig-sym-check \
 			 $(version_h) headers headers_% archheaders archscripts \
 			 %asm-generic kernelversion %src-pkg dt_binding_check \
 			 outputmakefile rustavailable rustfmt rustfmtcheck \
@ -1074,11 +1075,16 @@ export CC_FLAGS_SCS
 endif

 ifdef CONFIG_LTO_CLANG
-ifdef CONFIG_LTO_CLANG_THIN
-CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
-KBUILD_LDFLAGS += $(call ld-option,--lto-whole-program-visibility -mllvm -always-rename-promoted-locals=false)
-else
+ifdef CONFIG_LTO_CLANG_FULL
 CC_FLAGS_LTO	:= -flto
+else
+CC_FLAGS_LTO	:= -flto=thin -fsplit-lto-unit
+
+# These LLVM options were initially added with only in-process ThinLTO
+# support, so avoid distributed ThinLTO support for now.
+ifdef CONFIG_LTO_CLANG_THIN
+KBUILD_LDFLAGS += $(call ld-option,--lto-whole-program-visibility -mllvm -always-rename-promoted-locals=false)
+endif
 endif
 CC_FLAGS_LTO	+= -fvisibility=hidden

@ -1294,7 +1300,7 @@ export ARCH_DRIVERS	:= $(drivers-y) $(drivers-m)
 KBUILD_VMLINUX_OBJS := built-in.a $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
 KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))

-export KBUILD_VMLINUX_LIBS
+export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
 export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds

 ifdef CONFIG_TRIM_UNUSED_KSYMS
@ -1303,16 +1309,12 @@ ifdef CONFIG_TRIM_UNUSED_KSYMS
 KBUILD_MODULES := y
 endif

-# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14
-quiet_cmd_ar_vmlinux.a = AR      $@
-      cmd_ar_vmlinux.a = \
-	rm -f $@; \
-	$(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
-	$(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt)
+PHONY += vmlinux_a
+vmlinux_a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
+	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_a

-targets += vmlinux.a
-vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
-	$(call if_changed,ar_vmlinux.a)
+vmlinux.a: vmlinux_a
+	@:

 PHONY += vmlinux_o
 vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS)
@ -1691,6 +1693,7 @@ endif # CONFIG_MODULES
 CLEAN_FILES += vmlinux.symvers modules-only.symvers \
 	       modules.builtin modules.builtin.modinfo modules.nsdeps \
 	       modules.builtin.ranges vmlinux.o.map vmlinux.unstripped \
+	       vmlinux.thinlto-index builtin.order \
 	       compile_commands.json rust/test \
 	       rust-project.json .vmlinux.objs .vmlinux.export.c \
               .builtin-dtbs-list .builtin-dtbs.S
@ -1801,14 +1804,15 @@ help:
 	 echo  '                    (default: $(INSTALL_HDR_PATH))'; \
 	 echo  ''
 	@echo  'Static analysers:'
-	@echo  '  checkstack      - Generate a list of stack hogs and consider all functions'
-	@echo  '                    with a stack size larger than MINSTACKSIZE (default: 100)'
-	@echo  '  versioncheck    - Sanity check on version.h usage'
-	@echo  '  includecheck    - Check for duplicate included header files'
-	@echo  '  headerdep       - Detect inclusion cycles in headers'
-	@echo  '  coccicheck      - Check with Coccinelle'
-	@echo  '  clang-analyzer  - Check with clang static analyzer'
-	@echo  '  clang-tidy      - Check with clang-tidy'
+	@echo  '  checkstack        - Generate a list of stack hogs and consider all functions'
+	@echo  '                      with a stack size larger than MINSTACKSIZE (default: 100)'
+	@echo  '  versioncheck      - Sanity check on version.h usage'
+	@echo  '  includecheck      - Check for duplicate included header files'
+	@echo  '  headerdep         - Detect inclusion cycles in headers'
+	@echo  '  coccicheck        - Check with Coccinelle'
+	@echo  '  kconfig-sym-check - Check for dangling Kconfig symbol references'
+	@echo  '  clang-analyzer    - Check with clang static analyzer'
+	@echo  '  clang-tidy        - Check with clang-tidy'
 	@echo  ''
 	@echo  'Tools:'
 	@echo  '  nsdeps          - Generate missing symbol namespace dependencies'
@ -2152,7 +2156,7 @@ clean: $(clean-dirs)
 	$(call cmd,rmfiles)
 	@find . $(RCS_FIND_IGNORE) \
 		\( -name '*.[aios]' -o -name '*.rsi' -o -name '*.ko' -o -name '.*.cmd' \
-		-o -name '*.ko.*' \
+		-o -name '*.ko.*' -o -name '*.o.thinlto.bc' \
 		-o -name '*.dtb' -o -name '*.dtbo' \
 		-o -name '*.dtb.S' -o -name '*.dtbo.S' \
 		-o -name '*.dt.yaml' -o -name 'dtbs-list' \
@ -2228,7 +2232,7 @@ endif
 # Scripts to check various things for consistency
 # ---------------------------------------------------------------------------

