From: Nathan Chancellor <nathan@kernel.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Nicolas Schier <nsc@kernel.org>, Bill Wendling <morbo@google.com>,
Justin Stitt <justinstitt@google.com>,
Nick Desaulniers <nick.desaulniers+lkml@gmail.com>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
linux-kbuild@vger.kernel.org, Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
linux-hardening@vger.kernel.org,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH v2 02/16] security/Kconfig.hardening: Remove tautological condition from CC_HAS_ZERO_CALL_USED_REGS
Date: Mon, 18 May 2026 14:05:52 -0700 [thread overview]
Message-ID: <20260518210552.GA3979157@ax162> (raw)
In-Reply-To: <55186588-0cff-4908-923a-d5611707a3b0@app.fastmail.com>
On Mon, May 18, 2026 at 09:48:47AM +0200, Arnd Bergmann wrote:
> On Mon, May 18, 2026, at 01:05, Nathan Chancellor wrote:
> > Now that the minimum supported version of LLVM for building the kernel
> > has been raised to 17.0.1, the '!Clang || Clang > 15.0.6' dependency for
> > CONFIG_CC_HAS_ZERO_CALL_USED_REGS is always true, so it can be removed.
> >
> > Reviewed-by: Nicolas Schier <nsc@kernel.org>
> > Signed-off-by: Nathan Chancellor <nathan@kernel.org>
>
> Acked-by: Arnd Bergmann <arnd@arndb.de>
Thanks for taking a look!
> > config CC_HAS_ZERO_CALL_USED_REGS
> > 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
> >
>
> Maybe add a comment to mention that this now requires gcc-11,
> that way we have it easier to remove the check when that becomes
> the minimum version.
Sure, I can add
# supported by gcc-11 or newer and all supported versions of clang
when I apply it.
--
Cheers,
Nathan
next prev parent reply other threads:[~2026-05-18 21:05 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-17 23:05 [PATCH v2 00/16] Bump minimum version of LLVM for building the kernel to 17.0.1 Nathan Chancellor
2026-05-17 23:05 ` Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 01/16] kbuild: " Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 02/16] security/Kconfig.hardening: Remove tautological condition from CC_HAS_ZERO_CALL_USED_REGS Nathan Chancellor
2026-05-18 7:48 ` Arnd Bergmann
2026-05-18 21:05 ` Nathan Chancellor [this message]
2026-05-17 23:05 ` [PATCH v2 03/16] security/Kconfig.hardening: Remove tautological condition from FORTIFY_SOURCE Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 04/16] security/Kconfig.hardening: Remove tautological condition from CC_HAS_RANDSTRUCT Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 05/16] arch/Kconfig: Remove tautological conditions from HAS_LTO_CLANG Nathan Chancellor
2026-05-18 7:56 ` Arnd Bergmann
2026-05-18 21:36 ` Nathan Chancellor
2026-05-19 15:43 ` Sami Tolvanen
2026-05-17 23:05 ` [PATCH v2 06/16] arch/Kconfig: Remove tautological condition from AUTOFDO_CLANG Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 07/16] ARM: Drop tautological ld.lld conditions from ARCH_MULTI_V4{,T} Nathan Chancellor
2026-05-18 7:59 ` Arnd Bergmann
2026-05-17 23:05 ` [PATCH v2 08/16] riscv: Remove tautological condition from selection of ARCH_SUPPORTS_CFI Nathan Chancellor
2026-05-17 23:05 ` Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 09/16] riscv: Drop tautological condition from TOOLCHAIN_NEEDS_OLD_ISA_SPEC Nathan Chancellor
2026-05-17 23:05 ` Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 10/16] scripts/Makefile.warn: Drop -Wformat handling for clang < 16 Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 11/16] x86/build: Drop unnecessary '-ffreestanding' addition to KBUILD_CFLAGS Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 12/16] x86/module: Revert "Deal with GOT based stack cookie load on Clang < 17" Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 13/16] x86/entry/vdso32: Remove conditional omission of '.cfi_offset eflags' Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 14/16] kbuild: Remove check for broken scoping with clang < 17 in CC_HAS_ASM_GOTO_OUTPUT Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 15/16] compiler-clang.h: Remove __cleanup -Wunused-variable workaround Nathan Chancellor
2026-05-17 23:05 ` [PATCH v2 16/16] compiler-clang.h: Drop explicit version number from "all" diagnostic macro Nathan Chancellor
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