KAISER: hiding the kernel from user space

Posted Nov 22, 2017 10:40 UTC (Wed) by mlankhorst (subscriber, #52260)
Parent article: KAISER: hiding the kernel from user space

Can't it be done for nearly free using SMAP + SMEP?

Put the kernel mapping at ring3, and make the remainder of the upper 64-bits mapped RWX at ring 1 or 2.

Try to exploit timing differences then from RING 0!

Or am I thinking too simple?