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[157.230.128.187]) by smtp.gmail.com with ESMTPSA id z11sm20679101pfk.141.2020.06.24.05.52.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jun 2020 05:52:37 -0700 (PDT) Received: by 42.do-not-panic.com (Postfix, from userid 1000) id BAA8F40430; Wed, 24 Jun 2020 12:52:36 +0000 (UTC) Date: Wed, 24 Jun 2020 12:52:36 +0000 From: Luis Chamberlain To: Alexander Popov Cc: Kees Cook , Jann Horn , Emese Revfy , Miguel Ojeda , Masahiro Yamada , Michal Marek , Andrew Morton , Masahiro Yamada , Thiago Jung Bauermann , Jessica Yu , Sven Schnelle , Iurii Zaikin , Catalin Marinas , Will Deacon , Vincenzo Frascino , Thomas Gleixner , Peter Collingbourne , Naohiro Aota , Alexander Monakov , Mathias Krause , PaX Team , Brad Spengler , Laura Abbott , Florian Weimer , kernel-hardening@lists.openwall.com, linux-kbuild@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, gcc@gcc.gnu.org, notify@kernel.org Subject: Re: [PATCH v2 2/5] ARM: vdso: Don't use gcc plugins for building vgettimeofday.c Message-ID: <20200624125236.GF4332@42.do-not-panic.com> References: <20200624123330.83226-1-alex.popov@linux.com> <20200624123330.83226-3-alex.popov@linux.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200624123330.83226-3-alex.popov@linux.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 24, 2020 at 03:33:27PM +0300, Alexander Popov wrote: > Don't use gcc plugins for building arch/arm/vdso/vgettimeofday.c to > avoid unneeded instrumentation. > > Signed-off-by: Alexander Popov But why is skipping it safe? Luis