[PATCH 0/2] RISC-V: Fix CONFIG_AS_HAS_OPTION_ARCH with tip of tree LLVM

[Masahiro Yamada]

On Tue, Jan 30, 2024 at 1:34 AM Conor Dooley <conor at kernel.org> wrote:
>
> On Thu, Jan 25, 2024 at 10:32:10AM -0700, Nathan Chancellor wrote:
> > Hi all,
> >
> > 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.
> >
> > I think this could go in through either the kbuild or RISC-V tree with
> > sufficient acks but I will let them fight over who takes it :)
>
> I think RISC-V would be good, since building the vector crypto stuff
> also needs this fix.


OK, then I will give ack instead of applying this series.


Acked-by: Masahiro Yamada <masahiroy at kernel.org>






> Tested-by: Conor Dooley <conor.dooley at microchip.com>
> Reviewed-by: Conor Dooley <conor.dooley at microchip.com>









-- 
Best Regards
Masahiro Yamada