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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C9DFC433F5 for ; Mon, 6 Dec 2021 17:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345199AbhLFR4z (ORCPT ); Mon, 6 Dec 2021 12:56:55 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:48660 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345004AbhLFR4y (ORCPT ); Mon, 6 Dec 2021 12:56:54 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 9602DB811C9; Mon, 6 Dec 2021 17:53:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56067C341C1; Mon, 6 Dec 2021 17:53:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638813203; bh=qLRTR0XEjjj57UUTMH9jGVFo9hH/vzMUqsdqSdEEGgA=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=AGHdCLlSEgloeJKS3PSKuDmWUNnN0VGIk264Q6MmMstZg3OQCqZCh/NBUBjSsRDRz eUTuc8nRR5g2ut8osXfAldNajXxB8say2gAAxuHvjo+c+DiWmxaaPc38W0h9SBY+Mt hVlU2ibQkOFAjtllgAI8rac6DDgGVSvx5YceLi31A1KsFNwqOGFLhlCeN7bpbsIFcn /Jm2rUh8WvL7hWYkvdrpFvm8RxHk75suUOiXagsrqIqQuXimvw+1kngkUb+hzw3DKR IvtEk0mucGNpeXEm4XmWFQ/VDzBlPHji4bsUtYqxv4pg75uNeUK2TjwT/OUzBHz/tO w8KZxrp2KbyNA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 13EC35C1461; Mon, 6 Dec 2021 09:53:23 -0800 (PST) Date: Mon, 6 Dec 2021 09:53:23 -0800 From: "Paul E. McKenney" To: Mark Rutland Cc: Randy Dunlap , Thomas Gleixner , Steven Rostedt , Nicolas Saenz Julienne , linux-kernel , linux-arm-kernel , rcu@vger.kernel.org, Peter Zijlstra , mtosatti , frederic , Jonathan Corbet Subject: Re: [PATCH v2] Documentation: Fill the gaps about entry/noinstr constraints Message-ID: <20211206175323.GB641268@paulmck-ThinkPad-P17-Gen-1> Reply-To: paulmck@kernel.org References: <875ys9dacq.ffs@tglx> <20211130091356.7336e277@gandalf.local.home> <878rx5b7i5.ffs@tglx> <87v9088a5q.ffs@tglx> <87ee6w83yw.ffs@tglx> <87bl2083mu.ffs@tglx> <1158239c-4e65-d3d9-41b3-4fedac856622@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 06, 2021 at 05:36:51PM +0000, Mark Rutland wrote: > On Fri, Dec 03, 2021 at 07:48:08PM -0800, Randy Dunlap wrote: > > On 12/1/21 12:35, Thomas Gleixner wrote: > > > +Aside of that many architectures have to save register state, e.g. debug or > > > > state (e.g. debug) or > > > > > +cause registers before another exception of the same type can happen. A > > > > ^^^^^ cannot parse (with or without the change to the previous line) > > I think the difficulty here is with "cause register"? That' a register which > indicates the cause of an exception, e.g. > > * MIPS has `cause` (coprocessor 0 register 13) > * arm64 / AArch64 has `ESR_ELx` (Exception Syndrome Register, ELx) > > We could probably clarify this as "exception cause registers" or "exception > status registers", if that helps? Or to make it word-by-word unambiguous, "exception-cause registers" and "exception-status registers". Thanx, Paul 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A176CC433F5 for ; Mon, 6 Dec 2021 17:55:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QEc3MENpIaMHf27W1rrHnBvjqonfG0R2SXISvLLzIJU=; b=r5A+nIqWLb9F+Z yUtsS0jcFTXc/ZteJ5BFF+ABeMEyWHGFcMwsyshAMqcd1AZS3H/M/p88+yhqRWOFoiLdcz5BciPft