KPTI Support For 64-bit ARM Getting Buttoned Up Ahead Of Linux 4.16

2018-Jan-14 | Tags: 64bitcompatibilitydevelopmentkernel

Linux on ARMKernel Page Table Isolation (KPTI) landed at the start of the year for x86/x86_64 systems for fending off the much talked about CPU attacks while the AMD64 / 64-bit ARM code is still a work-in-progress but looks like it will be squared away for the upcoming Linux 4.16 kernel cycle.

There is this Git branch and the base work for those wishing to track the last minute alterations. There is currently the latest KPTI page table isolation patches for ARM64 and does include a return trampoline, a new HARDEN_BRANCH_PREDICTOR Kconfig switch, branch predictor hardening for Falkor and Cortex-A CPUs, and other security hardening improvements.


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Linux on ARM