[PATCH v5 13/13] treewide: Stop defining __ASSEMBLY_

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* [PATCH v5 13/13] treewide: Stop defining __ASSEMBLY__ for assembler files
       [not found] <20261023064908.66707-1-thuth@redhat.com>
@ 2026-10-23  6:48 ` Thomas Huth
  0 siblings, 0 replies; only message in thread
From: Thomas Huth @ 2026-10-23  6:48 UTC (permalink / raw)
  To: Arnd Bergmann, Nathan Chancellor, Nicolas Schier,
	Richard Henderson, Matt Turner, Magnus Lindholm, Catalin Marinas,
	Will Deacon, Huacai Chen, Thomas Bogendoerfer,
	Madhavan Srinivasan, Heiko Carstens, Vasily Gorbik,
	Alexander Gordeev, Thomas Gleixner, Ingo Molnar, Borislav Petkov,
	Dave Hansen, x86, Chris Zankel, Max Filippov, Ard Biesheuvel,
	Andrew Lunn, David S. Miller, Eric Dumazet, Jakub Kicinski,
	Paolo Abeni, Luis Augenstein, Maximilian Huber, Anup Patel,
	Paolo Bonzini, Shuah Khan, Paul Walmsley, Palmer Dabbelt,
	Albert Ou, Andy Lutomirski, Vincenzo Frascino
  Cc: soc, linux-kernel, linux-kbuild, Thomas Weißschuh,
	Mark Rutland, WANG Xuerui, Michael Ellerman, Nicholas Piggin,
	Christophe Leroy (CS GROUP), Ritesh Harjani (IBM),
	Shrikanth Hegde, Christian Borntraeger, Sven Schnelle,
	H. Peter Anvin, Ilias Apalodimas, Atish Patra,
	Sean Christopherson, Alexandre Ghiti, Nick Desaulniers,
	Bill Wendling, Justin Stitt, linux-alpha, linux-arm-kernel,
	loongarch, linux-mips, linuxppc-dev, linux-s390, linux-efi,
	netdev, kvm, kvm-riscv, linux-riscv, linux-kselftest, llvm

All spots have been changed to __ASSEMBLER__ (i.e. the macro that
gets defined by the compiler), so we don't have to manually define
__ASSEMBLY__ anymore.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 Makefile                                             | 2 +-
 arch/alpha/boot/compressed/Makefile                  | 2 +-
 arch/arm64/kernel/vdso32/Makefile                    | 1 -
 arch/loongarch/vdso/Makefile                         | 2 +-
 arch/mips/boot/compressed/Makefile                   | 2 +-
 arch/mips/vdso/Makefile                              | 2 +-
 arch/powerpc/boot/Makefile                           | 2 +-
 arch/powerpc/platforms/cell/spufs/Makefile           | 2 +-
 arch/s390/Makefile                                   | 2 +-
 arch/x86/boot/Makefile                               | 2 +-
 arch/x86/boot/compressed/Makefile                    | 2 +-
 arch/x86/realmode/rm/Makefile                        | 2 +-
 arch/xtensa/kernel/Makefile                          | 2 +-
 drivers/firmware/efi/libstub/Makefile                | 2 +-
 drivers/net/wan/Makefile                             | 2 +-
 scripts/Makefile.build                               | 2 +-
 scripts/gfp-translate                                | 2 +-
 scripts/headers_install.sh                           | 1 -
 scripts/sbom/tests/cmd_graph/test_savedcmd_parser.py | 2 +-
 tools/testing/selftests/kvm/lib/riscv/handlers.S     | 4 ----
 tools/testing/selftests/vDSO/vgetrandom-chacha.S     | 2 --
 21 files changed, 17 insertions(+), 25 deletions(-)

diff --git a/Makefile b/Makefile
index 0319cd716d73b..98bffdd9cf2d6 100644
--- a/Makefile
+++ b/Makefile
@@ -606,7 +606,7 @@ LINUXINCLUDE    := \
 		-I$(objtree)/include \
 		$(USERINCLUDE)
 
-KBUILD_AFLAGS   := -D__ASSEMBLY__ -fno-PIE
+KBUILD_AFLAGS   := -fno-PIE
 
 KBUILD_CFLAGS :=
 KBUILD_CFLAGS += -fshort-wchar
diff --git a/arch/alpha/boot/compressed/Makefile b/arch/alpha/boot/compressed/Makefile
index eb930f01b4be4..16119a13e53a3 100644
--- a/arch/alpha/boot/compressed/Makefile
+++ b/arch/alpha/boot/compressed/Makefile
@@ -22,7 +22,7 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 KBUILD_CFLAGS += -pipe -mcpu=ev4 -mno-fp-regs -ffixed-8
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING -D__DISABLE_EXPORTS
 KBUILD_CFLAGS += $(CC_FLAGS_DIALECT)
-KBUILD_AFLAGS := -D__ASSEMBLY__ $(KBUILD_CFLAGS)
+KBUILD_AFLAGS := $(KBUILD_CFLAGS)
 
 # The stub has no sanitizer or coverage runtime. arch/alpha/lib/lib.a is
 # built with the kernel's instrumentation and -mcpu=, so build private
diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile
index 00efdc5d23543..0ba0b4bb3e013 100644
--- a/arch/arm64/kernel/vdso32/Makefile
+++ b/arch/arm64/kernel/vdso32/Makefile
@@ -77,7 +77,6 @@ VDSO_CFLAGS += -marm
 endif
 
 VDSO_AFLAGS := $(VDSO_CAFLAGS)
-VDSO_AFLAGS += -D__ASSEMBLY__
 
 # From arm vDSO Makefile
 VDSO_LDFLAGS += -Bsymbolic --no-undefined -soname=linux-vdso.so.1
diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile
index 0b84892d084b6..c2b73fd3781c0 100644
--- a/arch/loongarch/vdso/Makefile
+++ b/arch/loongarch/vdso/Makefile
@@ -32,7 +32,7 @@ cflags-vdso := $(ccflags-vdso) \
 	$(call cc-option, -fasynchronous-unwind-tables) \
 	$(call cc-option, -fno-stack-protector)
 aflags-vdso := $(ccflags-vdso) \
-	-D__ASSEMBLY__ -Wa,-gdwarf-2
+	-Wa,-gdwarf-2
 
 ifneq ($(c-gettimeofday-y),)
   CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index 2684540758a8d..3e3803b2db48f 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -30,7 +30,7 @@ endif
 KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \
 	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
 
-KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
+KBUILD_AFLAGS := $(KBUILD_AFLAGS) \
 	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
 	-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
 
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index 00d3ba2c482ac..4d04987e995de 100644
--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -33,7 +33,7 @@ cflags-vdso := $(ccflags-vdso) \
 	-fno-stack-protector -fno-jump-tables -DDISABLE_BRANCH_PROFILING \
 	$(call cc-option, -fno-asynchronous-unwind-tables)
 aflags-vdso := $(ccflags-vdso) \
-	-D__ASSEMBLY__ -Wa,-gdwarf-2
+	-Wa,-gdwarf-2
 
 ifneq ($(c-gettimeofday-y),)
 obj-vdso-y += vgettimeofday.o
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 7ee0fa2d3371e..5dca91ec9f4aa 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -80,7 +80,7 @@ BOOTCFLAGS	:= $(BOOTTARGETFLAGS) \
 		   $(call cc-option,-mno-spe) $(call cc-option,-mspe=no) \
 		   -fomit-frame-pointer -fno-builtin -fPIC
 
-BOOTAFLAGS	:= $(BOOTTARGETFLAGS) -D__ASSEMBLY__
+BOOTAFLAGS	:= $(BOOTTARGETFLAGS)
 
 BOOTARFLAGS	:= -crD
 
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index 60319d4ff25a6..959617c4ee89c 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -15,7 +15,7 @@ SPU_AS		:= $(SPU_CROSS)gcc
 SPU_LD		:= $(SPU_CROSS)ld
 SPU_OBJCOPY	:= $(SPU_CROSS)objcopy
 SPU_CFLAGS	:= -O2 -Wall -I$(srctree)/include -D__KERNEL__
-SPU_AFLAGS	:= -c -D__ASSEMBLY__ -I$(srctree)/include -D__KERNEL__
+SPU_AFLAGS	:= -c -I$(srctree)/include -D__KERNEL__
 SPU_LDFLAGS	:= -N -Ttext=0x0
 
 $(obj)/switch.o: $(obj)/spu_save_dump.h $(obj)/spu_restore_dump.h
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 8b712cd85fcd3..83ecc702f7146 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -17,7 +17,7 @@ KBUILD_CFLAGS	+= -fPIC
 LDFLAGS_vmlinux	:= $(call ld-option,-no-pie)
 extra_tools	:= relocs
 aflags_dwarf	:= -Wa,-gdwarf-2
-KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
+KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64
 ifndef CONFIG_AS_IS_LLVM
 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
 endif
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 4a9bce32586d3..69d75072888d1 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -52,7 +52,7 @@ targets += cpustr.h
 # ---------------------------------------------------------------------------
 
