On Sat, Jul 11, 2020 at 6:32 PM Paul Menzel <pmenzel@xxxxxxxxxxxxx> wrote: > > Dear Sami, > > > Am 24.06.20 um 22:31 schrieb Sami Tolvanen: > > This patch series adds support for building x86_64 and arm64 kernels > > with Clang's Link Time Optimization (LTO). > > > > In addition to performance, the primary motivation for LTO is to allow > > Clang's Control-Flow Integrity (CFI) to be used in the kernel. Google's > > Pixel devices have shipped with LTO+CFI kernels since 2018. > > > > Most of the patches are build system changes for handling LLVM bitcode, > > which Clang produces with LTO instead of ELF object files, postponing > > ELF processing until a later stage, and ensuring initcall ordering. > > > > Note that first objtool patch in the series is already in linux-next, > > but as it's needed with LTO, I'm including it also here to make testing > > easier. > > […] > > Thank you very much for sending these changes. > > Do you have a branch, where your current work can be pulled from? Your > branch on GitHub [1] seems 15 months old. > Agreed it's easier to git-pull. I have seen [1] - not sure if this is the latest version. Alternatively, you can check patchwork LKML by searching for $submitter. ( You can open patch 01/22 and download the whole patch-series by following the link "series", see [3]. ) - Sedat - [1] https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/log/?h=lto [2] https://lore.kernel.org/patchwork/project/lkml/list/?series=&submitter=19676 [3] https://lore.kernel.org/patchwork/series/450026/mbox/
