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=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 F250ECA9ECB for ; Thu, 31 Oct 2019 16:47:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C8ABE2087F for ; Thu, 31 Oct 2019 16:47:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="JwFwWyNM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729037AbfJaQra (ORCPT ); Thu, 31 Oct 2019 12:47:30 -0400 Received: from mail-pf1-f201.google.com ([209.85.210.201]:32907 "EHLO mail-pf1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729018AbfJaQr1 (ORCPT ); Thu, 31 Oct 2019 12:47:27 -0400 Received: by mail-pf1-f201.google.com with SMTP id g20so5019987pfo.0 for ; Thu, 31 Oct 2019 09:47:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=J83AV+8pmxy6MQ8Uszleewce6gVoMir4DYxUv0MBtSY=; b=JwFwWyNMv/RSq1lmIG7yeu7XzK5N0yGFebd9HD0oWd+L64cVHCjNrLKXvpd31A8m+o zacFSlAh7/S3GrsWYw8wOsz2riJzwAmUFphK9R3y/YJdaVSd/jkXF/Q3qSE7wm8QON6m 8mWRne5R6DOJ3KZmWMsv6rx2Y/vxcHDIQsZfg/5fmf+Zp5HlVd7VP1G5fKtX4FB8a3Bm 8RVCvD6+cudu/Eg1HxbSqa7xROHq/x3T25smtETOf5KVnSr4x5SBcV1jFg774W893DEo G58Q3hgq+5V0/nL/ilZ23sMkgZGieLq55EJ/1/61Mg1lGY8hcPLmSpXvq/AV5DgETbO1 ZBgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=J83AV+8pmxy6MQ8Uszleewce6gVoMir4DYxUv0MBtSY=; b=Z0EMCNRuN+uQtQHak0sBGa1tkrjYYOTF/OY4ch+jZaqt8lwBNbx7Wr+uR8l7s1+s0m XvpevgDZDZpr/2/gS1ml26DK05H4VwB0k9caPro/ddoeZNAzsHoczBxQXlHx4XFHXuxe VKxqZF59stDp1PxYbiPNtLq40+ILcyiFSaFAbonnAjMo/uOEK7TWdZ75rarTUopKnPEe pSLNhRS4h3OuiLR4hqW1oDRt+0I2biGdwYfUrBKlAHXavUPdP808UXdeulnkYjHBWD4h xC/1hRh3LBP6wPAAQJP5x+wDZnFVRdzcQEgZFM199PS418tnE2WCjqETfSijsenJceO3 XCIQ== X-Gm-Message-State: APjAAAVqDuY/+5H17ZpPlV0BwBtNPG2vB4a2IixWT+NARixwNzXGYP7i JZtCm5V7TdMAPj1rWa592Tuza76HVa13b/dztCI= X-Google-Smtp-Source: APXvYqz5tyIdUbH5XenlPdO5u18Bp097Z3l5i1ng81ta9dMEULM4omVmWKyeE1529Bf0daIn3cRdGv4Ho7NXy7c+5zY= X-Received: by 2002:a63:e056:: with SMTP id n22mr7564302pgj.73.1572540445818; Thu, 31 Oct 2019 09:47:25 -0700 (PDT) Date: Thu, 31 Oct 2019 09:46:36 -0700 In-Reply-To: <20191031164637.48901-1-samitolvanen@google.com> Message-Id: <20191031164637.48901-17-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191031164637.48901-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.rc0.303.g954a862665-goog Subject: [PATCH v3 16/17] arm64: disable SCS for hypervisor code From: samitolvanen@google.com To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel Cc: Dave Martin , Kees Cook , Laura Abbott , Mark Rutland , Nick Desaulniers , Jann Horn , Miguel Ojeda , Masahiro Yamada , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sami Tolvanen Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Filter out CC_FLAGS_SCS for code that runs at a different exception level. Suggested-by: Steven Rostedt (VMware) 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 ea710f674cb6..17ea3da325e9 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -28,3 +28,6 @@ GCOV_PROFILE := n KASAN_SANITIZE := n UBSAN_SANITIZE := n KCOV_INSTRUMENT := n + +# remove the SCS flags from all objects in this directory +KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) -- 2.24.0.rc0.303.g954a862665-goog