[PATCH 11/11] kernel/x86: enable x32 support for amd64

[Stefan Lippers-Hollmann]

Hi

On 2023-11-15, Stefan Lippers-Hollmann wrote:
> On 2023-11-14, Elliott Mitchell wrote:
> > Date: Thu, 30 Mar 2023 16:30:49 -0700
> >
> > Full amd64 support isn't really appropriate for most situations
> > OpenWRT is deployed.  Whereas x86-x32 seems extremely appropriate for
> > these situations.  As such enable x86-x32 support.

[...]

> What would be the reason for enabling x32?
> There is very little upstream buy-in for x32, when this question came
> up for Debian, it was rejected to be enabled for -among other reasons-
> concerns about the the system call ABI and its security hardening, as
> well as concerns about the long term ABI compatibility (the later of
> which probably not that relevant for OpenWrt, the former however is).

Just to add some references to this:
- Can we drop upstream Linux x32 support?
  https://lkml.org/lkml/2018/12/10/1145
  the whole thread is interesting and doesn't display too much
  sympathy for x32
- information about the never merged/ defunct x32 port proposed for
  Debian
  https://wiki.debian.org/X32Port

Regards
	Stefan Lippers-Hollmann