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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=aVrOLfHwyYehNryqhGtvwSuHF6d3RoXEKFD3yMxv9WQ=; b=VRfrIuF2cBr/LNQHbdNtcoPrwzkoY6GX6zwHDModzJSJ306UUpsfe9KidYkQFehxQo wOtYHMEnxpnp8O96EDdC1Hul8yatRTo6MQuOgRZC0RzTEJP1vyBHHLY49T/q91iu0ntq iLCgkuzQ2nget6oWtcAxC/39G28MadvqrvSuU0Xci9+5fP21KT+Fn+PG3QuIdDD0YyCv QuIqgtcRLwbmaVqlt76sn+4U7RBcWw6AW6YEknPsQ5T+giV3+c7aA4I5d0G8JXBrPJV+ y6EGsZFiALHVjjausm+hWWxKKyME1UClrUeOtmUC98XCiDlOd5CRUTqgHfsgz1C9zWFC 7Ugg== X-Gm-Message-State: AOAM531XrSJYdNAuiguaq6rYNSgNItupMC+luvZKgSTkyP5vyGRp8+Uy 4iYv67sGv0A8sTOgvgKgmAd+gHHu/m8ulD2xN0A= X-Google-Smtp-Source: ABdhPJwNZuID1jcIf8cIxU0Ww5TlvyKdStjDCRvIBB9uhldEdK3D2TeNkVuM9PMADcBOExwezp45jHxla8E+Sk+8d04= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a25:9a48:: with SMTP id r8mr18569721ybo.294.1607712427760; Fri, 11 Dec 2020 10:47:07 -0800 (PST) Date: Fri, 11 Dec 2020 10:46:33 -0800 In-Reply-To: <20201211184633.3213045-1-samitolvanen@google.com> Message-Id: <20201211184633.3213045-17-samitolvanen@google.com> Mime-Version: 1.0 References: <20201211184633.3213045-1-samitolvanen@google.com> X-Mailer: git-send-email 2.29.2.576.ga3fc446d84-goog Subject: [PATCH v9 16/16] arm64: allow LTO to be selected From: Sami Tolvanen To: Masahiro Yamada , Steven Rostedt , Will Deacon X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201211_134711_829282_59EFC6F6 X-CRM114-Status: GOOD ( 11.63 ) 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, 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, linux-pci@vger.kernel.org, clang-built-linux@googlegroups.com, Sami Tolvanen , Josh Poimboeuf , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allow CONFIG_LTO_CLANG to be enabled. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook Acked-by: Will Deacon --- arch/arm64/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index cf7eaaa0fb2f..59abe44845f3 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -73,6 +73,8 @@ config ARM64 select ARCH_USE_SYM_ANNOTATIONS select ARCH_SUPPORTS_MEMORY_FAILURE select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK + select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN + select ARCH_SUPPORTS_LTO_CLANG_THIN select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG) select ARCH_SUPPORTS_NUMA_BALANCING