On 04/12/2018 04:10 AM, Mark Rutland wrote: > Hi Greg, > > These patches backport arm64 spectre mitigations to v4.9.y (based on 4.9.93). > > I've done this backport from scratch, following the patches in the arm64 kpti > branch [1] (which contrary to its name, also has spectre patches intended for > backporting). > > To the best of my understanding the code is correct, in the context of the > v4.9.y kernel, and I've tested the series on arm64 hardware available to me, > using firmware with SMCCC 1.1 and branch predictor mitigations. > > I've Cc'd the usual suspects for testing. For anyone willing to test this, I've > pushed this out to the stable/4.9.y/spectre branch of my kernel.org repo [2]. > > Note that I've left off the Qualcomm Falkor patches, as it was pointed out that > necessary errata workarounds for Falkor were never backported, and thus I > assume that no-one is using v4.9.y on Falkor parts. Shanker, do you have any > idea whether people are using v4.9.y on Falkor? > > Thanks, > Mark. I've run this series on hikey on top of vanilla 4.9.93 (boots AOSP to serial shell) and android-linaro-hikey-4.9 (boots AOSP to home screen), with both SMCCC 1.0 and SMCCC 1.1 firmware. Tested-by: Greg Hackmann <ghackmann@xxxxxxxxxx>