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=-4.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 C557EC2D0A8 for ; Mon, 28 Sep 2020 08:59:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 72A922158C for ; Mon, 28 Sep 2020 08:59:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601283569; bh=eEsC+7Z7kR14qvJJw+13j0Oy+Eemha+IV0JTD40rtPE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=N+ll2z3KgfXwF10iHJgDpdvs7PP8yhrDddHXOrwsyVWFNKuQtLKfnhplhHfNjPWRa PAFPcUIwOJLdfyShtY41+pdlVDwXR2LuJjDdkIj20Fg2qAjjDRxSrEVxyAOrheq7VE 11EjRJcq20ywFJ+8Elsk3yHzZLc8LjRwT/lUvWfg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726600AbgI1I72 (ORCPT ); Mon, 28 Sep 2020 04:59:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:47106 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726461AbgI1I71 (ORCPT ); Mon, 28 Sep 2020 04:59:27 -0400 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 42AE220E65; Mon, 28 Sep 2020 08:59:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601283567; bh=eEsC+7Z7kR14qvJJw+13j0Oy+Eemha+IV0JTD40rtPE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=hmVsET+ZS28yoa4xr2LE2sIGl7sWu7ZKKeMWKUEh8ui4sQMEU7LEMEFyxzAPQ1p2x QtDFIKlMq83r0cmptSQSZf1fMJ/3rega77F2aQGVYjhdo6Zrcq8BWwXl7v52Wkks6p Na0Z62SMnb1o1R+i0kNGYFUG40+bV9JGvJFy6HM4= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kMp0H-00FQrC-5T; Mon, 28 Sep 2020 09:59:25 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Mon, 28 Sep 2020 09:59:24 +0100 From: Marc Zyngier To: ito-yuichi@fujitsu.com Cc: sumit.garg@linaro.org, tglx@linutronix.de, jason@lakedaemon.net, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI In-Reply-To: References: <20200924044236.1245808-1-ito-yuichi@fujitsu.com> User-Agent: Roundcube Webmail/1.4.8 Message-ID: <498b10b51f5c961f00b3d18e17c52e94@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: ito-yuichi@fujitsu.com, sumit.garg@linaro.org, tglx@linutronix.de, jason@lakedaemon.net, catalin.marinas@arm.com, will@kernel.org, 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-09-28 03:43, ito-yuichi@fujitsu.com wrote: > Hi Marc, Sumit > > I would appreciate if you have any advice on this patch. I haven't had a chance to look into it, as I'm not even sure I'll take the core series in the first place (there are outstanding regressions I can't reproduce, let alone fix them). > > Yuichi Ito > >> -----Original Message----- >> From: Yuichi Ito >> Sent: Thursday, September 24, 2020 1:43 PM >> To: maz@kernel.org; sumit.garg@linaro.org; tglx@linutronix.de; >> jason@lakedaemon.net; catalin.marinas@arm.com; will@kernel.org >> Cc: linux-arm-kernel@lists.infradead.org; >> linux-kernel@vger.kernel.org; Ito, >> Yuichi/伊藤 有一 >> Subject: [PATCH 0/2] Enable support IPI_CPU_CRASH_STOP to be >> pseudo-NMI >> >> Enable support IPI_CPU_CRASH_STOP to be pseudo-NMI >> >> This patchset enables IPI_CPU_CRASH_STOP IPI to be pseudo-NMI. >> This allows kdump to collect system information even when the CPU is >> in a >> HARDLOCKUP state. >> >> Only IPI_CPU_CRASH_STOP uses NMI and the other IPIs remain normal >> IRQs. >> >> The patch has been tested on ThunderX. Which ThunderX? TX2 (at least the incarnation I used in the past) wasn't able to correctly deal with priorities. M. -- Jazz is not dead. It just smells funny...