On Thu, Apr 12, 2018 at 12:10:56PM +0100, 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? I've taken all of these now except the futex patch which did not apply. thanks, greg k-h