[MinnowBoard] 64-bit vs 32-bit UEFI - What you need to know!

[Adam Goode]

X doesn't use this support. It has an x86 emulator that it uses on all
platforms these days.

On Fri, Sep 12, 2014 at 3:49 PM,  <selsinork at gmail.com> wrote:
> On 12/09/14 18:10, "Thomas B. Rücker" wrote:
>
> You can run either a multi-arch distro or a 32-bit userland with a 64bit
> kernel.
> Unless you need to somehow plug some binary only 32bit kernel module in,
> there should be no reason for a 32bit kernel, from what I can tell.
>
>
> config VM86
>         bool "Enable VM86 support" if EXPERT
>         default y
>         depends on X86_32
>         ---help---
>           This option is required by programs like DOSEMU to run
>           16-bit real mode legacy code on x86 processors. It also may
>           be needed by software like XFree86 to initialize some video
>           cards via BIOS. Disabling this option saves about 6K.
>
> It had been a while since I'd looked, so wasn't sure if this was still the
> case after the X86 restructuring, but seems that it still requires a 32 bit
> kernel to work.
>
> This isn't for any binary-only stuff or kernel modules, it's standard
> userspace code.  Sometimes there are alternatives, sometimes not. What it's
> referring to with the XFree86 comment is the need to run some code from rom
> on an add-in card. Legacy reasons mean this is typically 16bit code.  PC's
> have the advantage of being quite standardised and very backward compatible,
> but that does come with baggage like needing to be compatible with 1981.
>
>
>
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