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[2.100.232.239]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-488cd18f90asm585985e9.28.2026.04.08.08.57.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Apr 2026 08:57:42 -0700 (PDT) Message-ID: Date: Wed, 8 Apr 2026 16:57:41 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/boot: Discard .interp sections To: Borislav Petkov Cc: Segher Boessenkool , Michael Matz , tglx@kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org, x86@kernel.org, linux-toolchains@vger.kernel.org References: <20260407233957.2263551-1-lehoangnamtep@gmail.com> <20260408095202.GAadYlQtQvNJ5WXFDn@fat_crate.local> <20260408100944.GBadYpaB8WLl78FamY@fat_crate.local> <2b848d54-c265-4675-91bd-a84fb2719b00@gmail.com> <20260408124950.GCadZO7qkTh83ojTHr@fat_crate.local> <5f853c8f-67fe-4a9f-bc8b-4e5c80f4090e@gmail.com> <20260408152140.GDadZyhEaap8IK9zRt@fat_crate.local> Content-Language: en-US From: Nam Le In-Reply-To: <20260408152140.GDadZyhEaap8IK9zRt@fat_crate.local> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 08/04/2026 16:21, Borislav Petkov wrote: > On Wed, Apr 08, 2026 at 02:30:06PM +0100, Nam Le wrote: >> I am hesitant on modifying the Makefile to add the --no-dynamic-linker >> flag since a previous kernel patch proposed this exact change but was >> rejected a while back: > > Ok, so how is Nix building kernels then? > > It sounds like they have some local fix for building the kernel. > I just double-checked and it seems Nix has a workaround to remove the --dynamic-linker flag before building the kernel. As I was hand-compiling the kernel rather than installing it from Nix, the workaround did not get applied. > And if so, why does the upstream kernel care? Regarding this, I just think the difference in behavior between ld.lld and ld.bfd is severe enough that handling this edge case is warranted. I am happy to leave this patch out though, or add something minimal like a conditional check to add --no-dynamic-linker if the linker is ld.lld.