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

Jan Janecek
2014-04-13T13:03:11Z

2014-04-12 15:25, H. Peter Anvin:
> On 04/12/2014 02:53 PM, Linus Torvalds wrote:
>> On Sat, Apr 12, 2014 at 12:44 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>>> Run a 32-bit VM. The 32-bit kernel does this right.
>>
>> I really don't think that's the answer.
>>
>> If people really run these 16-bit programs, we need to allow it.
>> Clearly it used to work.
>>
>> Just make the unconditional "don't allow 16-bit segments" be a sysconf
>> entry.
>>
>
> Well, is there more than one user, really... that's my question.
>

Just to let you know, I use this too for running some old Win16 apps,
so there's at least two of us... But doesn't this change also break
DPMI apps running in dosemu?