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    SubjectRe: [PATCH 00/22] add support for Clang LTO
    On Sat, Jul 11, 2020 at 9:32 AM Paul Menzel <pmenzel@molgen.mpg.de> wrote:
    > 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.

    The clang-lto branch is rebased regularly on top of Linus' tree.
    GitHub just looks at the commit date of the last commit in the tree,
    which isn't all that informative.

    > Out of curiosity, I applied the changes, allowed the selection for i386
    > (x86), and with Clang 1:11~++20200701093119+ffee8040534-1~exp1 from
    > Debian experimental, it failed with `Invalid absolute R_386_32
    > relocation: KERNEL_PAGES`:

    I haven't looked at getting this to work on i386, which is why we only
    select ARCH_SUPPORTS_LTO for x86_64. I would expect there to be a few
    issues to address.

    > > arch/x86/tools/relocs vmlinux > arch/x86/boot/compressed/vmlinux.relocs;arch/x86/tools/relocs --abs-relocs vmlinux
    > > Invalid absolute R_386_32 relocation: KERNEL_PAGES

    KERNEL_PAGES looks like a constant, so it's probably safe to ignore
    the absolute relocation in tools/relocs.c.

    Sami

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