-PHONY += includecheck versioncheck coccicheck
+PHONY += includecheck versioncheck coccicheck kconfig-sym-check

 includecheck:
 	find $(srctree)/* $(RCS_FIND_IGNORE) \
@ -2243,6 +2247,9 @@ versioncheck:
 coccicheck:
 	$(Q)$(BASH) $(srctree)/scripts/$@

+kconfig-sym-check:
+	$(Q)$(PERL) $(srctree)/scripts/kconfig/kconfig-sym-check.pl $(srctree) $(KCONFIG_SYM_CHECK_EXCLUDES)
+
 PHONY += checkstack kernelrelease kernelversion image_name

 # UML needs a little special treatment here.  It wants to use the host
--- a/arch/Kconfig
+++ b/arch/Kconfig
@ -806,9 +806,6 @@ config HAS_LTO_CLANG
 	depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm)
 	depends on ARCH_SUPPORTS_LTO_CLANG
 	depends on !FTRACE_MCOUNT_USE_RECORDMCOUNT
-	# https://github.com/ClangBuiltLinux/linux/issues/1721
-	depends on (!KASAN || KASAN_HW_TAGS || CLANG_VERSION >= 170000) || !DEBUG_INFO
-	depends on (!KCOV || CLANG_VERSION >= 170000) || !DEBUG_INFO
 	depends on !GCOV_KERNEL
 	help
 	  The compiler and Kconfig options support building with Clang's
@ -861,15 +858,30 @@ config LTO_CLANG_THIN
 	    https://clang.llvm.org/docs/ThinLTO.html

 	  If unsure, say Y.
-endchoice

-config ARCH_SUPPORTS_AUTOFDO_CLANG
-	bool
+config LTO_CLANG_THIN_DIST
+	bool "Clang ThinLTO in distributed mode (EXPERIMENTAL)"
+	depends on HAS_LTO_CLANG && ARCH_SUPPORTS_LTO_CLANG_THIN
+	select LTO_CLANG
+	help
+	  This option enables Clang's ThinLTO in distributed build mode.
+	  In this mode, the linker performs the thin-link, generating
+	  ThinLTO index files. Subsequently, the build system explicitly
+	  invokes ThinLTO backend compilation using these index files
+	  and pre-linked IR objects. The resulting native object files
+	  are with the .thinlto-native.o suffix.
+
+	  This build mode offers improved visibility into the ThinLTO
+	  process through explicit subcommand exposure. It also makes
+	  final native object files directly available, benefiting
+	  tools like objtool and kpatch. Additionally, it provides
+	  crucial granular control over back-end options, enabling
+	  module-specific compiler options, and simplifies debugging.
+endchoice

 config AUTOFDO_CLANG
 	bool "Enable Clang's AutoFDO build (EXPERIMENTAL)"
-	depends on ARCH_SUPPORTS_AUTOFDO_CLANG
-	depends on CC_IS_CLANG && CLANG_VERSION >= 170000
+	depends on CC_IS_CLANG
 	help
 	  This option enables Clang’s AutoFDO build. When
 	  an AutoFDO profile is specified in variable
@ -883,13 +895,10 @@ config AUTOFDO_CLANG

 	  If unsure, say N.

-config ARCH_SUPPORTS_PROPELLER_CLANG
-	bool
-
 config PROPELLER_CLANG
 	bool "Enable Clang's Propeller build"
-	depends on ARCH_SUPPORTS_PROPELLER_CLANG
 	depends on CC_IS_CLANG && CLANG_VERSION >= 190000
+	depends on $(cc-option,-fbasic-block-sections=list=/dev/null)
 	help
 	  This option enables Clang’s Propeller build. When the Propeller
 	  profiles is specified in variable CLANG_PROPELLER_PROFILE_PREFIX
--- a/arch/arm/Kconfig.platforms
+++ b/arch/arm/Kconfig.platforms
@ -8,16 +8,12 @@ comment "CPU Core family selection"
 config ARCH_MULTI_V4
 	bool "ARMv4 based platforms (FA526, StrongARM)"
 	depends on !ARCH_MULTI_V6_V7
-	# https://github.com/llvm/llvm-project/issues/50764
-	depends on !LD_IS_LLD || LLD_VERSION >= 160000
 	select ARCH_MULTI_V4_V5
 	select CPU_FA526 if !(CPU_SA110 || CPU_SA1100)

 config ARCH_MULTI_V4T
 	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
 	depends on !ARCH_MULTI_V6_V7
-	# https://github.com/llvm/llvm-project/issues/50764
-	depends on !LD_IS_LLD || LLD_VERSION >= 160000
 	select ARCH_MULTI_V4_V5
 	select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
 		CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@ -368,6 +368,7 @@ SECTIONS

