linux-kernel - Re: Can we drop upstream Linux x32 support?

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Message-ID: <alpine.DEB.2.21.1812131833430.2735@digraph.polyomino.org.uk>
Date:   Thu, 13 Dec 2018 18:42:45 +0000
From:   Joseph Myers <joseph@...esourcery.com>
To:     Florian Weimer <fweimer@...hat.com>
CC:     Rich Felker <dalias@...c.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Andy Lutomirski <luto@...nel.org>, <tg@...bsd.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        X86 ML <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        Mike Frysinger <vapier@...too.org>,
        "H. J. Lu" <hjl.tools@...il.com>, <x32@...ldd.debian.org>,
        Arnd Bergmann <arnd@...db.de>,
        Will Deacon <will.deacon@....com>
Subject: Re: Can we drop upstream Linux x32 support?

On Thu, 13 Dec 2018, Florian Weimer wrote:

> Similarly, we could have integer types with trap representations.

C++2a will require two's complement representation for integer types, with 
no trap representations (other than for bool, where only 0 and 1 are valid 
representations).  It seems very plausible that C will follow.

-- 
Joseph S. Myers
joseph@...esourcery.com