linux-kernel - [tip: x86/asm] x86/build: Raise the minimum LLVM version to 15.0.0

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Message-ID: <174014380628.10177.1455453395562694018.tip-bot2@tip-bot2>
Date: Fri, 21 Feb 2025 13:16:46 -0000
From: "tip-bot2 for Nathan Chancellor" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Nathan Chancellor <nathan@...nel.org>, Ingo Molnar <mingo@...nel.org>,
 Linus Torvalds <torvalds@...ux-foundation.org>,
 Ard Biesheuvel <ardb@...nel.org>, Brian Gerst <brgerst@...il.com>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/asm] x86/build: Raise the minimum LLVM version to 15.0.0

The following commit has been merged into the x86/asm branch of tip:

Commit-ID:     7861640aac52bbbb3dc2cd40fb93dfb3b3d0f43c
Gitweb:        https://git.kernel.org/tip/7861640aac52bbbb3dc2cd40fb93dfb3b3d0f43c
Author:        Nathan Chancellor <nathan@...nel.org>
AuthorDate:    Thu, 20 Feb 2025 13:08:12 -07:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 21 Feb 2025 14:08:16 +01:00

x86/build: Raise the minimum LLVM version to 15.0.0

In a similar vein as to this pending commit in the x86/asm tree:

  a3e8fe814ad1 ("x86/build: Raise the minimum GCC version to 8.1")

... bump the minimum supported version of LLVM for building x86 kernels
to 15.0.0, as that is the first version that has support for
'-mstack-protector-guard-symbol', which is used unconditionally after:

  80d47defddc0 ("x86/stackprotector/64: Convert to normal per-CPU variable"):

Older Clang versions will fail the build with:

  clang-14: error: unknown argument: '-mstack-protector-guard-symbol=__ref_stack_chk_guard'

Fixes: 80d47defddc0 ("x86/stackprotector/64: Convert to normal per-CPU variable")
Signed-off-by: Nathan Chancellor <nathan@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Reviewed-by: Ard Biesheuvel <ardb@...nel.org>
Reviewed-by: Brian Gerst <brgerst@...il.com>
Link: https://lore.kernel.org/r/20250220-x86-bump-min-llvm-for-stackp-v1-1-ecb3c906e790@kernel.org
---
 scripts/min-tool-version.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh
index 06c4e41..7878681 100755
--- a/scripts/min-tool-version.sh
+++ b/scripts/min-tool-version.sh
@@ -26,7 +26,7 @@ gcc)
 	fi
 	;;
 llvm)
-	if [ "$SRCARCH" = s390 ]; then
+	if [ "$SRCARCH" = s390 -o "$SRCARCH" = x86 ]; then
 		echo 15.0.0
 	elif [ "$SRCARCH" = loongarch ]; then
 		echo 18.0.0