Re: [RFC] x86/mm/KASLR: Remap GDTs at fixed location

From: Arjan van de Ven
Date: Thu Jan 05 2017 - 14:00:04 EST


On 1/5/2017 8:40 AM, Thomas Garnier wrote:
Well, it happens only when KASLR memory randomization is enabled. Do
you think it should have a separate config option?

no I would want it a runtime option.... "sgdt from ring 3" is going away
with UMIP (and is already possibly gone in virtual machines, see
https://lwn.net/Articles/694385/) and for those cases it would be a shame
to lose the randomization