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[2620:137:e000::1:20]) by mx.google.com with ESMTP id h3-20020a0564020e8300b00458ab54baa5si2943620eda.503.2022.10.27.17.32.10; Thu, 27 Oct 2022 17:32:34 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=AzadYNM6; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234327AbiJ1Aap (ORCPT + 99 others); Thu, 27 Oct 2022 20:30:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233884AbiJ1Aan (ORCPT ); Thu, 27 Oct 2022 20:30:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38E8E5BC92 for ; Thu, 27 Oct 2022 17:30:42 -0700 (PDT) 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 dfw.source.kernel.org (Postfix) with ESMTPS id C89576255E for ; Fri, 28 Oct 2022 00:30:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D56AC43470; Fri, 28 Oct 2022 00:30:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666917041; bh=1cgQsn8Dl8oXXAx8gvKuL8W/RjgtqyJAH9sgnpZyd8Y=; h=Date:From:To:CC:Subject:In-Reply-To:References:From; b=AzadYNM69bZgFK5FQbyUM3syPXPVbs+PDGuRBl8e/w7FuXXt7a5R37YusxtHWZBb/ r7jrETa6edX5JkceiAvS9MkzI3q7Ga/0Q/Jt2MLvYdOtjjkfozqftAd78QlTKQ0Bu8 tSTgPy/UX5XNhskAR5OtuWoroldW3Zd8Bpup1pGTCKtpSTiKeu13HId2RAVL0YUlaA t97L5UvVKFv/3h7X2BuENXopk1uM32aBnbfgys8667lOutidYRYRMRJp80qJSkripQ jhenbmDEqIv6LjX7DPaNYb67wxDT9l+x0sIjhmp+tArSD5E8cBDX6MVuL91hcIjotU QjD+zm3r+JQ5g== Date: Fri, 28 Oct 2022 01:30:34 +0100 From: Conor Dooley To: Samuel Holland , Palmer Dabbelt , apatel@ventanamicro.com CC: daniel.lezcano@linaro.org, tglx@linutronix.de, aou@eecs.berkeley.edu, atishp@atishpatra.org, dmitriy@oss-tech.org, Paul Walmsley , linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: =?US-ASCII?Q?Re=3A_=5BPATCH=5D_clocksource/drivers/riscv=3A?= =?US-ASCII?Q?_Events_are_stopped_during_CPU_suspend?= User-Agent: K-9 Mail for Android In-Reply-To: <40abce35-b8de-cd5c-f544-fcf344e7057c@sholland.org> References: <40abce35-b8de-cd5c-f544-fcf344e7057c@sholland.org> Message-ID: <6354C70F-86C7-430D-AF0A-3483B772B02C@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28 October 2022 00:41:45 IST, Samuel Holland wr= ote: > >I still don't see why you consider this patch to have broken anything=2E >Can anyone explain why getting an RCU stall is better than not getting on= e? Taking that to the extreme, why even have RCU stall detection at all? It's= not a case of with the patch the system works fine and without it there ar= e stalls=2E With the patch, the system completely locks up during boot and = never makes progress=2E I think I've done a bad job of getting across that = the system just dies during boot=2E (Apologies for formatting, mobile=2E=2E=2E)