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,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 E8A65C3F68F for ; Fri, 6 Dec 2019 22:14:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BDD0524679 for ; Fri, 6 Dec 2019 22:14:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="FrhxzfWX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726835AbfLFWOb (ORCPT ); Fri, 6 Dec 2019 17:14:31 -0500 Received: from mail-pf1-f201.google.com ([209.85.210.201]:48106 "EHLO mail-pf1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbfLFWO3 (ORCPT ); Fri, 6 Dec 2019 17:14:29 -0500 Received: by mail-pf1-f201.google.com with SMTP id e62so4788594pfh.14 for ; Fri, 06 Dec 2019 14:14:29 -0800 (PST) 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=8FJHqLK+9qp1SI0ZtY8nP7Vb0Kv4oQj2LgBWqplCpRM=; b=FrhxzfWXmzsxE4agp2rhmb4i9ATROH/GqZDqVq2Imv+d8/yhy1TAupBbdgdQuSdfT5 6nQ5+3t9PECXIMWiDkrxMAiTDpvy1ngzEasXmXrAdNopBfmN/Bna9sPRCkNQn5V572bx eywVNSAedzToawJGzxolT5bl0ETab6Tw7CSJ2i0Uja/LPJMZj7f7aPe8T4bfjdxlPjQS 3rIjn9HdeJXWzsniPYQzRfVJY1BL/sjidsk9JqsZiiFE1dkWT9OuAz7rz3hw05LyvVwP aif6TsG/Uxd0YqyKA9qyIH/plzSKaLaWabPJbVwtZIh3ODY4G/YpLNqbHQXB/I8WrOae /1eQ== 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=8FJHqLK+9qp1SI0ZtY8nP7Vb0Kv4oQj2LgBWqplCpRM=; b=P/MZ48OrMU6DYNWEFjUHsHSjlQVkV44uUyLTrsBHaqRvvoOHiqCcwzSMfLSxTPJA/b KuadfhUPXjRfMWPT8M47Cq4O+J87Bx4lhlMt3ApkhBuam6JS7OCVlI31RmmF35l8hEvx YCed1R8c/H4RSnNT4TppqrplqF6g3nM5MToHD6Ik8dhhA1whYhgO1zik+g7b2Q56fbxo Mi/ZJSeUmfvmDrK8Xe6LCSKxsm7V8zQ/t/F1bdVHhF5yJbzxfiV8wJD61w7P0LR+ZiZY 8lSomxtm3BUCbm54qyJKlSmkeJkdZotPKtW+edpZ1Q4+U8UHwdMEY9kb6bo6197jn6y1 UcDg== X-Gm-Message-State: APjAAAXUiyQ7adXyRYV9xkBP4+CJzcWa8PTyptbehVDywDZXcPTpRcjT Iq9NeNtoy6Fy8yV7S2TvfemUgltL1vD+WzeOvjY= X-Google-Smtp-Source: APXvYqzqfWQ39jRufjAhL7TZCDF47F43HjTHP8BNawKKpBRXjo9R8WHVKYYkig1q6KIkZysnArdkgny3hm72jaBZ4w0= X-Received: by 2002:a65:6245:: with SMTP id q5mr6050849pgv.347.1575670468844; Fri, 06 Dec 2019 14:14:28 -0800 (PST) Date: Fri, 6 Dec 2019 14:13:49 -0800 In-Reply-To: <20191206221351.38241-1-samitolvanen@google.com> Message-Id: <20191206221351.38241-14-samitolvanen@google.com> Mime-Version: 1.0 References: <20191018161033.261971-1-samitolvanen@google.com> <20191206221351.38241-1-samitolvanen@google.com> X-Mailer: git-send-email 2.24.0.393.g34dc348eaf-goog Subject: [PATCH v6 13/15] arm64: disable SCS for hypervisor code From: Sami Tolvanen To: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland Cc: Dave Martin , Kees Cook , Laura Abbott , Marc Zyngier , 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 Reviewed-by: Kees Cook Reviewed-by: Mark Rutland --- 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)) -- 2.24.0.393.g34dc348eaf-goog