Re: [PATCH v2 2/7] MIPS: Add toolchain feature dependency for microMIPS smartMIPS

From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>,
	llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>,
	Borislav Petkov <bp@alien8.de>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	Masahiro Yamada <masahiroy@kernel.org>
Subject: Re: [PATCH v2 2/7] MIPS: Add toolchain feature dependency for microMIPS smartMIPS
Date: Thu, 20 Apr 2023 20:41:07 +0100	[thread overview]
Message-ID: <77F56166-265A-4653-ADF4-B0057604A539@flygoat.com> (raw)
In-Reply-To: <CAKwvOd=ye9jA0-3QRpD76waZCSX=ayFeE2ZNAPPM-fLdyCq1FQ@mail.gmail.com>

> 2023年4月20日 00:01，Nick Desaulniers <ndesaulniers@google.com> 写道：
> 
> On Tue, Apr 18, 2023 at 6:13 AM Thomas Bogendoerfer
> <tsbogend@alpha.franken.de> wrote:
>> 
>> On Fri, Apr 14, 2023 at 09:06:56AM +0100, Jiaxun Yang wrote:
>>> microMIPS smartMIPS kernel can only be compiled if they are supported
>>> by toolchain.
>>> 
>>> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
>>> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
> 
> Question: won't the lack of this (patch and rest of the series) hurt
> our ability to test randconfig builds of ARCH=mips with clang? See
> also the 0day report from Boris:
> https://lore.kernel.org/llvm/202304170748.Fg9VIgGd-lkp@intel.com/

Kconfig experts, Is there any way to generate warning based on Kconfig options?
So we can let users know there are something went wrong but still allow build to happen.

Thanks
- Jiaxun 

> 
> i.e. randconfig will continue to select options that can't be built yet.
> 
> -- 
> Thanks,
> ~Nick Desaulniers