 	STABS_DEBUG
 	DWARF_DEBUG
+	PROPELLER_DATA
 	MODINFO
 	ELF_DETAILS

--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@ -61,8 +61,7 @@ config RISCV
 	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
 	select ARCH_STACKWALK
 	select ARCH_SUPPORTS_ATOMIC_RMW
-	# clang >= 17: https://github.com/llvm/llvm-project/commit/62fa708ceb027713b386c7e0efda994f8bdc27e2
-	select ARCH_SUPPORTS_CFI if (!CC_IS_CLANG || CLANG_VERSION >= 170000)
+	select ARCH_SUPPORTS_CFI
 	select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU
 	select ARCH_SUPPORTS_HUGE_PFNMAP if TRANSPARENT_HUGEPAGE
 	select ARCH_SUPPORTS_HUGETLBFS if MMU
@ -874,19 +873,18 @@ config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
 	  and Zifencei are supported in binutils from version 2.36 onwards.
 	  To make life easier, and avoid forcing toolchains that default to a
 	  newer ISA spec to version 2.2, relax the check to binutils >= 2.36.
-	  For clang < 17 or GCC < 11.3.0, for which this is not possible or need
-	  special treatment, this is dealt with in TOOLCHAIN_NEEDS_OLD_ISA_SPEC.
+	  For GCC < 11.3.0, for which this is not possible or need special
+	  treatment, this is dealt with in TOOLCHAIN_NEEDS_OLD_ISA_SPEC.

 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
 	def_bool y
 	depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
-	# https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
 	# https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=d29f5d6ab513c52fd872f532c492e35ae9fd6671
-	depends on (CC_IS_CLANG && CLANG_VERSION < 170000) || (CC_IS_GCC && GCC_VERSION < 110300)
+	depends on CC_IS_GCC && GCC_VERSION < 110300
 	help
-	  Certain versions of clang and GCC do not support zicsr and zifencei via
-	  -march. This option causes an older ISA spec compatible with these older
-	  versions of clang and GCC to be passed to GAS, which has the same result
+	  Certain versions of GCC do not support zicsr and zifencei via -march.
+	  This option causes an older ISA spec compatible with these older
+	  versions of GCC to be passed to GAS, which has the same result
 	  as passing zicsr and zifencei to -march.

 config FPU
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@ -130,8 +130,6 @@ config X86
 	select ARCH_SUPPORTS_LTO_CLANG
 	select ARCH_SUPPORTS_LTO_CLANG_THIN
 	select ARCH_SUPPORTS_RT
-	select ARCH_SUPPORTS_AUTOFDO_CLANG
-	select ARCH_SUPPORTS_PROPELLER_CLANG    if X86_64
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF		if X86_CX8
 	select ARCH_USE_MEMTEST
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@ -128,11 +128,6 @@ ifeq ($(CONFIG_X86_32),y)
        include $(srctree)/arch/x86/Makefile_32.cpu
        KBUILD_CFLAGS += $(cflags-y)

-    ifneq ($(call clang-min-version, 160000),y)
-        # https://github.com/llvm/llvm-project/issues/53645
-        KBUILD_CFLAGS += -ffreestanding
-    endif
-
        percpu_seg := fs
 else
        BITS := 64
--- a/arch/x86/entry/vdso/vdso32/sigreturn.S
+++ b/arch/x86/entry/vdso/vdso32/sigreturn.S
@ -22,17 +22,7 @@
 	CFI_OFFSET	cs,     IA32_SIGCONTEXT_cs
 	CFI_OFFSET	ss,     IA32_SIGCONTEXT_ss
 	CFI_OFFSET	ds,     IA32_SIGCONTEXT_ds
-/*
- * .cfi_offset eflags requires LLVM 16 or newer:
- *
- *   https://github.com/llvm/llvm-project/commit/67bd3c58c0c7389e39c5a2f4d3b1a30459ccf5b7
- *
- * Check for 16.0.1 to ensure the support is present, as 16.0.0 may be a
- * prerelease version.
- */
-#if defined(CONFIG_AS_IS_GNU) || (defined(CONFIG_AS_IS_LLVM) && CONFIG_AS_VERSION >= 160001)
 	CFI_OFFSET	eflags, IA32_SIGCONTEXT_flags
-#endif
 .endm

