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Message-ID: <202009031546.98CA2EF4@keescook>
Date: Thu, 3 Sep 2020 15:46:09 -0700
From: Kees Cook <keescook@...omium.org>
To: Sami Tolvanen <samitolvanen@...gle.com>
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 26/28] x86, vdso: disable LTO only for vDSO
On Thu, Sep 03, 2020 at 01:30:51PM -0700, Sami Tolvanen wrote:
> Remove the undefined DISABLE_LTO flag from the vDSO, and filter out
> CC_FLAGS_LTO flags instead where needed. Note that while we could use
> Clang's LTO for the 64-bit vDSO, it won't add noticeable benefit for
> the small amount of C code.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
Moar DISABLE_LTO...
Reviewed-by: Kees Cook <keescook@...omium.org>
--
Kees Cook
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