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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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