 /*
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@ -54,9 +54,8 @@ typedef struct user_i387_struct elf_fpregset_t;
 #define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
 #define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
 #define R_X86_64_RELATIVE	8	/* Adjust by program base */
-#define R_X86_64_GOTPCREL	9	/* 32 bit signed pc relative offset to GOT */
-#define R_X86_64_GOTPCRELX	41
-#define R_X86_64_REX_GOTPCRELX	42
+#define R_X86_64_GOTPCREL	9	/* 32 bit signed pc relative
+					   offset to GOT */
 #define R_X86_64_32		10	/* Direct 32 bit zero extended */
 #define R_X86_64_32S		11	/* Direct 32 bit sign extended */
 #define R_X86_64_16		12	/* Direct 16 bit zero extended */
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@ -19,7 +19,6 @@
 #include <linux/jump_label.h>
 #include <linux/random.h>
 #include <linux/memory.h>
-#include <linux/stackprotector.h>

 #include <asm/text-patching.h>
 #include <asm/page.h>
@ -132,20 +131,6 @@ static int __write_relocate_add(Elf64_Shdr *sechdrs,
 				goto overflow;
 			size = 4;
 			break;
-#if defined(CONFIG_STACKPROTECTOR) && \
-    defined(CONFIG_CC_IS_CLANG) && CONFIG_CLANG_VERSION < 170000
-		case R_X86_64_REX_GOTPCRELX: {
-			static unsigned long __percpu *const addr = &__stack_chk_guard;
-
-			if (sym->st_value != (u64)addr) {
-				pr_err("%s: Unsupported GOTPCREL relocation\n", me->name);
-				return -ENOEXEC;
-			}
-
-			val = (u64)&addr + rel[i].r_addend;
-			fallthrough;
-		}
-#endif
 		case R_X86_64_PC32:
 		case R_X86_64_PLT32:
 			val -= (u64)loc;
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@ -423,10 +423,7 @@ SECTIONS

 	STABS_DEBUG
 	DWARF_DEBUG
-#ifdef CONFIG_PROPELLER_CLANG
-	.llvm_bb_addr_map : { *(.llvm_bb_addr_map) }
-#endif
-
+	PROPELLER_DATA
 	MODINFO
 	ELF_DETAILS

--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@ -1011,6 +1011,12 @@
 #define PERCPU_DECRYPTED_SECTION
 #endif

+#ifdef CONFIG_PROPELLER_CLANG
+#define PROPELLER_DATA                                                     \
+	.llvm_bb_addr_map : { *(.llvm_bb_addr_map) }
+#else
+#define PROPELLER_DATA
+#endif

 /*
 * Default discarded sections.
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@ -5,15 +5,6 @@

 /* Compiler specific definitions for Clang compiler */

-/*
- * Clang prior to 17 is being silly and considers many __cleanup() variables
- * as unused (because they are, their sole purpose is to go out of scope).
- *
- * https://github.com/llvm/llvm-project/commit/877210faa447f4cc7db87812f8ed80e398fedd61
- */
-#undef __cleanup
-#define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
-
 /* all clang versions usable with the kernel support KASAN ABI version 5 */
 #define KASAN_ABI_VERSION 5

@ -137,10 +128,10 @@
 #define __diag_clang_23(s)
 #endif

-#define __diag_clang_13(s)	__diag(s)
+#define __diag_clang_all(s)	__diag(s)

 #define __diag_ignore_all(option, comment) \
-	__diag_clang(13, ignore, option)
+	__diag_clang(all, ignore, option)

 /*
 * clang has horrible behavior with "g" or "rm" constraints for asm
--- a/init/Kconfig
+++ b/init/Kconfig
@ -118,10 +118,7 @@ config GCC_ASM_GOTO_OUTPUT_BROKEN
 config CC_HAS_ASM_GOTO_OUTPUT
 	def_bool y
 	depends on !GCC_ASM_GOTO_OUTPUT_BROKEN
-	# Detect basic support
 	depends on $(success,echo 'int foo(int x) { asm goto ("": "=r"(x) ::: bar); return x; bar: return 0; }' | $(CC) -x c - -c -o /dev/null)
-	# Detect clang (< v17) scoped label issues
-	depends on $(success,echo 'void b(void **);void* c(void);int f(void){{asm goto(""::::l0);return 0;l0:return 1;}void *x __attribute__((cleanup(b)))=c();{asm goto(""::::l1);return 2;l1:return 3;}}' | $(CC) -x c - -c -o /dev/null)

 config CC_HAS_ASM_GOTO_TIED_OUTPUT
 	depends on CC_HAS_ASM_GOTO_OUTPUT
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@ -249,6 +249,13 @@ ifdef CONFIG_LTO_CLANG
 cmd_ld_single = $(if $(objtool-enabled)$(is-single-obj-m), ; $(LD) $(ld_flags) -r -o $(tmp-target) $@; mv $(tmp-target) $@)
 endif

