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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 98766C28CBC for ; Wed, 6 May 2020 19:53:30 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4BB6920747 for ; Wed, 6 May 2020 19:53:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="mw3C/5kd"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="1M5LXcsr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BB6920747 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=NHW1ePsb5niEk8QwRHYcLbfhHlqrxsS7JwfJvgjmjLM=; b=mw3C/5kdsYTHkn dTJboh48tMj298mJvUmJ8tGP0jt1YwVKgfHjV1qZSOjeATT7LHGCIxkCi8mZJJGsExC0FnzrL/L88 JT8bAylwkcV5MqCb3WCc0bf4Xx4uLkSIahQ0SNb9vi6guqxrOtSRLex3p+6AtBshXu/tA+1EDNBQg AcZpwQ0nY8BivDTI1ELmlBdk7vy/xmzoQ2swulU+n+lbeym9q/dSENXr76Z1Tujc2HEVyc8T/duvX AcPR329JeiX4bod2FICk2KqheQ18xPaNhKq7cwlGzai1XHo+k95/vHoNzloQPEILKWkn/xQ2fIdGr Kq2O6RgeO2hHxdkz8FYw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWQ6g-0005ih-U4; Wed, 06 May 2020 19:53:26 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWQ5T-0004A6-8x for linux-arm-kernel@lists.infradead.org; Wed, 06 May 2020 19:52:12 +0000 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E5BAB2075E; Wed, 6 May 2020 19:52:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588794729; bh=KwxpZ54ywzUVQPy0HIOe2QnfzjEmt4I8q10FbJA65Gg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1M5LXcsrJLM0ScAYdGo4aTigUUL4pAb+50XNWRhx6KHD4kt1f1M51fpoprhtRQD22 2esG9Zn6z/z2XTX1H5L5GF4abs8jugWxTqMqgtemWF1Ccqah1bUJMkv3Kl6y+j4dqe oVKH15CJhcqHUmVEo/uA55IdC0o1tQK/h42nwe0I= From: Mark Brown To: Vincenzo Frascino , Will Deacon , Catalin Marinas Subject: [PATCH v3 06/11] arm64: mm: Mark executable text as guarded pages Date: Wed, 6 May 2020 20:51:33 +0100 Message-Id: <20200506195138.22086-7-broonie@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200506195138.22086-1-broonie@kernel.org> References: <20200506195138.22086-1-broonie@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200506_125211_336713_841D8830 X-CRM114-Status: GOOD ( 10.75 ) 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: Kees Cook , Daniel Borkmann , Jean-Philippe Brucker , Mark Brown , Amit Kachhap , Dave Martin , 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+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org When the kernel is built for BTI and running on a system which supports make all executable text guarded pages to ensure that loadable module and JITed BPF code is protected by BTI. Signed-off-by: Mark Brown Reviewed-by: Catalin Marinas --- arch/arm64/mm/pageattr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c index 250c49008d73..bde08090b838 100644 --- a/arch/arm64/mm/pageattr.c +++ b/arch/arm64/mm/pageattr.c @@ -126,13 +126,13 @@ int set_memory_nx(unsigned long addr, int numpages) { return change_memory_common(addr, numpages, __pgprot(PTE_PXN), - __pgprot(0)); + __pgprot(PTE_MAYBE_GP)); } int set_memory_x(unsigned long addr, int numpages) { return change_memory_common(addr, numpages, - __pgprot(0), + __pgprot(PTE_MAYBE_GP), __pgprot(PTE_PXN)); } -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel