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=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 E68F2C433DB for ; Mon, 8 Feb 2021 15:08:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 98A3E64EE4 for ; Mon, 8 Feb 2021 15:08:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 98A3E64EE4 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+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=merlin.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=fRAMPSCx0vqptiSYdjMDhNGIvjcZh6D9v4Y7RDVUqBI=; b=kiJpbt4d4lzsmjt1KuT//JyL7 +jr+64A8ILGur5RlYbj6sS9D0ZutMwtMKaUyuIweFw+6SEJz1Z5ffBD1IYNw+DPX2BPMhu50Uk75F eQmE8pZwJYm4AjDL6PPijedqu2BbsvymqwO9IwlWTWXW4TJCQbm/BhJMjfyihMYd5EqcGHnE1qIhv /EzltQeCBHuAZt+5lwT5idLcySxoLZqHVQurCaM/NSCH8M2kuWdQfukkpX7/+q4FpBKqfT8PKVFxQ Ef7Rs32Zs+GbLrGtjq8zFudsHTFwbtYgL66OIQkY07wQqlckFEB6RY52SB3IZTAR+Kxqp8His+KMs RST9s9ocg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l988C-0003yG-86; Mon, 08 Feb 2021 15:07:16 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l9889-0003wt-EL for linux-arm-kernel@lists.infradead.org; Mon, 08 Feb 2021 15:07:14 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id E794B64ED0; Mon, 8 Feb 2021 15:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612796832; bh=SzoMfGhQ73BT9IYgRtvxL+f1MVR+LQyod41TuJNY50o=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vCVlIjqjklXZMQK3Bqedb4+7TjFwpMhDoPd6bxwmTgQYhi0sHoiCpaQcXBhQpSDu6 yC08+LDN/uQkpidpcnmuzFJXFnb0Cdl0HwoTXDClbThiHw0CfrdQOvLXzNhAU7IxW/ zc4/RF8PrSPYKM3ix9q47ejYMob4Y3r81/kVCvzfpC9dt/of6x/Is713aMIvv1v3Fp D58zNb33LDgNXI5sE7mlYydDhlHQ88b2gN4QJdR5ILFBNpJarCXelq+hIyiF23uMfu fOyl+T2r60jbdFBbSc9nM+K1OrL1uh7C+oAVG9NFRsii43GGEPj+sSzkcF2XjRKTCE 6xpva0eqawd0w== Date: Mon, 8 Feb 2021 15:06:20 +0000 From: Mark Brown To: Dave Martin Subject: Re: [PATCH] arm64: bti: Set PROT_BTI on all BTI executables mapped by the kernel Message-ID: <20210208150620.GG8645@sirena.org.uk> References: <20210205173837.39315-1-broonie@kernel.org> <20210208145315.GE21837@arm.com> MIME-Version: 1.0 In-Reply-To: <20210208145315.GE21837@arm.com> X-Cookie: You will triumph over your enemy. User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210208_100713_579654_D425CF6E X-CRM114-Status: GOOD ( 12.16 ) 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: Mark Rutland , libc-alpha@sourceware.org, Kees Cook , Catalin Marinas , Jeremy Linton , Will Deacon , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============7275514327464344721==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============7275514327464344721== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="iJXiJc/TAIT2rh2r" Content-Disposition: inline --iJXiJc/TAIT2rh2r Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Feb 08, 2021 at 02:53:16PM +0000, Dave Martin wrote: > Question: will this change prevent BTI executables from working under a > non-BTI-aware ld.so? And do we care? (I think "probably not" for both, > but I'd be interested in others' views.) Yes, I'd expect that we'd end up allowing a BTIed main executable without a BTI ld.so. We already have the case where we will enable BTI for the vDSO even if nothing outside the kernel supports BTI and BTI is intended to interwork happily so I'd be surprised if there were problems. --iJXiJc/TAIT2rh2r Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmAhU2wACgkQJNaLcl1U h9AkDwf/e7zcRZjQLbLr10J8pAR1wxOT34hfKwcPW2p4eKIKhhyoGlQS0kEK7bXr wTnt50OCrSAQ63L1WJnljLdmfHkAlGJX5d+ypBpGFG4yrRT0gNyKTXa/CoFuxjWP 02JeGY6wasWJQjaRkQTftMXVpivq4UnqskJmvPUZlX3KOH9yJC9RvDPi/t8GNAdW fvzUMWPbG9OoLOJZnCYY9oXklXnEUMGCH7fPqIqwHYJQteIFhDW0aj/UkIXufrr+ 8/uENqnx6uOG332vmYdWyjs0RU8xVR2gRBrYS8c3vxJi1I80kpKwSAeEIJ+chFrX fCThfGbowOmPKqx0XoinAUn48h58mQ== =PvXI -----END PGP SIGNATURE----- --iJXiJc/TAIT2rh2r-- --===============7275514327464344721== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============7275514327464344721==--