 KBUILD_CFLAGS	:= $(REALMODE_CFLAGS) -D_SETUP
-KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
+KBUILD_AFLAGS	:= $(KBUILD_CFLAGS)
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
 KBUILD_CFLAGS	+= $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
 
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 680ad803cba7d..e73ef522496e1 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -49,7 +49,7 @@ KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
 # that the compiler finds it even with out-of-tree builds (make O=/some/path).
 CFLAGS_sev-handle-vc.o += -I$(objtree)/arch/x86/lib/
 
-KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+KBUILD_AFLAGS  := $(KBUILD_CFLAGS)
 
 KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE)
 KBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info)
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
index a0fb39abc5c86..20bbe1af05acd 100644
--- a/arch/x86/realmode/rm/Makefile
+++ b/arch/x86/realmode/rm/Makefile
@@ -65,5 +65,5 @@ $(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
 
 KBUILD_CFLAGS	:= $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \
 		   -I$(srctree)/arch/x86/boot
-KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
+KBUILD_AFLAGS	:= $(KBUILD_CFLAGS)
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index d3ef0407401f6..ece4ae6dea97d 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -39,7 +39,7 @@ sed-y = -e ':a; s/\*(\([^)]*\)\.text\.unlikely/*(\1.literal.unlikely .{text}.unl
 	-e 's/\.{text}/.text/g'
 
 quiet_cmd__cpp_lds_S = LDS     $@
-cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa -D__ASSEMBLY__ \
+cmd__cpp_lds_S = $(CPP) $(cpp_flags) -P -C -Uxtensa \
 		 -DLINKER_SCRIPT $< | sed $(sed-y) >$@
 
 $(obj)/vmlinux.lds: $(src)/vmlinux.lds.S FORCE
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 415f63105b481..d4edc3c0c4556 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -61,7 +61,7 @@ KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))
 # `-fdata-sections` flag from KBUILD_CFLAGS_KERNEL
 KBUILD_CFLAGS_KERNEL := $(filter-out -fdata-sections, $(KBUILD_CFLAGS_KERNEL))
 
-KBUILD_AFLAGS			:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
+KBUILD_AFLAGS			:= $(KBUILD_CFLAGS)
 
 lib-y				:= efi-stub-helper.o gop.o secureboot.o tpm.o \
 				   file.o mem.o random.o randomalloc.o pci.o \
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index 00e9b7ee1e012..4233143534465 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -57,7 +57,7 @@ $(obj)/wanxlfw.bin: $(obj)/wanxlfw.o FORCE
 	$(call if_changed,m68kld_bin_o)
 
 quiet_cmd_m68kas_o_S = M68KAS  $@
-      cmd_m68kas_o_S = $(M68KCC) -D__ASSEMBLY__ -Wp,-MD,$(depfile) -I$(srctree)/include/uapi -c -o $@ $<
+      cmd_m68kas_o_S = $(M68KCC) -Wp,-MD,$(depfile) -I$(srctree)/include/uapi -c -o $@ $<
 
 $(obj)/wanxlfw.o: $(src)/wanxlfw.S FORCE
 	$(call if_changed_dep,m68kas_o_S)
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 6127feb970c65..0b7c1e273f0cb 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -465,7 +465,7 @@ targets += $(lib-y) $(always-y)
 # ---------------------------------------------------------------------------
 quiet_cmd_cpp_lds_S = LDS     $@
       cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -U$(ARCH) \
-	                     -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<
+	                     -DLINKER_SCRIPT -o $@ $<
 
 $(obj)/%.lds: $(src)/%.lds.S FORCE
 	$(call if_changed_dep,cpp_lds_S)
diff --git a/scripts/gfp-translate b/scripts/gfp-translate
index 8385ae0d5af93..f6353795fdca3 100755
--- a/scripts/gfp-translate
+++ b/scripts/gfp-translate
@@ -73,7 +73,7 @@ echo Parsing: $GFPMASK
 #include <stdio.h>
 
 // Try to fool compiler.h into not including extra stuff
-#define __ASSEMBLY__	1
+#define __ASSEMBLER__	1
 
