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authorNathan Chancellor <nathan@kernel.org>2025-08-14 18:31:42 -0700
committerBorislav Petkov (AMD) <bp@alien8.de>2025-08-17 13:10:39 +0200
commit2c6a28f3ef729ed2d5b174b4e0f33172fb286bab (patch)
treeb6607e9747f59355185897ef0e2cb9be86845e16
parent337927d9895a800a63ffe852616ab05f5d304971 (diff)
downloadlinux-2c6a28f3ef729ed2d5b174b4e0f33172fb286bab.tar.gz
linux-2c6a28f3ef729ed2d5b174b4e0f33172fb286bab.zip
x86/Kconfig: Clean up LLVM version checks in IBT configurations
The minimum supported version of LLVM for building the x86 kernel was bumped to 15.0.0 in 7861640aac52 ("x86/build: Raise the minimum LLVM version to 15.0.0"), so the checks for Clang 14.0.0 and ld.lld 14.0.0 or newer will always been true. Clean them up. Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250814-x86-min-ver-cleanups-v1-6-ff7f19457523@kernel.org
-rw-r--r--arch/x86/Kconfig8
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 58d890fe2100..85b91267c01c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1753,11 +1753,7 @@ config X86_UMIP
config CC_HAS_IBT
# GCC >= 9 and binutils >= 2.29
# Retpoline check to work around https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93654
- # Clang/LLVM >= 14
- # https://github.com/llvm/llvm-project/commit/e0b89df2e0f0130881bf6c39bf31d7f6aac00e0f
- # https://github.com/llvm/llvm-project/commit/dfcf69770bc522b9e411c66454934a37c1f35332
- def_bool ((CC_IS_GCC && $(cc-option, -fcf-protection=branch -mindirect-branch-register)) || \
- (CC_IS_CLANG && CLANG_VERSION >= 140000)) && \
+ def_bool ((CC_IS_GCC && $(cc-option, -fcf-protection=branch -mindirect-branch-register)) || CC_IS_CLANG) && \
$(as-instr,endbr64)
config X86_CET
@@ -1769,8 +1765,6 @@ config X86_KERNEL_IBT
prompt "Indirect Branch Tracking"
def_bool y
depends on X86_64 && CC_HAS_IBT && HAVE_OBJTOOL
- # https://github.com/llvm/llvm-project/commit/9d7001eba9c4cb311e03cd8cdc231f9e579f2d0f
- depends on !LD_IS_LLD || LLD_VERSION >= 140000
select OBJTOOL
select X86_CET
help