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=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 74445C34022 for ; Wed, 19 Feb 2020 07:50:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 477A92176D for ; Wed, 19 Feb 2020 07:50:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582098623; bh=n9/IYLfWjgkCKFVGCPxr4KX26RCkPAV8w7mDru6LtEM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=ZeuMh7lgBHok4h2g52CntpPAFHHPPuYZsFNd02JEXg8Gzkk3eu0mdb9dK8D5D35c1 JfPLbo4JfidOOgox3i2vkjgI7tF+6KskvzFBKSpuNxIMtIsFO/7TXUhqvRxJzHOSo0 dYRPkUtHn2erT8ldvk6ainOtzoqL6B7WyLQGOkoY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726902AbgBSHuW (ORCPT ); Wed, 19 Feb 2020 02:50:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:57132 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726664AbgBSHuV (ORCPT ); Wed, 19 Feb 2020 02:50:21 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (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 46494208E4; Wed, 19 Feb 2020 07:50:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582098621; bh=n9/IYLfWjgkCKFVGCPxr4KX26RCkPAV8w7mDru6LtEM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=vDMncoWz6cyx/LEWprHHL1KKF8u2M0zVhoV3U7QW96vnLDpV9SpUz/C8WhZ/F6KQ9 YncQJYbHErBSsNhGEwfBpLM0CHztjSaRJpeHZxAq+YnK2huwndGdG3vj4fJlNo7pip GuGWPMKe8h+xvf5GvRLEulvNK6ibg/YYZE7740ro= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1j4K7f-006RxB-Dt; Wed, 19 Feb 2020 07:50:19 +0000 Date: Wed, 19 Feb 2020 07:50:17 +0000 From: Marc Zyngier To: Sami Tolvanen Cc: Will Deacon , Catalin Marinas , Steven Rostedt , Masami Hiramatsu , Ard Biesheuvel , Mark Rutland , james.morse@arm.com, Dave Martin , Kees Cook , Laura Abbott , 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 Subject: Re: [PATCH v8 09/12] arm64: disable SCS for hypervisor code Message-ID: <20200219075017.41e17f08@why> In-Reply-To: <20200219000817.195049-10-samitolvanen@google.com> References: <20191018161033.261971-1-samitolvanen@google.com> <20200219000817.195049-1-samitolvanen@google.com> <20200219000817.195049-10-samitolvanen@google.com> Organization: Approximate X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: samitolvanen@google.com, will@kernel.org, catalin.marinas@arm.com, rostedt@goodmis.org, mhiramat@kernel.org, ard.biesheuvel@linaro.org, mark.rutland@arm.com, james.morse@arm.com, Dave.Martin@arm.com, keescook@chromium.org, labbott@redhat.com, ndesaulniers@google.com, jannh@google.com, miguel.ojeda.sandonis@gmail.com, yamada.masahiro@socionext.com, clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 18 Feb 2020 16:08:14 -0800 Sami Tolvanen wrote: > Disable SCS for code that runs at a different exception level by > adding __noscs to __hyp_text. > > Suggested-by: James Morse > Signed-off-by: Sami Tolvanen Acked-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny... 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=-5.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_2 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 385F6C34022 for ; Wed, 19 Feb 2020 07:50:30 +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 0AF952176D for ; Wed, 19 Feb 2020 07:50:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZQDnxQ4n"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vDMncoWz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0AF952176D 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:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+CCRaRXlMwsJEn2nZ6vqzsbcoONcx9utxpioyzemAMc=; b=ZQDnxQ4nHJWNtN dRnDUJzAT+9C6JPAf+kEgGDVCtuxhRMSy7N6weE7vMpWdAFchZWZgw0XraDEqeL6dCqMjDGvjL++0 xlE4SxKkEDF4/9UxAGguuAGh4MlTXdXwUAxEl6qLMg8/mj/Y8ZhSKMa4dF89dCE3zlIIJvKz16Wt+ QiQA7CPP82Y8vO5q1zsY17hfX7eqEu+i3RuQ50okoakhkatbDWSOo5puezNB+WSnxP3oz0zVgy1EX nidQk9hSLwM9xtxnQaU3Jj7CUTkBK74pkXj5MlaRKJ7DePQ+sSSv9ELiMGPiJK5MhCLiJnKUzx1wM qO2mmwolY9xAWOnf7Zyw==; 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 1j4K7k-0003WF-NC; Wed, 19 Feb 2020 07:50:24 +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 1j4K7h-0003Vr-Td for linux-arm-kernel@lists.infradead.org; Wed, 19 Feb 2020 07:50:23 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (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 46494208E4; Wed, 19 Feb 2020 07:50:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582098621; bh=n9/IYLfWjgkCKFVGCPxr4KX26RCkPAV8w7mDru6LtEM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=vDMncoWz6cyx/LEWprHHL1KKF8u2M0zVhoV3U7QW96vnLDpV9SpUz/C8WhZ/F6KQ9 YncQJYbHErBSsNhGEwfBpLM0CHztjSaRJpeHZxAq+YnK2huwndGdG3vj4fJlNo7pip GuGWPMKe8h+xvf5GvRLEulvNK6ibg/YYZE7740ro= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1j4K7f-006RxB-Dt; Wed, 19 Feb 2020 07:50:19 +0000 Date: Wed, 19 Feb 2020 07:50:17 +0000 From: Marc Zyngier To: Sami Tolvanen Subject: Re: [PATCH v8 09/12] arm64: disable SCS for hypervisor code Message-ID: <20200219075017.41e17f08@why> In-Reply-To: <20200219000817.195049-10-samitolvanen@google.com> References: <20191018161033.261971-1-samitolvanen@google.com> <20200219000817.195049-1-samitolvanen@google.com> <20200219000817.195049-10-samitolvanen@google.com> Organization: Approximate X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: samitolvanen@google.com, will@kernel.org, catalin.marinas@arm.com, rostedt@goodmis.org, mhiramat@kernel.org, ard.biesheuvel@linaro.org, mark.rutland@arm.com, james.morse@arm.com, Dave.Martin@arm.com, keescook@chromium.org, labbott@redhat.com, ndesaulniers@google.com, jannh@google.com, miguel.ojeda.sandonis@gmail.com, yamada.masahiro@socionext.com, clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200218_235021_979216_CAFE64D5 X-CRM114-Status: UNSURE ( 9.96 ) X-CRM114-Notice: Please train this message. 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 , Kees Cook , Ard Biesheuvel , Masahiro Yamada , Catalin Marinas , Jann Horn , Nick Desaulniers , linux-kernel@vger.kernel.org, Steven Rostedt , Miguel Ojeda , james.morse@arm.com, Masami Hiramatsu , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, Laura Abbott , Will Deacon , 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 On Tue, 18 Feb 2020 16:08:14 -0800 Sami Tolvanen wrote: > Disable SCS for code that runs at a different exception level by > adding __noscs to __hyp_text. > > Suggested-by: James Morse > Signed-off-by: Sami Tolvanen Acked-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel