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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 9FFE8C64E90 for ; Mon, 30 Nov 2020 11:24:54 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 252D3207F7 for ; Mon, 30 Nov 2020 11:24:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="dmtLlyzr"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="1InaL2QV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 252D3207F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject: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=KincTWedSPAbxl2y4EQItDiKGcjoHoGvGTbjj9rxQkA=; b=dmtLlyzrfYh83SC75nwICwgTc BTAjU4Y7f/QSE073m1rjLDWZSwz33COsZylVLPk5tP4rhL27Ms0gbq4cn233XekDdbFplMhrwPYtC Vm0K1eaWxsUJzkRt0JNe3cYoHkWYtT1NGyOdxR441TnUJN6/TvAZ6ebEJu+8zcE1bG5vYl5csdKdy w1P2v9fUPKxV9DkL2I3Sphple47p9UBj4IFMDAXSyAR5pXcyD67YLWPPtBMhc8nhJY7BOGgnQHS/R WqJe38e1DtxjRGRI8aVEgkF/WsC38S9r3DMKjVCFKhK6Cs7UxALu2cVbJIV0yspQZnhz5T7irIcbY uI1AFUtFA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjhHX-0003RJ-G3; Mon, 30 Nov 2020 11:23:47 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjhHS-0003PJ-BN for linux-arm-kernel@lists.infradead.org; Mon, 30 Nov 2020 11:23:43 +0000 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (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 CFA60207BC; Mon, 30 Nov 2020 11:23:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606735421; bh=d2GCJV7EgBVrGAOGYQ1YZM2BxS6HCIGRMgk1+wDiweU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1InaL2QVXaHwnJ0g9rvkeYOam3UatrsIt4BgT9IHiqI0gJRPlbReqQMi8xdlTkY0J IEy7VII3xIdyfF2OJrBA/AttE2XG9RK/kHE6PHPcWB3XEkulr3w7vb/XpAsbZQjuzn i1356GGGrWcwW9cFsiv8gp/gUHn5BC2/PU7G4AgI= Date: Mon, 30 Nov 2020 11:23:36 +0000 From: Will Deacon To: Mark Rutland Subject: Re: [PATCH 00/11] arm64: entry lockdep/rcu/tracing fixes Message-ID: <20201130112336.GF24098@willie-the-truck> References: <20201126123602.23454-1-mark.rutland@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201126123602.23454-1-mark.rutland@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201130_062342_669762_69BBC756 X-CRM114-Status: GOOD ( 14.70 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: elver@google.com, paulmck@kernel.org, peterz@infradead.org, catalin.marinas@arm.com, james.morse@arm.com, linux-arm-kernel@lists.infradead.org, dvyukov@google.com 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 Hi Mark, Thanks for doing this. On Thu, Nov 26, 2020 at 12:35:51PM +0000, Mark Rutland wrote: > Dmitry and Marco both reported some weirdness with lockdep on arm64 erroneously > reporting the hardware IRQ state, and inexplicable RCU stalls: > > https://lore.kernel.org/r/CACT4Y+aAzoJ48Mh1wNYD17pJqyEcDnrxGfApir=-j171TnQXhw@mail.gmail.com > https://lore.kernel.org/r/20201119193819.GA2601289@elver.google.com > > Having investigated, I believe that this is largely down to the arm64 entry > code not correctly managing RCU, lockdep, irq flag tracing, and context > tracking. This series attempts to fix those cases, and I've Cc'd folk from the > previous threads as a heads-up. I've left some _minor_ comments on a few of the patches, and there was a build failure in the SDEI code, as you know. Please can you spin a quick v2 so that I can get this into linux-next ASAP? Cheers, Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel