Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1605409

Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel

From Adam Borowski <kilobyte@angband.pl>
Newsgroups linux.kernel
Subject Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel
Date 2017-03-21 09:30 +0100
Message-ID <tnnkZ-EB-1@gated-at.bofh.it> (permalink)
References <tnfnr-3z0-13@gated-at.bofh.it> <tnkn8-7aS-9@gated-at.bofh.it> <tnlMd-82W-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On Tue, Mar 21, 2017 at 07:45:39AM +0100, Ingo Molnar wrote:
> * Andrei Vagin <avagin@gmail.com> wrote:
> 
> > # first bad commit: [45fc8757d1d2128e342b4e7ef39adedf7752faac] x86:
> > Make the GDT remapping read-only on 64-bit
> 
> Just wondering, does the following commit fix it:
> 
>   5b781c7e317f x86/tls: Forcibly set the accessed bit in TLS segments

It does fix i386 but not x32.

By "x32" I mean CONFIG_X86_X32, by "i386" CONFIG_IA32_EMULATION, contrary to
Andrei's first report.  The naming of the new ABI wasn't too fortunate...

-- 
⢀⣴⠾⠻⢶⣦⠀ Meow!
⣾⠁⢠⠒⠀⣿⡁
⢿⡄⠘⠷⠚⠋⠀ Collisions shmolisions, let's see them find a collision or second
⠈⠳⣄⠀⠀⠀⠀ preimage for double rot13!

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Andrei Vagin <avagin@gmail.com> - 2017-03-21 01:00 +0100
  Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Adam Borowski <kilobyte@angband.pl> - 2017-03-21 04:00 +0100
  Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Andrei Vagin <avagin@gmail.com> - 2017-03-21 06:20 +0100
    Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Ingo Molnar <mingo@kernel.org> - 2017-03-21 07:50 +0100
      Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Adam Borowski <kilobyte@angband.pl> - 2017-03-21 09:30 +0100
        Re: linux-next: x86: Unalbe to run x32 processes on the x86_64  kernel Thomas Gleixner <tglx@linutronix.de> - 2017-03-21 13:50 +0100
          Re: linux-next: x86: Unalbe to run x32 processes on the x86_64 kernel Andy Lutomirski <luto@amacapital.net> - 2017-03-21 17:40 +0100

csiph-web