JNrElQLqWr80kaoHr7SapaLFF4t9oijDZfusTZxJLS+y2kraH3TKh4n5ujZVK/rAbV1YghUlxS8WQ ZM0VvFyq5h9QATooGzX/B3K5LG4l7oZ6QKpodt/f5xv14Ix+w99yAwO3gFYTlb/CHLpeNRi92VttE E0NczsaMOqDvacWy5rZ6Y6zCV6nA+BBgdcaSFrgaaUoyJKLRWHwejnhqXTMt6vHBX0uv6vtPaW3TS NhaN7s54BDYg2mFkAuNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muIB7-0059pp-Si; Mon, 06 Dec 2021 17:53:30 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1muIB3-0059ou-RC for linux-arm-kernel@lists.infradead.org; Mon, 06 Dec 2021 17:53:27 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 89C6EB811C0; Mon, 6 Dec 2021 17:53:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56067C341C1; Mon, 6 Dec 2021 17:53:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638813203; bh=qLRTR0XEjjj57UUTMH9jGVFo9hH/vzMUqsdqSdEEGgA=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=AGHdCLlSEgloeJKS3PSKuDmWUNnN0VGIk264Q6MmMstZg3OQCqZCh/NBUBjSsRDRz eUTuc8nRR5g2ut8osXfAldNajXxB8say2gAAxuHvjo+c+DiWmxaaPc38W0h9SBY+Mt hVlU2ibQkOFAjtllgAI8rac6DDgGVSvx5YceLi31A1KsFNwqOGFLhlCeN7bpbsIFcn /Jm2rUh8WvL7hWYkvdrpFvm8RxHk75suUOiXagsrqIqQuXimvw+1kngkUb+hzw3DKR IvtEk0mucGNpeXEm4XmWFQ/VDzBlPHji4bsUtYqxv4pg75uNeUK2TjwT/OUzBHz/tO w8KZxrp2KbyNA== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 13EC35C1461; Mon, 6 Dec 2021 09:53:23 -0800 (PST) Date: Mon, 6 Dec 2021 09:53:23 -0800 From: "Paul E. McKenney" To: Mark Rutland Cc: Randy Dunlap , Thomas Gleixner , Steven Rostedt , Nicolas Saenz Julienne , linux-kernel , linux-arm-kernel , rcu@vger.kernel.org, Peter Zijlstra , mtosatti , frederic , Jonathan Corbet Subject: Re: [PATCH v2] Documentation: Fill the gaps about entry/noinstr constraints Message-ID: <20211206175323.GB641268@paulmck-ThinkPad-P17-Gen-1> References: <875ys9dacq.ffs@tglx> <20211130091356.7336e277@gandalf.local.home> <878rx5b7i5.ffs@tglx> <87v9088a5q.ffs@tglx> <87ee6w83yw.ffs@tglx> <87bl2083mu.ffs@tglx> <1158239c-4e65-d3d9-41b3-4fedac856622@infradead.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211206_095326_049477_28253C2E X-CRM114-Status: GOOD ( 17.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: paulmck@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Dec 06, 2021 at 05:36:51PM +0000, Mark Rutland wrote: > On Fri, Dec 03, 2021 at 07:48:08PM -0800, Randy Dunlap wrote: > > On 12/1/21 12:35, Thomas Gleixner wrote: > > > +Aside of that many architectures have to save register state, e.g. debug or > > > > state (e.g. debug) or > > > > > +cause registers before another exception of the same type can happen. A > > > > ^^^^^ cannot parse (with or without the change to the previous line) > > I think the difficulty here is with "cause register"? That' a register which > indicates the cause of an exception, e.g. > > * MIPS has `cause` (coprocessor 0 register 13) > * arm64 / AArch64 has `ESR_ELx` (Exception Syndrome Register, ELx) > > We could probably clarify this as "exception cause registers" or "exception > status registers", if that helps? Or to make it word-by-word unambiguous, "exception-cause registers" and "exception-status registers". Thanx, Paul _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel