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From: Adam Borowski <kilobyte@angband.pl>
To: Sven Hartrumpf <hartrumpf@gmx.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Can we drop upstream Linux x32 support?
Date: Thu, 13 Dec 2018 10:57:24 +0100	[thread overview]
Message-ID: <20181213095724.f4ziawroveksd35t@angband.pl> (raw)
In-Reply-To: <20181213.103731.734229932284065893.hartrumpf@gmx.net>

On Thu, Dec 13, 2018 at 10:37:31AM +0100, Sven Hartrumpf wrote:
> Will the proposed patch ("only") remove the possibility to build x32 kernels
> or will it make impossible to compile and run any x32 binaries?

There's no such thing as x32 kernels.  It's an ABI atop amd64 kernels; the
kernel is always 64-bit -- short pointers apply only to userspace and
syscalls.

It could be interesting to block regular amd64 syscalls and leave x32 only
-- for "security through rarity", but the kernel itself would still look the
same.


Meow!
-- 
⢀⣴⠾⠻⢶⣦⠀ 
⣾⠁⢠⠒⠀⣿⡁ Ivan was a worldly man: born in St. Petersburg, raised in
⢿⡄⠘⠷⠚⠋⠀ Petrograd, lived most of his life in Leningrad, then returned
⠈⠳⣄⠀⠀⠀⠀ to the city of his birth to die.

  reply	other threads:[~2018-12-13  9:57 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-11  1:23 Can we drop upstream Linux x32 support? Andy Lutomirski
2018-12-11  1:40 ` Linus Torvalds
2018-12-11  2:22   ` hpa
2018-12-11  8:16   ` Florian Weimer
2018-12-11 21:53   ` Thorsten Glaser
2018-12-11 23:22     ` Andy Lutomirski
2018-12-11 23:35       ` Thorsten Glaser
2018-12-11 23:55         ` Arnd Bergmann
2018-12-12  2:24         ` Andy Lutomirski
2018-12-12  2:33           ` Thorsten Glaser
2018-12-12  9:04             ` Arnd Bergmann
2018-12-12 18:14               ` Joseph Myers
2018-12-12 18:50                 ` Ivan Ivanov
2018-12-12 19:12                   ` Andy Lutomirski
2018-12-12 19:18                     ` Ivan Ivanov
2018-12-12 16:39             ` Andy Lutomirski
2018-12-12 16:52               ` Rich Felker
2018-12-12 18:03                 ` Andy Lutomirski
2018-12-13 12:40                   ` Catalin Marinas
2018-12-13 15:57                     ` Rich Felker
2018-12-13 16:04                       ` Florian Weimer
2018-12-13 16:28                         ` Rich Felker
2018-12-14 11:42                           ` Florian Weimer
2018-12-14 16:13                             ` Rich Felker
2018-12-13 18:42                         ` Joseph Myers
2018-12-15  4:53               ` Thorsten Glaser
2018-12-11 23:38       ` Rich Felker
2018-12-11 23:40     ` Maciej W. Rozycki
2018-12-13 14:38   ` Olof Johansson
2018-12-13 15:46     ` Lance Richardson
2018-12-13 16:11   ` Richard Purdie
2018-12-11  3:14 ` H.J. Lu
2018-12-11  5:35   ` Andy Lutomirski
2018-12-11  9:02     ` Arnd Bergmann
2018-12-11 11:32       ` Catalin Marinas
2018-12-11 11:37         ` Florian Weimer
2018-12-11 11:52           ` Catalin Marinas
2018-12-11  5:46 ` Christian Brauner
2018-12-11 10:29 ` John Paul Adrian Glaubitz
2018-12-11 10:37   ` Florian Weimer
2018-12-11 10:44     ` John Paul Adrian Glaubitz
2018-12-11 21:59   ` Thorsten Glaser
2018-12-11 23:33     ` Rich Felker
2018-12-13  5:03   ` Kevin Easton
2018-12-13  9:05     ` Richard Weinberger
2018-12-13  9:37       ` Sven Hartrumpf
2018-12-13  9:57         ` Adam Borowski [this message]
2018-12-13 18:50         ` Sven Hartrumpf
2018-12-13 12:12       ` Kevin Easton
2018-12-14 14:38       ` David Laight
2018-12-14 15:17         ` Richard Weinberger
2018-12-13 16:02   ` Rich Felker
2018-12-14 14:13     ` Bernd Petrovitsch
2018-12-14 16:17       ` Rich Felker
2018-12-14 16:29         ` Bernd Petrovitsch
2018-12-14 16:38         ` Florian Weimer
2018-12-14 16:55           ` Rich Felker
2018-12-14 18:58             ` Andy Lutomirski
2018-12-14 19:59               ` Lance Richardson
2018-12-14 20:13               ` Linus Torvalds
2018-12-14 21:27                 ` Andy Lutomirski
2018-12-14 21:16 ` Thomas Schöbel-Theuer
2018-12-14 21:24   ` Andy Lutomirski
2018-12-14 21:41     ` Thomas Schöbel-Theuer
2018-12-15  7:41       ` Thomas Schoebel-Theuer
2018-12-15 15:30         ` Andy Lutomirski
2019-01-09 12:41   ` Florian Weimer
2019-01-09 16:02     ` Rich Felker
2019-01-22 13:34   ` Enrico Weigelt, metux IT consult
2018-12-11 20:38 Shawn Rutledge
2018-12-12  0:00 ` Maciej W. Rozycki
2018-12-12  9:12 Steven Newbury
2018-12-12 10:48 ` Thorsten Glaser
2018-12-12 13:27   ` Steven Newbury
2018-12-12 14:01 ` Rich Felker
2018-12-12 14:46   ` Steven Newbury
2018-12-12 16:05     ` Rich Felker
2018-12-13 16:17 tedheadster

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