+ifdef CONFIG_LTO_CLANG_THIN_DIST
+# Save the _c_flags, sliently.
+quiet_cmd_save_c_flags =
+      saved_c_flags = $(_c_flags) $(modkern_cflags)
+      cmd_save_c_flags = printf '\n%s\n' 'saved_c_flags_$@ := $(call escsq,$(saved_c_flags))' >> $(dot-target).cmd
+endif
+
 quiet_cmd_cc_o_c = CC $(quiet_modtag)  $@
      cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< \
 		$(cmd_ld_single) \
@ -256,6 +263,7 @@ quiet_cmd_cc_o_c = CC $(quiet_modtag)  $@

 define rule_cc_o_c
 	$(call cmd_and_fixdep,cc_o_c)
+	$(call cmd,save_c_flags)
 	$(call cmd,checksrc)
 	$(call cmd,checkdoc)
 	$(call cmd,gen_objtooldep)
--- a/scripts/Makefile.modfinal
+++ b/scripts/Makefile.modfinal
@ -46,17 +46,9 @@ quiet_cmd_btf_ko = BTF [M] $@
 		$(CONFIG_SHELL) $(srctree)/scripts/gen-btf.sh --btf_base $(objtree)/vmlinux $@; \
 	fi;

-# Same as newer-prereqs, but allows to exclude specified extra dependencies
-newer_prereqs_except = $(filter-out $(PHONY) $(1),$?)
-
-# Same as if_changed, but allows to exclude specified extra dependencies
-if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check),      \
-	$(cmd);                                                              \
-	printf '%s\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
-
 # Re-generate module BTFs if either module's .ko or vmlinux changed
 %.ko: %.o %.mod.o .module-common.o $(objtree)/scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),$(objtree)/vmlinux) FORCE
-	+$(call if_changed_except,ld_ko_o,$(objtree)/vmlinux)
+	+$(call if_changed,ld_ko_o)
 ifdef CONFIG_DEBUG_INFO_BTF_MODULES
 	+$(if $(newer-prereqs),$(call cmd,btf_ko))
 endif
--- a/scripts/Makefile.thinlto
+++ b/scripts/Makefile.thinlto
@ -0,0 +1,40 @@
+PHONY := __default
+__default:
+
+include include/config/auto.conf
+include $(srctree)/scripts/Kbuild.include
+include $(srctree)/scripts/Makefile.lib
+
+native-objs := $(patsubst %.o,%.thinlto-native.o,$(call read-file, vmlinux.thinlto-index))
+
+__default: $(native-objs)
+
+# Generate .thinlto-native.o (obj) from .o (bitcode) and .thinlto.bc (summary) files
+# ---------------------------------------------------------------------------
+quiet_cmd_cc_o_bc = CC $(quiet_modtag)  $@
+      be_flags = $(shell sed -n '/saved_c_flags_/s/.*:= //p' \
+                $(dir $(<)).$(notdir $(<)).cmd)
+      cmd_cc_o_bc = \
+      $(CC) $(be_flags) -x ir -fno-lto -Wno-unused-command-line-argument \
+      -fthinlto-index=$(word 2, $^) -c -o $@ $<
+
+targets += $(native-objs)
+$(native-objs): %.thinlto-native.o: %.o %.o.thinlto.bc   FORCE
+	$(call if_changed,cc_o_bc)
+
+# Add FORCE to the prerequisites of a target to force it to be always rebuilt.
+# ---------------------------------------------------------------------------
+
+PHONY += FORCE
+FORCE:
+
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building above, using $(if_changed{,_dep}). As an
+# optimization, we don't need to read them if the target does not
+# exist, we will rebuild anyway in that case.
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f, $(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+
+.PHONY: $(PHONY)
--- a/scripts/Makefile.vmlinux_a
+++ b/scripts/Makefile.vmlinux_a
@ -0,0 +1,82 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+PHONY := __default
+__default: vmlinux.a
+
+include include/config/auto.conf
+include $(srctree)/scripts/Kbuild.include
+include $(srctree)/scripts/Makefile.lib
+
+# Link of built-in-fixup.a
+# ---------------------------------------------------------------------------
+
+quiet_cmd_ar_builtin_fixup = AR      $@
+      cmd_ar_builtin_fixup = \
+	rm -f $@; \
+	$(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
+	$(AR) mPi $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt)
+
+targets += built-in-fixup.a
+built-in-fixup.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE
+	$(call if_changed,ar_builtin_fixup)
+
+ifdef CONFIG_LTO_CLANG_THIN_DIST
+
+quiet_cmd_builtin.order = GEN     $@
+      cmd_builtin.order = $(AR) t $< > $@
+
+targets += builtin.order
+builtin.order: built-in-fixup.a FORCE
+	$(call if_changed,builtin.order)
+
+quiet_cmd_ld_thinlto_index = LD      $@
+      cmd_ld_thinlto_index = \
+	$(LD) $(KBUILD_LDFLAGS) -r --thinlto-index-only=$@ @$<
+
+targets += vmlinux.thinlto-index
+vmlinux.thinlto-index: builtin.order FORCE
+	$(call if_changed,ld_thinlto_index)
+
+quiet_cmd_ar_vmlinux.a = GEN     $@
+      cmd_ar_vmlinux.a =					\
+	rm -f $@;						\
+	while read -r obj; do					\
+		if grep -Fqx $${obj} $(word 2, $^); then	\
+			echo $${obj%.o}.thinlto-native.o;	\
+		else						\
+			echo $${obj};				\
+		fi;						\
+	done < $< | xargs $(AR) cDPrS --thin $@
+
+targets += vmlinux.a
+vmlinux.a: builtin.order vmlinux.thinlto-index FORCE
+	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.thinlto
+	$(call if_changed,ar_vmlinux.a)
+
+else
+
+# vmlinux.a
+# ---------------------------------------------------------------------------
+
+targets += vmlinux.a
+vmlinux.a: built-in-fixup.a FORCE
+	$(call if_changed,copy)
+
+endif
+
+# Add FORCE to the prerequisites of a target to force it to be always rebuilt.
+# ---------------------------------------------------------------------------
+
+PHONY += FORCE
+FORCE:
+
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building above, using $(if_changed{,_dep}). As an
+# optimization, we don't need to read them if the target does not
+# exist, we will rebuild anyway in that case.
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+
+.PHONY: $(PHONY)
--- a/scripts/Makefile.warn
+++ b/scripts/Makefile.warn
@ -135,16 +135,6 @@ KBUILD_CFLAGS += $(call cc-option, -Wno-stringop-truncation)
 KBUILD_CFLAGS += -Wno-override-init # alias for -Wno-initializer-overrides in clang

