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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2024-02-16 16:07:10 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-02-21 15:07:41 -0800 |
| commit | 58506612bf023f03ab73a7237c09e1618b66b399 (patch) | |
| tree | 338c77bea61d8fc01e690f52f025694940d97c93 /arch | |
| parent | 3951f6add519a8e954bf78691a412f65b24f4715 (diff) | |
| parent | 3aff0c459e77ac0fb1c4d6884433467f797f7357 (diff) | |
Merge patch series "RISC-V: Fix CONFIG_AS_HAS_OPTION_ARCH with tip of tree LLVM"
Nathan Chancellor <nathan@kernel.org> says:
Eric reported that builds of LLVM with [1] (close to tip of tree) have
CONFIG_AS_HAS_OPTION_ARCH=n because the test for expected failure on
invalid input has started succeeding.
This Kconfig test was added because '.option arch' only causes an
assembler warning when it is unsupported, rather than a hard error,
which is what users of as-instr expect when something is unsupported.
This can be resolved by turning assembler warnings into errors with
'-Wa,--fatal-warnings' like we do with the compiler with '-Werror',
which is what the first patch does. The second patch removes the invalid
test, as the valid test is good enough with fatal warnings.
I have diffed several configurations for the different architectures
that use as-instr and I have found no issues.
[1]: https://github.com/llvm/llvm-project/commit/3ac9fe69f70a2b3541266daedbaaa7dc9c007a2a
* b4-shazam-merge:
RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH
kbuild: Add -Wa,--fatal-warnings to as-instr invocation
Link: https://lore.kernel.org/r/20240125-fix-riscv-option-arch-llvm-18-v1-0-390ac9cc3cd0@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/Kconfig | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bffbd869a068..e3142ce531a0 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -315,7 +315,6 @@ config AS_HAS_OPTION_ARCH # https://reviews.llvm.org/D123515 def_bool y depends on $(as-instr, .option arch$(comma) +m) - depends on !$(as-instr, .option arch$(comma) -i) source "arch/riscv/Kconfig.socs" source "arch/riscv/Kconfig.errata" |