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| author | Nick Desaulniers <ndesaulniers@google.com> | 2022-08-19 12:06:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-21 10:06:28 -0700 |
| commit | a0a12c3ed057af57552bf6c0aeaca6835693df04 (patch) | |
| tree | cf05961f6278ab64839aa82f161e41ceda669c06 /arch/x86/Makefile | |
| parent | 15b3f48a4339e3c16acf18624e2b7f60bc5e9a2c (diff) | |
| download | lwn-a0a12c3ed057af57552bf6c0aeaca6835693df04.tar.gz lwn-a0a12c3ed057af57552bf6c0aeaca6835693df04.zip | |
asm goto: eradicate CC_HAS_ASM_GOTO
GCC has supported asm goto since 4.5, and Clang has since version 9.0.0.
The minimum supported versions of these tools for the build according to
Documentation/process/changes.rst are 5.1 and 11.0.0 respectively.
Remove the feature detection script, Kconfig option, and clean up some
fallback code that is no longer supported.
The removed script was also testing for a GCC specific bug that was
fixed in the 4.7 release.
Also remove workarounds for bpftrace using clang older than 9.0.0, since
other BPF backend fixes are required at this point.
Link: https://lore.kernel.org/lkml/CAK7LNATSr=BXKfkdW8f-H5VT_w=xBpT2ZQcZ7rm6JfkdE+QnmA@mail.gmail.com/
Link: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48637
Acked-by: Borislav Petkov <bp@suse.de>
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/Makefile')
| -rw-r--r-- | arch/x86/Makefile | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 7854685c5f25..bafbd905e6e7 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -286,10 +286,6 @@ vdso_install: archprepare: checkbin checkbin: -ifndef CONFIG_CC_HAS_ASM_GOTO - @echo Compiler lacks asm-goto support. - @exit 1 -endif ifdef CONFIG_RETPOLINE ifeq ($(RETPOLINE_CFLAGS),) @echo "You are building kernel with non-retpoline compiler." >&2 |