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Message-ID: <20200908212302.GD1060586@google.com>
Date: Tue, 8 Sep 2020 14:23:02 -0700
From: Sami Tolvanen <samitolvanen@...gle.com>
To: Kees Cook <keescook@...omium.org>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Will Deacon <will@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Steven Rostedt <rostedt@...dmis.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Paul E. McKenney" <paulmck@...nel.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
Subject: Re: [PATCH v2 22/28] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY
On Thu, Sep 03, 2020 at 03:44:18PM -0700, Kees Cook wrote:
> On Thu, Sep 03, 2020 at 01:30:47PM -0700, Sami Tolvanen wrote:
> > Since arm64 does not use -pg in CC_FLAGS_FTRACE with
> > DYNAMIC_FTRACE_WITH_REGS, skip running recordmcount by
> > exporting CC_USING_PATCHABLE_FUNCTION_ENTRY.
> >
> > Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
>
> How stand-alone is this? Does it depend on the earlier mcount fixes?
It does, because exporting CC_USING_PATCHABLE_FUNCTION_ENTRY doesn't
change anything without the earlier mcount changes.
Sami
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