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Biederman" Cc: Kees Cook , "Maciej W. Rozycki" , Arnd Bergmann , Richard Henderson , Matt Turner , "Paul E. McKenney" , linux-alpha@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Michael Cree , Sam James , Geert Uytterhoeven , Michael Karcher , Chris Hofstaedtler , util-linux@vger.kernel.org, linux-mips@vger.kernel.org, loongarch@lists.linux.dev Subject: Re: [PATCH v2] alpha/elf: Fix misc/setarch test of util-linux by removing 32bit support Date: Thu, 6 Feb 2025 07:42:32 -0800 Message-Id: <173885655037.1454207.17881331998395742818.b4-ty@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <87y0zfs26i.fsf_-_@email.froward.int.ebiederm.org> References: <20250103140148.370368-1-glaubitz@physik.fu-berlin.de> <24f03227-1b55-4e50-b6e9-7ac74fda2602@app.fastmail.com> <678ee681-12c3-4e79-a04b-495daf343846@app.fastmail.com> <82d33a2d-dffe-4268-a175-4536b3f9c07f@app.fastmail.com> <87jzb2tdb7.fsf_-_@email.froward.int.ebiederm.org> <2758fa70d237ff972b0c8d7114777dc4a20c8f3b.camel@physik.fu-berlin.de> <78f3ae1f68842a9d1af62caaac3929834ce6ecfa.camel@physik.fu-berlin.de> <87y0zfs26i.fsf_-_@email.froward.int.ebiederm.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: A30E8C0008 X-Rspamd-Server: rspam12 X-Stat-Signature: qyohhrwj4sk19bkaia5xhqwuxtx7g48i X-HE-Tag: 1738856564-639134 X-HE-Meta: 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 NNxBjeeg N/iJuWxwhjJfb6wfCj3HWpeHFSlBxhQ5ptIYG1dLEUgXAoHUeVeVmdpYzNtrbh6ytkJLostzzx4gtUiAzqqiQwyLVuuDbBRTuDM9uUjNXi9mDKaBLprfHQI/QM8Hz2odqVIrTqnwyBn9Jw9Lb9ga7xmHW2bN0LMSZAO0tEBKmb3au6fxToDB7I2/TjK62cTbxoFhnYv/Y0H+PHAeDOi4exMkG8uBwCT5kKHxYn2cMTRp/cx9rwuEMeAcCfFZ1eoKyWzo8uT46CD5UaBfejJesGEJbewFtHiroL4snEtnwLaSOJ0ib59obG0Dsew== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sun, 12 Jan 2025 23:39:01 -0600, Eric W. Biederman wrote: > Richard Henderson writes[1]: > > > There was a Spec benchmark (I forget which) which was memory bound and ran > > twice as fast with 32-bit pointers. > > > > I copied the idea from DEC to the ELF abi, but never did all the other work > > to allow the toolchain to take advantage. > > > > Amusingly, a later Spec changed the benchmark data sets to not fit into a > > 32-bit address space, specifically because of this. > > > > I expect one could delete the ELF bit and personality and no one would > > notice. Not even the 10 remaining Alpha users. > > [...] Applied to for-next/topic/execve/core, thanks! [1/1] alpha/elf: Fix misc/setarch test of util-linux by removing 32bit support https://git.kernel.org/kees/c/b029628be267 Take care, -- Kees Cook