Messages in this thread | | | Date | Sat, 12 Apr 2014 15:25:03 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [tip:x86/urgent] x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels |
| |
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.
But yes, we can make it configurable, but the default should almost certainly be off.
-hpa
| |