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Tue, 8 Apr 2025 03:43:50 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: T46c1ceb211c7c949 Date: Tue, 08 Apr 2025 09:43:10 +0200 From: "Arnd Bergmann" To: "Eric Biggers" , "Arnd Bergmann" Cc: linux-kbuild@vger.kernel.org, "H. Peter Anvin" , "Ard Biesheuvel" , "Borislav Petkov" , "Brian Gerst" , "Catalin Marinas" , "Dave Hansen" , "Herbert Xu" , "Ingo Molnar" , "Jonathan Corbet" , "Marc Zyngier" , "Mark Rutland" , "Masahiro Yamada" , "Nathan Chancellor" , "Nicolas Schier" , "Takashi Iwai" , "Thomas Gleixner" , "Uros Bizjak" , "Will Deacon" , linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, x86@kernel.org Message-Id: <0d087503-88d5-4d66-aa52-161ca6e0df06@app.fastmail.com> In-Reply-To: <20250407164151.GB2536@sol.localdomain> References: <20250407094116.1339199-1-arnd@kernel.org> <20250407164151.GB2536@sol.localdomain> Subject: Re: [PATCH 0/4] Make gcc-8.1 and binutils-2.30 the minimum version Content-Type: text/plain Content-Transfer-Encoding: 7bit On Mon, Apr 7, 2025, at 18:41, Eric Biggers wrote: > On Mon, Apr 07, 2025 at 11:41:12AM +0200, Arnd Bergmann wrote: > > This is intended to supersede the patches from Uros that removed checks for > binutils < 2.25, right? See: > > * > https://lore.kernel.org/linux-crypto/20250404074135.520812-1-ubizjak@gmail.com/ > * > https://lore.kernel.org/linux-crypto/20250404074135.520812-2-ubizjak@gmail.com > * > https://lore.kernel.org/linux-crypto/20250404074135.520812-3-ubizjak@gmail.com/ I missed these, but it does sounds we easy to work out, either by rebasing my patch or dropping Uros' version. > If we can indeed bump up the requirement to 2.30, that would be great. > > Just a note though: I recently added VAES and VPCLMULQDQ instructions to > BoringSSL, which increased the binutils requirement of building BoringSSL to > 2.30, and this caused issues in a downstream project; e.g. see > https://github.com/briansmith/ring/issues/2463. Specifically people complained > about being unable to build on Amazon Linux 2 and CentOS/RHEL/Oracle Linux 7. > > So I just thought I'd mention that, based on past experience with this sort of > thing, those are the specific cases where it seems people are most likely to be > trying to use binutils < 2.30. > > But if those distros are not going to be supported any longer (without > installing newer tools on them), or even are already unsupported due to the gcc > requirement, bumping up the binutils requirement to 2.30 sounds good to me. RHEL7 comes wit gcc-4.8.5, which is already too old to build the kernel, so I'm not worried about it at all. RHEL8 and Debian 10 have gcc-8, which is why that makes sense as a new minimum version. SLES-15 (gcc-7), Debian 9 (gcc-6), and Ubuntu 18.05 (gcc-7) are the ones that can currently build mainline kernels but are broken by this change. SLES-15 is the only one of those that are still supported, but they do ship with add-on compilers. Arnd