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h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Drzf+ovEUSyOi+53PvLdTMzivnlbedBfWSZ+CryATUQ=; b=a75QNScHrTm/N5pM8S36ivq8vrslliQmVWpsLkkfWqFAPLSollES1HIBvpupNn77cJ TrkPidE8NF1d7jUalaqDyFfbMf28V7kRMkASzXKY69+0Fj+4wRscCPs5PoPKr0aqc1k1 rdUFZGfMr/K1m4ENSgFP8aEtXuXlv/JY4/83DFlpH/sHLhdzHKhEzyJZ3BiEltbhV+kH TqZHtI6lGG+cww49gOQb80jKWDPEh18NOtMIAMCjNxNQhMq2c7QS87CV/Jlpfac2CYNz ThAZ9cReEr2Mp1Cxo+g/FGkmvNflfW0JQb+9oDlyFvcnmaKwVbb48vOkTZrz/zUB6g3S so2w== X-Gm-Message-State: AJaThX7Kd64YUVNIGLPiBEKqhJzmncuRdQ+F2M1MT8GTBK9X9a05XC21 EhO9Ju1iHekkw/e8TOdYuB7wJw== X-Google-Smtp-Source: AGs4zMZLberruuddT3NsyKt1sfH7jWZU/Bxbxciw/cAmaR7Skr4UmmWvuYjnLimEjadt/To6G6kVqg== X-Received: by 10.36.46.4 with SMTP id i4mr4954179ita.145.1510781708483; Wed, 15 Nov 2017 13:35:08 -0800 (PST) Received: from samitolvanen.mtv.corp.google.com ([100.98.112.14]) by smtp.gmail.com with ESMTPSA id 68sm9735197iov.2.2017.11.15.13.35.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 15 Nov 2017 13:35:07 -0800 (PST) From: Sami Tolvanen To: Alex Matveev , Andi Kleen , Ard Biesheuvel , Greg Hackmann , Kees Cook , linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Mark Rutland , Masahiro Yamada , Maxim Kuvyrkov , Michal Marek , Nick Desaulniers , Yury Norov , Matthias Kaehlcke Subject: [PATCH v2 15/18] efi/libstub: disable LTO Date: Wed, 15 Nov 2017 13:34:25 -0800 Message-Id: <20171115213428.22559-16-samitolvanen@google.com> X-Mailer: git-send-email 2.15.0.448.gf294e3d99a-goog In-Reply-To: <20171115213428.22559-1-samitolvanen@google.com> References: <20171115213428.22559-1-samitolvanen@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171115_133526_216658_2A1E7DF4 X-CRM114-Status: UNSURE ( 9.78 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sami Tolvanen MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP With CONFIG_LTO_CLANG, we produce LLVM IR instead of object files. Since LTO is not really needed here and the Makefile assumes we produce an object file, disable LTO for libstub. Acked-by: Ard Biesheuvel Signed-off-by: Sami Tolvanen --- drivers/firmware/efi/libstub/Makefile | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index adaa4a964f0c..69b3fbfb7f97 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -20,7 +20,8 @@ cflags-$(CONFIG_EFI_ARMSTUB) += -I$(srctree)/scripts/dtc/libfdt KBUILD_CFLAGS := $(cflags-y) -DDISABLE_BRANCH_PROFILING \ -D__NO_FORTIFY \ $(call cc-option,-ffreestanding) \ - $(call cc-option,-fno-stack-protector) + $(call cc-option,-fno-stack-protector) \ + $(DISABLE_LTO) GCOV_PROFILE := n KASAN_SANITIZE := n