Re: [PATCH] x86/umip: Add emulation for 64-bit processes

From: Borislav Petkov
Date: Sun Sep 08 2019 - 03:22:59 EST

On Sat, Sep 07, 2019 at 02:26:10PM -0700, Ricardo Neri wrote:
> > Wine users have encountered a number of 64-bit Windows games that use
> > these instructions (particularly sgdt), and were crashing when run on
> > UMIP-enabled systems.
> Emulation support for 64-bit processes was not initially included
> because no use cases had been identified.

AFAIR, we said at the time that 64-bit doesn't need it because this is
legacy software only and 64-bit will get fixed properly not to use those
insns. I can probably guess how that went ...