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

Adam Borowski
2017-03-21T08:22:35Z

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!