On 7/15/18 4:26 AM, Greg KH wrote: > On Sat, Jul 14, 2018 at 02:25:43AM -0700, Srivatsa S. Bhat wrote: >> Hi Greg, >> >> This patch series is a backport of the Spectre-v2 fixes (IBPB/IBRS) >> and patches for the Speculative Store Bypass vulnerability to 4.4.y >> (they apply cleanly on top of 4.4.140). >> >> I used 4.9.y as my reference when backporting to 4.4.y (as I thought >> that would minimize the amount of fixing up necessary). Unfortunately >> I had to skip the KVM fixes for these vulnerabilities, as the KVM >> codebase is drastically different in 4.4 as compared to 4.9. (I tried >> my best to backport them initially, but wasn't confident that they >> were correct, so I decided to drop them from this series). >> >> You'll notice that the initial few patches in this series include >> cleanups etc., that are non-critical to IBPB/IBRS/SSBD. Most of these >> patches are aimed at getting the cpufeature.h vs cpufeatures.h split >> into 4.4, since a lot of the subsequent patches update these headers. >> On my first attempt to backport these patches to 4.4.y, I had actually >> tried to do all the updates on the cpufeature.h file itself, but it >> started getting very cumbersome, so I resorted to backporting the >> cpufeature.h vs cpufeatures.h split and their dependencies as well. I >> think apart from these initial patches, the rest of the patchset >> doesn't have all that much noise. > > I've applied the "initial" patches to the 4.4-stable queue right now, as > those were all just "housekeeping" stuff. I'll let others review the > rest of the series this week and see if anyone objects before throwing > them at the test-bots. > Sounds great! Thanks a lot! > Many thanks for doing all of this work. > Thank you Greg! Regards, Srivatsa VMware Photon OS
