On Wed, Jul 8, 2015 at 10:49 AM, Andy Lutomirski <[email protected]> wrote:
>
> I don't know how to tell whether something is trying to use real mode,
> but I can play this just fine in DOSEMU on my 64-bit laptop:
So a 64-bit distro obviously will never have used vm86 mode - it
doesn't work there. Never has. There's no sane way to get to vm86 mode
from long mode, that's just how the 64-bit extensions worked.
(64-bit hardware obviously does support vm86 mode, but you have to
play games with mixing long mode and CPL0 32-bit protected mode to get
there, and we never did that).
It's the 32-bit distros I would worry about. The ones that may have
well disabled emulation, because they have vm86 mode enabled.
Linus
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