| Date | Thu, 16 Apr 2020 13:47:06 +0200 | From | Peter Zijlstra <> | Subject | [PATCH v5 00/17] objtool: vmlinux.o and noinstr validation |
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As should be familiar by now; these patches implement the noinstr (no-instrument) validation in objtool as requested by Thomas, to ensure critical code (entry for now, idle later) run no unexpected code.
Functions are marked with: noinstr, which implies notrace, noinline and sticks things in the .noinstr.text section. Such functions can then use instr_begin() and instr_end() to allow calls to code outside of this section in sanctioned areas.
On the way of getting there, it also fixes the x86/ftrace trampiline ORC unwind.
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