On 07 Mar 2016, at 17:28, Warner Losh <i...@bsdimp.com> wrote: ... > Alternatively, is there a switch to clang 3.8 that says 'Don't generate the > new > relocation, use the old one instead" which would also be safe and allow a > less-bumpy transition?
On amd64, we actually compile source files for the kernel with -fno-asynchronous-unwind-tables, which is the flag that ensures object files do not end up with a .eh_frame section, because the compiler will refrain from inserting CFI directives into the assembler. However, this only affects C source files, and we have a number of hand-written assembler sources in the tree, with CFI directives in them. These will always result in .eh_frame sections, unless there is another assembler-specific flag of suppressing that. -Dimitry
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