From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D5AF246339; Thu, 6 Feb 2025 15:42:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738856564; cv=none; b=QrPkZlmz9/UFbMHFwnRcljnz76HBb5IvgSwxhAf+pOV7slwtBIlLjn7CLGubKW3uftW4rDViPcsLSe2QTUHFJ9lkjp8NRWhqCZ2oR3fYjOa5bmB6xbFj445xDX7WaC/m6r8RtNQNrct3PQhq2eA3tOnm8BgFNhDyMHv+4V8hcCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738856564; c=relaxed/simple; bh=5+FTDlmQWovIleUiA1q3Ejj7y/6w0GAkmYeDjxkywuo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=uN1Ixfv/+vAvQ5CkxlZGcGjiGQJM+ss9z573M/LohG84xRhi9sO5pImb5BprYfI24wrOwRCOUsx/ldhYI/vfW5gq5kozpPG3iS7lH27HgQvqkLLG3hJ5CldTKG+I61AddVvcPVAJbqqHblgTm0fPumFZTvmytCGwLpOVMi5DtAA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qWo1Xryo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qWo1Xryo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8ACEDC4CEDF; Thu, 6 Feb 2025 15:42:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738856563; bh=5+FTDlmQWovIleUiA1q3Ejj7y/6w0GAkmYeDjxkywuo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qWo1XryojRSFF9wT8B7l4iOecPgHYZ7k5Ae2GLEIa0/ihek84O+EkuT1S1pqAzVDv 0k38KtKYCeoauKmS7ue4uwAi21xOrY58QoogK6BQQfQuSkiWQKtcsa8KPV5ShDbKYF yResPzeAXpbUr5HnAt9WHoVqnRO+BVuLfoXwGW+KtluQ2Ipgu2QZyQXezBdjyJfJ9Y mF4cODLjdNx0HB/1O9g0PNoCMJAOpUKxcJe7MyWpjVWT9xDXsFxeFylps/Lds9q3b8 GBemcQoPVLHTlgD2kQjMeLjuTRM1oS+9Z65kphdSaIpwR5yNL6lCDBE8Ch6moXsH/I Tn2tm3drx5/eg== From: Kees Cook To: John Paul Adrian Glaubitz , "Eric W. 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> Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit 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