linux-kernel - Re: [PATCH v2] alpha/elf: Fix misc/setarch test of util-linux by removing 32bit support

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Message-Id: <173885655037.1454207.17881331998395742818.b4-ty@kernel.org>
Date: Thu,  6 Feb 2025 07:42:32 -0800
From: Kees Cook <kees@...nel.org>
To: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Kees Cook <kees@...nel.org>,
	"Maciej W. Rozycki" <macro@...am.me.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Richard Henderson <richard.henderson@...aro.org>,
	Matt Turner <mattst88@...il.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	linux-alpha@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Michael Cree <mcree@...on.net.nz>,
	Sam James <sam@...too.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>,
	Chris Hofstaedtler <zeha@...ian.org>,
	util-linux@...r.kernel.org,
	linux-mips@...r.kernel.org,
	loongarch@...ts.linux.dev
Subject: Re: [PATCH v2] alpha/elf: Fix misc/setarch test of util-linux by removing 32bit support

On Sun, 12 Jan 2025 23:39:01 -0600, Eric W. Biederman wrote:
> Richard Henderson <richard.henderson@...aro.org> 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