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Date: Mon, 19 Jun 2023 09:51:44 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: sashal@kernel.org, ndesaulniers@google.com, naresh.kamboju@linaro.org,
	stable@vger.kernel.org, llvm@lists.linux.dev,
	Masahiro Yamada <masahiroy@kernel.org>,
	Linux Kernel Functional Testing <lkft@linaro.org>,
	Anders Roxell <anders.roxell@linaro.org>, tsbogend@alpha.franken.de,
	linux-mips@vger.kernel.org,
	Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= <philmd@linaro.org>
Subject: Re: [PATCH 6.1 0/4] Update as-{instr,option} to use KBUILD_AFLAGS
Message-ID: <2023061934-scuttle-unveiled-1801@gregkh>
References: <20230612-6-1-asssembler-target-llvm-17-v1-0-75605d553401@kernel.org>
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In-Reply-To: <20230612-6-1-asssembler-target-llvm-17-v1-0-75605d553401@kernel.org>

On Wed, Jun 14, 2023 at 11:04:34AM -0700, Nathan Chancellor wrote:
> Hi all,
> 
> This series backports commit d5c8d6e0fa61 ("kbuild: Update assembler
> calls to use proper flags and language target") to linux-6.1.y to
> address a recent issue caused by a change in behavior in clang:
> 
> https://lore.kernel.org/CA+G9fYsJq0sPC+q6vLNKUgBqCGmmjDrfeP4R1-95Eu28FJRY_A@mail.gmail.com/
> https://lore.kernel.org/20230612185424.GA2891387@dev-arch.thelio-3990X/
> 
> While that was not the original intention of the aforementioned change,
> it ends up resolving the issue for the same reason, by not passing flags
> that are not supported or necessary for the current language target
> (KBUILD_CFLAGS for .c files and KBUILD_AFLAGS for .S files) when testing
> flags for that language target.
> 
> All patches except the second one are direct backports from mainline.
> The second patch is a stable specific patch because the upstream
> solution could break stable due to the minimum supported version of
> binutils in mainline being a newer version than 6.1 and earlier; it
> chooses to do the more conservative fix, which was alluded to in the
> changelog of the upstream commit.
> 
> For now, this is just a 6.1 issue. If the issue occurs in older
> releases, I will send separate backports. If there are any issues or
> objections to this series, please let me know.

All now queued up, thanks.

greg k-h