Re: [tip:x86/urgent] x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels

[H. Peter Anvin]

On 04/11/2014 11:27 AM, Brian Gerst wrote:
> Is this bug really still present in modern CPUs?  This change breaks
> running 16-bit apps in Wine.  I have a few really old games I like to
> play on occasion, and I don't have a copy of Win 3.11 to put in a VM.

It is not a bug, per se, but an architectural definition issue, and it
is present in all x86 processors from all vendors.

Yes, it does break running 16-bit apps in Wine, although Wine could be
modified to put 16-bit apps in a container.  However, this is at best a
marginal use case.

	-hpa

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