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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=iN3GbBjTX25viV6xW68a9oo3MkQJYWkKKPfs1TkAluY=; b=UqS52eSiwB6vDpeQPz2GAzRyT965j4CbR6iTVv/2wktLJYRISX/71Ydl/GFjw6UBHa MJmlHrRcC2HlTZDRz5AiZQzUZQk23JaArSuNkJ7BiiVsBt2NsSj+gzwm8C44URkcLqp7 x5aFXunHpJ9Oe+jKJL9U1T7T6fRghrS47CgVwatRACNgbaXSWQJG51aPDQhGN9kzgj4T bB2iCfAY/3wTjivUnDoXlR4f23YR9Afeg2pthYq+MUAMgm/+76+XRyP/ysb/gGkVkSo2 ZwXCGKZ4vQFWkIXNlClkjKtu6lsLVNXNtBiMKTzAcYO+vzNe5I2xGP7lyq2uaSg3c1Ms HrNA== X-Gm-Message-State: AOAM533acG/cSF3sEN8ylNC1eptg/k+6e4UubsTFncTNnQLKMxjant66 GWBi4LbVPLu7tiSWxtgzZEO3E+CmDVlOlQDPa8E= X-Google-Smtp-Source: ABdhPJyiG0zEVlMgXVpb6Zi8eshehY9Qj0OKZzrDehRr0ot1IUkMHErjz4cB8zqJtzXVoh7q4DtUcBhjwy1qLdSHusA= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a25:1455:: with SMTP id 82mr5771395ybu.274.1599165096721; Thu, 03 Sep 2020 13:31:36 -0700 (PDT) Date: Thu, 3 Sep 2020 13:30:45 -0700 In-Reply-To: <20200903203053.3411268-1-samitolvanen@google.com> Message-Id: <20200903203053.3411268-21-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> <20200903203053.3411268-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.526.ge36021eeef-goog Subject: [PATCH v2 20/28] efi/libstub: disable LTO From: Sami Tolvanen To: Masahiro Yamada , Will Deacon X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200903_213139_529759_F9357727 X-CRM114-Status: GOOD ( 11.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, x86@kernel.org, Kees Cook , "Paul E. McKenney" , kernel-hardening@lists.openwall.com, Peter Zijlstra , Greg Kroah-Hartman , linux-kbuild@vger.kernel.org, Nick Desaulniers , linux-kernel@vger.kernel.org, Steven Rostedt , clang-built-linux@googlegroups.com, Sami Tolvanen , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With CONFIG_LTO_CLANG, we produce LLVM bitcode instead of ELF object files. Since LTO is not really needed here and the Makefile assumes we produce an object file, disable LTO for libstub. Signed-off-by: Sami Tolvanen --- drivers/firmware/efi/libstub/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index 296b18fbd7a2..0ea5aa52c7fa 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -35,6 +35,8 @@ KBUILD_CFLAGS := $(cflags-y) -Os -DDISABLE_BRANCH_PROFILING \ # remove SCS flags from all objects in this directory KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) +# disable LTO +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) GCOV_PROFILE := n # Sanitizer runtimes are unavailable and cannot be linked here. -- 2.28.0.402.g5ffc5be6b7-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel