On Tue, Oct 05, 2021 at 12:59:05PM +0200, Marco Elver wrote: > Teach objtool to turn instrumentation required for memory barrier > modeling into nops in noinstr text. > > The __tsan_func_entry/exit calls are still emitted by compilers even > with the __no_sanitize_thread attribute. The memory barrier > instrumentation will be inserted explicitly (without compiler help), and > thus needs to also explicitly be removed. How is arm64 and others using kernel/entry + noinstr going to fix this? ISTR they fully rely on the compilers not emitting instrumentation, since they don't have objtool to fix up stray issues like this.
