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Message-ID: <20200722200608.40ca9994@oasis.local.home> Date: Wed, 22 Jul 2020 20:06:08 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Peter Zijlstra <peterz@...radead.org> Cc: Sami Tolvanen <samitolvanen@...gle.com>, Masahiro Yamada <masahiroy@...nel.org>, Will Deacon <will@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Paul E. McKenney" <paulmck@...nel.org>, Kees Cook <keescook@...omium.org>, Nick Desaulniers <ndesaulniers@...gle.com>, clang-built-linux@...glegroups.com, kernel-hardening@...ts.openwall.com, linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, x86@...nel.org, Josh Poimboeuf <jpoimboe@...hat.com> Subject: Re: [RFC][PATCH] objtool,x86_64: Replace recordmcount with objtool On Thu, 23 Jul 2020 01:56:20 +0200 Peter Zijlstra <peterz@...radead.org> wrote: > Anyway, what do you prefer, I suppose I can make objtool whatever we > need, that patch is trivial. Simply recording the sites and not > rewriting them should be simple enough. Either way. If objtool turns it into nops, just make it where we can enable -DCC_USING_NOP_MCOUNT set, and the kernel will be unaware. Or if you just add the locations, then that would work too. -- Steve
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