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=-5.7 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 7913BC433DB for ; Thu, 21 Jan 2021 14:26:10 +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 28FCB239D1 for ; Thu, 21 Jan 2021 14:26:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28FCB239D1 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=oRFpSc0x3GYUCjVkgL/eSj6L0qG14kmU8ScwKb0l5hE=; b=SRaWkhhZxjIzbfkhXvTfUEUPh cjr3wN2+XL5rU2Y63eiBdYyqNw5lv0h/pKfoQ3DZLAGCkcdk/DqfVR9vUSMdtMQZETsqQftfukNtO m+J9FWTYaMW/8EXzuTroCDZcsVhGEKBG5HPHSedxg0V7wnWwsm+WVF82FgaaM7iqQEkOidAMNkxS5 iPR5vzi3ZrEBu0FrWcumAw6REFNjWrFNpk9mtSePrXNY23G8SFbpGTFi7yXIPhZjNXTYHU+6UcXEr F8ZpDWhGjS7d8crMajvB0cHyDPGnvkmkVTDH7RRz8IZmeLtuUzoyzGUZ1PnLPxEK7eEhPXlqKykB1 L+tmezRwQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2asr-0006bx-0f; Thu, 21 Jan 2021 14:24:25 +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 1l2aso-0006b4-Di for linux-arm-kernel@lists.infradead.org; Thu, 21 Jan 2021 14:24:23 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1AFB8239D1; Thu, 21 Jan 2021 14:24:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611239061; bh=kv/pVGLXQi9SIxQZUvMuUQoER4ZiAqUomytKzezlGnU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=vDYTKC9hSClRzYZmczK2R8BY79Lab3Orwuve5YD1pgCp490UjBy8JkOsc84Urxuu/ qr5Epy/m42uLfvRCYCYUA6VN4I4iEsJOA7/5sjAEtRIK1RBvyirRtpRfXVv552CUM5 v2lamAIMN7Lsg7P/AsOgqilgH4YuKEfKz3g2axmBR/inX5knruS7iiwKS8yJNn4a7a ut47+sA7cn7X4YCj3MveUgkg3vj5e58wFIROjzP+LbZ/QvLsfz2sdRDY2aJysPSo6g c/hTcdA1iiSksiX0bAg+uJSezy6l5faY7rPR7SdbQaDyVQgndGx8IqsGlWDZQ9Ncez qM6CBMq/t16Qw== Date: Thu, 21 Jan 2021 14:23:42 +0000 From: Mark Brown To: Julien Thierry Subject: Re: [RFC PATCH 00/17] objtool: add base support for arm64 Message-ID: <20210121142342.GD4588@sirena.org.uk> References: <20210120173800.1660730-1-jthierry@redhat.com> <186bb660-6e70-6bbf-4e96-1894799c79ce@redhat.com> <6e21cd51-017e-2135-ed9d-33a60f22a457@redhat.com> MIME-Version: 1.0 In-Reply-To: <6e21cd51-017e-2135-ed9d-33a60f22a457@redhat.com> X-Cookie: Generic Fortune. 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-20210121_092422_524432_BB80E9C6 X-CRM114-Status: GOOD ( 14.75 ) 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: Mark Rutland , Michal Marek , Kees Cook , Peter Zijlstra , Catalin Marinas , Masahiro Yamada , Linux Kernel Mailing List , linux-efi , linux-hardening@vger.kernel.org, Josh Poimboeuf , Will Deacon , Ard Biesheuvel , Linux ARM Content-Type: multipart/mixed; boundary="===============3851945657157905910==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============3851945657157905910== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ZARJHfwaSJQLOEUz" Content-Disposition: inline --ZARJHfwaSJQLOEUz Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jan 21, 2021 at 02:23:53PM +0100, Julien Thierry wrote: > On 1/21/21 12:08 PM, Ard Biesheuvel wrote: > > I am not aware of any plans to enable this in GCC, but the Clang > > implementation is definitely intended for production use (it's a CFI > > feature for ROP/JOP mitigation) > I think most people interested in livepatching are using GCC built kernels, > but I could be mistaken (althought in the long run, both compilers should be > supported, and yes, I realize the objtool solution currently only would > support GCC). There definitely seem to be some users interested in both livepatch and clang built kernels so it might come up relatively quickly. --ZARJHfwaSJQLOEUz Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmAJjm4ACgkQJNaLcl1U h9A9zgf8DemVKmPSSW3tOaAAroHKKGZKezs9pF8k8n+yoIghmXnPxd9hrb57ukiw 4tsd0Hdo6TGipkLTKBKf1YiRzEVmMaaskDpl8Fw3nLEswci00beU+AFOF2j67W2Q e6BgBsvxeLbZ3Ga2JDUOFmkAWgHxfb2uPzDcMMWK4kv7aULZuRnaZkK01atGNiEI ApztA5bVxoXBfhtWTDi7mG6Z7fq90/TBnCEkSWAT8xZvzxVCZUlAOBGamkYTmJUx VEebhpacGYMGST8NW/C2AUCOfeYnGIDHpcVipkh49EjelaASMZxmnzF8mQfH6n2B Sly4xPl4R9faZqsqEKsXDfh0uKAbQQ== =CROq -----END PGP SIGNATURE----- --ZARJHfwaSJQLOEUz-- --===============3851945657157905910== 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 --===============3851945657157905910==--