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 36492C433EF for ; Mon, 6 Dec 2021 17:38:13 +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: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:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=eji5KTGyvo7IEEqwZc4xmLLHHwbFZ74sTaYoYK9vECw=; b=0Pf/5U5ZZHfyks 7CRcOysix2y3EpfsNIH0uFXgz8G4lYm1VZa1PZPl4R8Bzl3jAn5Yl2YOfU7OKQstcSPggfVmWjX0F CJejgzjyfZaclGuu0myto5QNKKHA80i6pEnBPpasCEVm8u3aeNF1jkIOOWjwp/DcOBkMX9k4yaMFz qdhjIL/Ggq4qlf5hyq0fwOWjlJ2/ROlz/S5Q7LQGcKBT4g6bo87Pgc0BX0At19DLnKMTcSfXErOPg pSo/tSNZC7SOpDvcP9OCUkXvwlX0w3AslMlN8mW1GRHikgU/B35JOtw/OKNvQ27KccAqcCTCOmXcX kFuSyc0/wOsbvMr/155w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muHvB-0055wy-35; Mon, 06 Dec 2021 17:37:01 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1muHv7-0055vv-E2 for linux-arm-kernel@lists.infradead.org; Mon, 06 Dec 2021 17:36:58 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 409CD1042; Mon, 6 Dec 2021 09:36:56 -0800 (PST) Received: from FVFF77S0Q05N (unknown [10.57.65.75]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 56D283F73B; Mon, 6 Dec 2021 09:36:54 -0800 (PST) Date: Mon, 6 Dec 2021 17:36:51 +0000 From: Mark Rutland To: Randy Dunlap Cc: Thomas Gleixner , Steven Rostedt , Nicolas Saenz Julienne , linux-kernel , linux-arm-kernel , rcu@vger.kernel.org, Peter Zijlstra , paulmck@kernel.org, mtosatti , frederic , Jonathan Corbet Subject: Re: [PATCH v2] Documentation: Fill the gaps about entry/noinstr constraints Message-ID: References: <8719ad46cc29a2c5d7baac3c35770e5460ab8d5c.camel@redhat.com> <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: <1158239c-4e65-d3d9-41b3-4fedac856622@infradead.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211206_093657_541739_8C7D4FE5 X-CRM114-Status: GOOD ( 10.45 ) 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: , 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 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? Thanks, Mark. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel