[PATCH 09/14] riscv: Drop tautological condition from TOOLCHAIN_NEEDS_OLD_ISA_SPEC

Nathan Chancellor
2026-04-29T03:00:33Z

Now that the minimum supported version of LLVM for building the kernel
has been raised to 17.0.1, the Clang dependency part of
CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC is always false, so it can be
removed. Adjust the help text to remove mention of Clang < 17, as it is
irrelevant for the kernel after the minimum supported bump.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: linux-riscv@lists.infradead.org
---
arch/riscv/Kconfig | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 7ffbf6032b61..c742c42fd39b 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -873,19 +873,18 @@ config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
and Zifencei are supported in binutils from version 2.36 onwards.
To make life easier, and avoid forcing toolchains that default to a
newer ISA spec to version 2.2, relax the check to binutils >= 2.36.
- For clang < 17 or GCC < 11.3.0, for which this is not possible or need
- special treatment, this is dealt with in TOOLCHAIN_NEEDS_OLD_ISA_SPEC.
+ For GCC < 11.3.0, for which this is not possible or need special
+ treatment, this is dealt with in TOOLCHAIN_NEEDS_OLD_ISA_SPEC.

config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
def_bool y
depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
- # https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
# https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=d29f5d6ab513c52fd872f532c492e35ae9fd6671
- depends on (CC_IS_CLANG && CLANG_VERSION < 170000) || (CC_IS_GCC && GCC_VERSION < 110300)
+ depends on CC_IS_GCC && GCC_VERSION < 110300
help
- Certain versions of clang and GCC do not support zicsr and zifencei via
- -march. This option causes an older ISA spec compatible with these older
- versions of clang and GCC to be passed to GAS, which has the same result
+ Certain versions of GCC do not support zicsr and zifencei via -march.
+ This option causes an older ISA spec compatible with these older
+ versions of GCC to be passed to GAS, which has the same result
as passing zicsr and zifencei to -march.

config FPU

--
2.54.0