From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-31.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 13934C43381 for ; Thu, 4 Mar 2021 18:47:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E294164F6A for ; Thu, 4 Mar 2021 18:47:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234845AbhCDSqp (ORCPT ); Thu, 4 Mar 2021 13:46:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234691AbhCDSq2 (ORCPT ); Thu, 4 Mar 2021 13:46:28 -0500 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A708C061574 for ; Thu, 4 Mar 2021 10:45:48 -0800 (PST) Received: by mail-pl1-x649.google.com with SMTP id x7so5068247plg.18 for ; Thu, 04 Mar 2021 10:45:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:message-id:mime-version:subject:from:to:cc; bh=FHJbv/IQitHrDrqVV5Zv3feuTlL4Ima66irM/2+LBrM=; b=wRgnh5UtXhuDMEX4WcxzBYAuLiE44UoxjjEiFelNA/MY0cFHVj48pME9fSr35jrMFE tSuyPw2CTDTdDIuy2+baTjYoz/wY8tQa6exgABVRCswBJrn+hjSwzUZWXny19wggiVrw ivQTLxairGocBLde57e2olP4slyQ5tt92+sSshb63VLs1P9CrtqXtbWWE4wQEonyL86d uOhNhNe3NpndX/wFly+2qibRgAe2Q1QOjFOJNAJ6S1weKBl9tZmhscVg489lt3wLn8wB IlD2/WxJkMUZ/Nvsb6yivdGf5ni3Beh+AXoUzorwOrU/794T4T4gKoxVoQDad1XkunUz wRVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:message-id:mime-version:subject:from :to:cc; bh=FHJbv/IQitHrDrqVV5Zv3feuTlL4Ima66irM/2+LBrM=; b=eIQAjXeqMMEcSIAyt9f8VD4j92DERJ3/mdDdY8suIxGDOgkwXNx6fN32VYzVxUmuqg IgDUl7e2+kBPp+24PORmRsZDWesCq0oFcjSxS4DevzoYDUpFp/srtwhvPwh/S4L2GE0y t4bMKuOM65QxRhaPpUlBzUdCfeqSNlgzTrfg1wn6YBtcoBY3Ce9lLY+WTXAW48r20szt /y9q7YjkrLjF3UJOxyy3czcNbkCB5sZio7ekuMSUDP5c2G/JMN4VOKffylDofalBtuL+ RzqBig5y5q/9jTAHeZLtg4fUBaLsEmw6EkEsEzTebO/SxdoPXGEnkF+n0qGrQPRW+txF FstA== X-Gm-Message-State: AOAM532JmBk7RNPk3FNlecs4y3GT/1PkYac8jqCoOh5eUiZAXjCmgxEU 49yjgnJG8Qx6DRzX5BPwk/WivCkY25snZv+9xnI= X-Google-Smtp-Source: ABdhPJwfgFOcLFg9DksNl5+x+5Ik41PWFI2fJWyTU8ahVjM+/AOUwJrkCCQX7ndFdpkYHpBGBfgJrt3sQ6pNyQya1sQ= Sender: "samitolvanen via sendgmr" X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:c931:40c9:b7a5:6cc8]) (user=samitolvanen job=sendgmr) by 2002:a17:90b:1b46:: with SMTP id nv6mr5948244pjb.45.1614883547630; Thu, 04 Mar 2021 10:45:47 -0800 (PST) Date: Thu, 4 Mar 2021 10:45:44 -0800 Message-Id: <20210304184544.2014171-1-samitolvanen@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.30.1.766.gb4fecdf3b7-goog Subject: [PATCH] KVM: arm64: Disable LTO in hyp From: Sami Tolvanen To: Marc Zyngier , James Morse Cc: Nathan Chancellor , Kees Cook , Julien Thierry , Suzuki K Poulose , Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org allmodconfig + CONFIG_LTO_CLANG_THIN=y fails to build due to following linker errors: ld.lld: error: irqbypass.c:(function __guest_enter: .text+0x21CC): relocation R_AARCH64_CONDBR19 out of range: 2031220 is not in [-1048576, 1048575]; references hyp_panic >>> defined in vmlinux.o ld.lld: error: irqbypass.c:(function __guest_enter: .text+0x21E0): relocation R_AARCH64_ADR_PREL_LO21 out of range: 2031200 is not in [-1048576, 1048575]; references hyp_panic >>> defined in vmlinux.o As LTO is not really necessary for the hypervisor code, disable it for the hyp directory to fix the build. Link: https://github.com/ClangBuiltLinux/linux/issues/1317 Reported-by: Nathan Chancellor Tested-by: Nathan Chancellor Signed-off-by: Sami Tolvanen --- arch/arm64/kvm/hyp/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 687598e41b21..e8116016e6a8 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -11,3 +11,6 @@ subdir-ccflags-y := -I$(incdir) \ $(DISABLE_STACKLEAK_PLUGIN) obj-$(CONFIG_KVM) += vhe/ nvhe/ pgtable.o + +# Disable LTO for the files in this directory +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) base-commit: f69d02e37a85645aa90d18cacfff36dba370f797 -- 2.30.1.766.gb4fecdf3b7-goog