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SubjectRe: [tip:x86/urgent] x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels
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Linus Torvalds <torvalds@linux-foundation.org> writes:

> On Fri, Apr 11, 2014 at 11:45 AM, Brian Gerst <brgerst@gmail.com> wrote:
>>
>> I haven't tested it recently but I do know it has worked on 64-bit
>> kernels. There is no reason for it not to, the only thing not
>> supported in long mode is vm86. 16-bit protected mode is unchanged.
>
> Afaik 64-bit windows doesn't support 16-bit binaries, so I just
> assumed Wine wouldn't do it either on x86-64. Not for any real
> technical reasons, though.
>
> HOWEVER. I'd like to hear something more definitive than "I haven't
> tested recently". The "we don't break user space" is about having
> actual real *users*, not about test programs.
>
> Are there people actually using 16-bit old windows programs under
> wine? That's what matters.

Yes, there is still a significant number of users, and we still
regularly get bug reports about specific 16-bit apps. It would be really
nice if we could continue to support them on x86-64, particularly since
Microsoft doesn't ;-)

--
Alexandre Julliard
julliard@winehq.org


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