Messages in this thread | | | From | Ard Biesheuvel <> | Date | Mon, 14 Nov 2022 12:56:43 +0100 | Subject | Re: [PATCH 00/46] gcc-LTO support for the kernel |
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On Mon, 14 Nov 2022 at 12:44, Jiri Slaby (SUSE) <jirislaby@kernel.org> wrote: > > Hi, > > this is the first call for comments (and kbuild complaints) for this > support of gcc (full) LTO in the kernel. Most of the patches come from > Andi. Me and Martin rebased them to new kernels and fixed the to-use > known issues. Also I updated most of the commit logs and reordered the > patches to groups of patches with similar intent. > > The very first patch comes from Alexander and is pending on some x86 > queue already (I believe). I am attaching it only for completeness. > Without that, the kernel does not boot (LTO reorders a lot). >
You didn't cc me on that patch so I will reply here: I don't think this is the right solution. On x86, there is a lot of stuff injected into .head.text that simply does not belong there, and getting rid of the __head annotation and dropping __HEAD from the Xen pvh head.S file would be a much better solution.
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