Re: [RFC v2 00/27] Kernel Address Space Isolation

From: Dave Hansen
Date: Fri Jul 12 2019 - 09:58:52 EST


On 7/12/19 6:43 AM, Alexandre Chartre wrote:
> The current approach is assuming that anything in the user address space
> can be sensitive, and so the user address space shouldn't be mapped in ASI.

Is this universally true?

There's certainly *some* mitigation provided by SMAP that would allow
userspace to remain mapped and still protected.