 ifdef CONFIG_CC_IS_CLANG
-# Clang before clang-16 would warn on default argument promotions.
-ifneq ($(call clang-min-version, 160000),y)
-# Disable -Wformat
-KBUILD_CFLAGS += -Wno-format
-# Then re-enable flags that were part of the -Wformat group that aren't
-# problematic.
-KBUILD_CFLAGS += -Wformat-extra-args -Wformat-invalid-specifier
-KBUILD_CFLAGS += -Wformat-zero-length -Wnonnull
-KBUILD_CFLAGS += -Wformat-insufficient-args
-endif
 KBUILD_CFLAGS += -Wno-pointer-to-enum-cast
 KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
 KBUILD_CFLAGS += -Wno-unaligned-access
--- a/scripts/clang-tools/run-clang-tools.py
+++ b/scripts/clang-tools/run-clang-tools.py
@ -79,14 +79,15 @@ def run_analysis(entry):


 def main():
-    try:
-        args = parse_arguments()
+    args = parse_arguments()

-        lock = multiprocessing.Lock()
-        pool = multiprocessing.Pool(initializer=init, initargs=(lock, args))
-        # Read JSON data into the datastore variable
-        with open(args.path, "r") as f:
-            datastore = json.load(f)
+    # Read JSON data into the datastore variable
+    with open(args.path) as f:
+        datastore = json.load(f)
+
+    lock = multiprocessing.Lock()
+    try:
+        with multiprocessing.Pool(initializer=init, initargs=(lock, args)) as pool:
            pool.map(run_analysis, datastore)
    except BrokenPipeError:
        # Python flushes standard streams on exit; redirect remaining output
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@ -297,9 +297,7 @@ static int conf_askvalue(struct symbol *sym, const char *def)
 	line[1] = 0;

 	if (!sym_is_changeable(sym)) {
-		printf("%s\n", def);
-		line[0] = '\n';
-		line[1] = 0;
+		printf("%s\n", def ?: "");
 		return 0;
 	}

@ -307,7 +305,7 @@ static int conf_askvalue(struct symbol *sym, const char *def)
 	case oldconfig:
 	case syncconfig:
 		if (sym_has_value(sym)) {
-			printf("%s\n", def);
+			printf("%s\n", def ?: "");
 			return 0;
 		}
 		/* fall through */
--- a/scripts/kconfig/kconfig-sym-check.pl
+++ b/scripts/kconfig/kconfig-sym-check.pl
@ -0,0 +1,132 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+
+use warnings;
+use strict;
+
+my $srctree = shift @ARGV;
+unless (defined $srctree) {
+	$srctree = `git rev-parse --show-toplevel 2>/dev/null`;
+	chomp $srctree;
+	my $msg = "Usage: $0 <srctree> [excludes file]\n";
+	$msg .= "Please provide <srctree>.";
+	$msg .= " Is it '$srctree'?" if $srctree;
+	$msg .= "\n";
+	die $msg;
+}
+my $kconfig_sym_check_excludes = defined $ARGV[0] ? $ARGV[0] : undef;
+
+sub indent_depth {
+	my ($ws) = @_;
+	my $col = 0;
+	for my $c (split //, $ws) {
+		$col = $c eq "\t" ? int($col / 8) * 8 + 8 : $col + 1;
+	}
+	return $col;
+}
+
+my @files = `git -C \Q$srctree\E ls-files '*Kconfig*' 2>/dev/null`;
+if (@files) {
+	chomp @files;
+	@files = map { "$srctree/$_" } @files;
+} else {
+	@files = `find \Q$srctree\E -name '*Kconfig*'`;
+	chomp @files;
+}
+
+@files = grep { !m{/scripts/kconfig/tests/} } @files;
+
+my %configs = ();
+my %refs = ();
+
+foreach my $file (@files) {
+	open F, $file or die "Cannot open $file: $!";
+
+	my $help = 0;
+	my $help_level;
+	my $level;
+
+	while (<F>) {
+		chomp;
+
+		while (/\\\s*$/) {
+			s/\\\s*$/ /;
+			my $cont = <F> // last;
+			chomp $cont;
+			$_ .= $cont;
+		}
+
+		next if /^\s*$/;
+		next if /^\s*#/;
+
+		/^(\s*)/;
+		$level = indent_depth($1);
+
+		if ($help && $level < $help_level) {
+			$help = 0;
+		}
+
+		next if ($help);
+
+		if (/^\s*(help|\-\-\-help\-\-\-)$/) {
+			$help = 1;
+			my $next;
+			while (defined($next = <F>)) {
+				last unless $next =~ /^\s*(?:#.*)?$/;
+			}
+			last unless defined $next;
+			$next =~ /^(\s*)/;
+			if (indent_depth($1) >= $level) {
+				$help_level = indent_depth($1);
+			} else {
+				$help = 0;
+			}
+			$_ = $next;
+			redo;
+		}
+
+		if (/^\s*(config|menuconfig)\s+([a-zA-Z0-9_]+)\s*(#.*)?$/) {
+			$configs{$2}++;
+			next;
+		}
+
+		if (/^\s*(default|def_bool|def_tristate|select|depends\s+on|imply|visible\s+if|range|if|bool|tristate|int|hex|string|prompt)\s+(.+)\s*$/) {
+			my $s = $2;
+			$s =~ s/"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*'//g;
+			$s =~ s/#.*//;
+			$s =~ s/\$\((?:[^()]*|\((?:[^()]*|\([^()]*\))*\))*\)//g;
+			$s =~ s/%%[^%]*%%//g;
+			my @syms = split /[^a-zA-Z0-9_]+/, $s;
+			map {
+				$refs{$_}++ if (/[a-zA-Z]/ && $_ ne "if" && $_ ne "y" && $_ ne "n" && $_ ne "m" && !/^0[xX][0-9a-fA-F]+$/);
+			} @syms
+		}
+	}
+
+	close F;
+}
+
+my %known_syms = ();
+if (defined $kconfig_sym_check_excludes) {
+	my $file = $kconfig_sym_check_excludes;
+	open(F, "<", $file) or die "Cannot open $file: $!";
+	while (<F>) {
+		chomp;
+		next if /^\s*$/;
+		next if /^\s*#/;
+		$known_syms{$1}++ if (/^\s*([a-zA-Z0-9_]+)\s*(#.*)?$/);
+	}
+}
+
+my $ret = 0;
+foreach my $k (sort keys %refs) {
+	next if (exists $configs{$k} || exists $known_syms{$k});
+
+	print "$k";
+	print " - warning: '$k' is probably not what you want; Kconfig tristate literals are always lowercase ('n', 'y', 'm')" if ($k eq "N" || $k eq "Y" || $k eq "M");
+	print "\n";
+
+	$ret = 1;
+}
+
+exit $ret;
--- a/scripts/kconfig/tests/no_write_if_dep_unmet/init.py
+++ b/scripts/kconfig/tests/no_write_if_dep_unmet/init.py
@ -8,7 +8,7 @@ for symbols with unmet dependency.
 This was not working correctly for choice values because choice needs
 a bit different symbol computation.

-This checks that no unneeded "# COFIG_... is not set" is contained in
+This checks that no unneeded "# CONFIG_... is not set" is contained in
 the .config file.