 #include <generated/autoconf.h>
 #include <linux/gfp_types.h>
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index 2f1d1767ca267..9c15e748761c4 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -36,7 +36,6 @@ sed -E -e '
 	s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g
 	s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g
 	s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @
-	s/__ASSEMBLY__/__ASSEMBLER__/g
 ' $INFILE > $TMPFILE || exit 1
 
 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE
diff --git a/scripts/sbom/tests/cmd_graph/test_savedcmd_parser.py b/scripts/sbom/tests/cmd_graph/test_savedcmd_parser.py
index 93787a1cd1566..8d9ae35764040 100644
--- a/scripts/sbom/tests/cmd_graph/test_savedcmd_parser.py
+++ b/scripts/sbom/tests/cmd_graph/test_savedcmd_parser.py
@@ -152,7 +152,7 @@ class TestSavedCmdParser(unittest.TestCase):
         self._assert_parsing(cmd, expected)
 
     def test_clang(self):
-        cmd = """clang -Wp,-MMD,arch/x86/entry/.entry_64_compat.o.d -nostdinc -I../arch/x86/include -I./arch/x86/include/generated -I../include -I./include -I../arch/x86/include/uapi -I./arch/x86/include/generated/uapi -I../include/uapi -I./include/generated/uapi -include ../include/linux/compiler-version.h -include ../include/linux/kconfig.h -D__KERNEL__ --target=x86_64-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -fmacro-prefix-map=../= -Werror -D__ASSEMBLY__ -fno-PIE -m64 -I../arch/x86/entry -Iarch/x86/entry    -DKBUILD_MODFILE='"arch/x86/entry/entry_64_compat"' -DKBUILD_MODNAME='"entry_64_compat"' -D__KBUILD_MODNAME=kmod_entry_64_compat -c -o arch/x86/entry/entry_64_compat.o ../arch/x86/entry/entry_64_compat.S"""
+        cmd = """clang -Wp,-MMD,arch/x86/entry/.entry_64_compat.o.d -nostdinc -I../arch/x86/include -I./arch/x86/include/generated -I../include -I./include -I../arch/x86/include/uapi -I./arch/x86/include/generated/uapi -I../include/uapi -I./include/generated/uapi -include ../include/linux/compiler-version.h -include ../include/linux/kconfig.h -D__KERNEL__ --target=x86_64-linux-gnu -fintegrated-as -Werror=unknown-warning-option -Werror=ignored-optimization-argument -Werror=option-ignored -Werror=unused-command-line-argument -fmacro-prefix-map=../= -Werror -fno-PIE -m64 -I../arch/x86/entry -Iarch/x86/entry    -DKBUILD_MODFILE='"arch/x86/entry/entry_64_compat"' -DKBUILD_MODNAME='"entry_64_compat"' -D__KBUILD_MODNAME=kmod_entry_64_compat -c -o arch/x86/entry/entry_64_compat.o ../arch/x86/entry/entry_64_compat.S"""
         expected = "../arch/x86/entry/entry_64_compat.S"
         self._assert_parsing(cmd, expected)
 
diff --git a/tools/testing/selftests/kvm/lib/riscv/handlers.S b/tools/testing/selftests/kvm/lib/riscv/handlers.S
index b787b982e922a..c8cc2d695f483 100644
--- a/tools/testing/selftests/kvm/lib/riscv/handlers.S
+++ b/tools/testing/selftests/kvm/lib/riscv/handlers.S
@@ -3,10 +3,6 @@
  * Copyright (c) 2023 Intel Corporation
  */
 
-#ifndef __ASSEMBLY__
-#define __ASSEMBLY__
-#endif
-
 #include <asm/csr.h>
 
 .macro save_context
diff --git a/tools/testing/selftests/vDSO/vgetrandom-chacha.S b/tools/testing/selftests/vDSO/vgetrandom-chacha.S
index 16f985b089d45..42839c5cf5ec4 100644
--- a/tools/testing/selftests/vDSO/vgetrandom-chacha.S
+++ b/tools/testing/selftests/vDSO/vgetrandom-chacha.S
@@ -3,8 +3,6 @@
  * Copyright (C) 2024 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
-#define __ASSEMBLY__
-
 #if defined(__aarch64__)
 #include "../../../../arch/arm64/kernel/vdso/vgetrandom-chacha.S"
 #elif defined(__loongarch__)
-- 
2.56.0


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2026-10-23  6:48 ` [PATCH v5 13/13] treewide: Stop defining __ASSEMBLY__ for assembler files Thomas Huth

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