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 4DBFCC4346E for ; Tue, 29 Sep 2020 10:54:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 07D73208FE for ; Tue, 29 Sep 2020 10:54:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601376893; bh=TsXfKdPzMyQ6L5OpU3cZdfk/rowKCpYM+fXLO67j8Ng=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=RiXeL/mus4Tmp5CfwNqTH+8FSHQf9R6qnLEQZH45C+eV0yCe6ayHhdBiwXMubQKJo rhk1E3NTsOXPAxBGr9go+AxdPFB888lAdt5mhIHf/VgjlaAZ1uxvkvUX+IfMU/qXSp Qhq2EF3ClHSQe6lF4FK+wNXfqCRq0AmnU9gojR1Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728214AbgI2Kyw (ORCPT ); Tue, 29 Sep 2020 06:54:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:57538 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725306AbgI2Kyv (ORCPT ); Tue, 29 Sep 2020 06:54:51 -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 19719207C4; Tue, 29 Sep 2020 10:54:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601376891; bh=TsXfKdPzMyQ6L5OpU3cZdfk/rowKCpYM+fXLO67j8Ng=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=LyvXpsNWayTtEoONSEtw+dSq2ZKj4+3V+YsP02/1v09h7mfMQeXPQ2cL1JhAZmyxe qeUwG7lbUHSKjGj3F1i7uv6RJOJqFJDoLHuDTe5gaotffANRt3GyWwBH1uM0HeSWfN zMkfXesAzdH+l2YtKphVaCvS+bvTQDwS+niV4F+8= 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 1kNDHV-00FlNL-AK; Tue, 29 Sep 2020 11:54:49 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 29 Sep 2020 11:54:49 +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> <498b10b51f5c961f00b3d18e17c52e94@kernel.org> User-Agent: Roundcube Webmail/1.4.8 Message-ID: <74f6c812041970cb8f5e8c0da22fca92@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 2020-09-29 06:50, ito-yuichi@fujitsu.com wrote: > Hi Marc [...] >> >> 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. > > I tried it with ThunderX CN8890. > If you tell me steps to reproduce the problem of TX2, I will > investigate it with TX as well. PMR_EL1 reporting fantasy values, non-uniform priority support across the interrupt classes, and generally prone to lockups. The original TX is a very different machine though (TX 1 and 2 only share the engraving of the manufacturer on the heat-spreader). M. -- Jazz is not dead. It just smells funny...