 Related Linux commit: cb67ab2cd2b8abd9650292c986c79901e3073a59
--- a/scripts/min-tool-version.sh
+++ b/scripts/min-tool-version.sh
@ -27,7 +27,7 @@ llvm)
 	if [ "$SRCARCH" = loongarch ]; then
 		echo 18.0.0
 	else
-		echo 15.0.0
+		echo 17.0.1
 	fi
 	;;
 rustc)
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@ -765,6 +765,8 @@ static const char *const section_white_list[] =
 	".gnu.lto*",
 	".discard.*",
 	".llvm.call-graph-profile",	/* call graph */
+	"__llvm_covfun",
+	"__llvm_covmap",
 	NULL
 };

@ -1487,13 +1489,22 @@ static void extract_crcs_for_object(const char *object, struct module *mod)
 	char cmd_file[PATH_MAX];
 	char *buf, *p;
 	const char *base;
-	int dirlen, ret;
+	int dirlen, baselen_without_suffix, ret;

 	base = get_basename(object);
 	dirlen = base - object;

-	ret = snprintf(cmd_file, sizeof(cmd_file), "%.*s.%s.cmd",
-		       dirlen, object, base);
+	baselen_without_suffix = strlen(object) - dirlen - strlen(".o");
+
+	/*
+	 * When CONFIG_LTO_CLANG_THIN_DIST=y, the ELF is *.thinlto-native.o
+	 * but the symbol CRCs are recorded in *.o.cmd file.
+	 */
+	if (strends(object, ".thinlto-native.o"))
+		baselen_without_suffix -= strlen(".thinlto-native");
+
+	ret = snprintf(cmd_file, sizeof(cmd_file), "%.*s.%.*s.o.cmd",
+		       dirlen, object, baselen_without_suffix, base);
 	if (ret >= sizeof(cmd_file)) {
 		error("%s: too long path was truncated\n", cmd_file);
 		return;
@ -1689,8 +1700,17 @@ void __attribute__((format(printf, 2, 3))) buf_printf(struct buffer *buf,

 	va_start(ap, fmt);
 	len = vsnprintf(tmp, SZ, fmt, ap);
-	buf_write(buf, tmp, len);
 	va_end(ap);
+
+	if (len < 0) {
+		perror("vsnprintf failed");
+		exit(1);
+	}
+	if (len >= SZ)
+		fatal("buf_printf output truncated for string %s: %d bytes needed, %d available\n",
+		      tmp, len + 1, SZ);
+
+	buf_write(buf, tmp, len);
 }

 void buf_write(struct buffer *buf, const char *s, int len)
--- a/scripts/package/PKGBUILD
+++ b/scripts/package/PKGBUILD
@ -121,6 +121,9 @@ _package-debug(){
 	install -Dt "${debugdir}" -m644 vmlinux
 	mkdir -p "${builddir}"
 	ln -sr "${debugdir}/vmlinux" "${builddir}/vmlinux"
+
+	echo "Installing unstripped vDSO(s)..."
+	${MAKE} INSTALL_MOD_PATH="${pkgdir}/usr" vdso_install
 }

 for _p in "${pkgname[@]}"; do
--- a/scripts/package/kernel.spec
+++ b/scripts/package/kernel.spec
@ -6,7 +6,7 @@
 Name: kernel
 Summary: The Linux Kernel
 Version: %(echo %{KERNELRELEASE} | sed -e 's/-/_/g')
-Release: %{pkg_release}
+Release: %{pkg_release}%{?dist}
 License: GPL
 Group: System Environment/Kernel
 Vendor: The Linux Community
--- a/security/Kconfig.hardening
+++ b/security/Kconfig.hardening
@ -188,10 +188,8 @@ config INIT_ON_FREE_DEFAULT_ON
 	  synthetic workloads have measured as high as 8%.

 config CC_HAS_ZERO_CALL_USED_REGS
+	# supported by gcc-11 or newer and all supported versions of clang
 	def_bool $(cc-option,-fzero-call-used-regs=used-gpr)
-	# https://github.com/ClangBuiltLinux/linux/issues/1766
-	# https://github.com/llvm/llvm-project/issues/59242
-	depends on !CC_IS_CLANG || CLANG_VERSION > 150006

 config ZERO_CALL_USED_REGS
 	bool "Enable register zeroing on function exit"
@ -216,8 +214,6 @@ menu "Bounds checking"
 config FORTIFY_SOURCE
 	bool "Harden common str/mem functions against buffer overflows"
 	depends on ARCH_HAS_FORTIFY_SOURCE
-	# https://github.com/llvm/llvm-project/issues/53645
-	depends on !X86_32 || !CC_IS_CLANG || CLANG_VERSION >= 160000
 	help
 	  Detect overflows of buffers in common string and memory functions
 	  where the compiler can determine and validate the buffer sizes.
@ -279,9 +275,6 @@ endmenu

 config CC_HAS_RANDSTRUCT
 	def_bool $(cc-option,-frandomize-layout-seed-file=/dev/null)
-	# Randstruct was first added in Clang 15, but it isn't safe to use until
-	# Clang 16 due to https://github.com/llvm/llvm-project/issues/60349
-	depends on !CC_IS_CLANG || CLANG_VERSION >= 160000

 choice
 	prompt "Randomize layout of sensitive kernel structures"