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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 89E05C2BD09 for ; Wed, 4 Dec 2019 12:21:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 60E8920674 for ; Wed, 4 Dec 2019 12:21:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575462077; bh=SO4UPO0pN1BpTj2Vj+qz2h8O3I4ExQ0WHdRywPmMRHA=; h=To:Subject:Date:From:Cc:In-Reply-To:References:List-ID:From; b=RZQDaV4u1tsnIH1esnEHZ+/Fd3AHvwjdq1wkAg7sVsjXvj045tYI/c2pxwqrjHqn/ FqlgbQAFb97Bk7Wka5Cm2RK8tEdSN809G9ADFF3dvWqrDRddMaX5HF6JraykaljqYN kWK86Moa6PU+XikIOIW/UrdHxlV0+N1BtGbrm3hI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727755AbfLDMVQ (ORCPT ); Wed, 4 Dec 2019 07:21:16 -0500 Received: from inca-roads.misterjones.org ([213.251.177.50]:43763 "EHLO inca-roads.misterjones.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727445AbfLDMVQ (ORCPT ); Wed, 4 Dec 2019 07:21:16 -0500 Received: from www-data by cheepnis.misterjones.org with local (Exim 4.80) (envelope-from ) id 1icTeU-0002F5-09; Wed, 04 Dec 2019 13:21:06 +0100 To: Subject: Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: =?UTF-8?Q?arch=5Ftimer=3A=20Workaround=20for=20Allwinner=20A=36=34=20time?= =?UTF-8?Q?r=20instability?= X-PHP-Originating-Script: 0:main.inc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Wed, 04 Dec 2019 12:21:05 +0000 From: Marc Zyngier Cc: , Samuel Holland , Catalin Marinas , Will Deacon , Maxime Ripard , Chen-Yu Tsai , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , devicetree , arm-linux , linux-kernel , linux-sunxi In-Reply-To: References: <20190113021719.46457-1-samuel@sholland.org> <20190113021719.46457-2-samuel@sholland.org> <472c5450-1b60-6ac7-b242-805c2a2f3272@arm.com> Message-ID: <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> X-Sender: maz@kernel.org User-Agent: Roundcube Webmail/0.7.2 X-SA-Exim-Connect-IP: X-SA-Exim-Rcpt-To: anarsoul@gmail.com, marc.zyngier@arm.com, samuel@sholland.org, catalin.marinas@arm.com, will.deacon@arm.com, maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org, mark.rutland@arm.com, daniel.lezcano@linaro.org, tglx@linutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [please note that my email address has changed] On 2019-12-04 04:18, Vasily Khoruzhick wrote: [...] > Unfortunately this patch doesn't completely eliminate the jumps. > There > have been reports from users who still saw 95y jump even with the > patch applied. > > Personally I've seen it once or twice on my Pine64-LTS. > > Looks like we need bigger hammer. Does anyone have any idea what it > could be? Which kernel version did you see this happening on? M. -- Jazz is not dead. It just smells funny... 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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 73AA3C43603 for ; Wed, 4 Dec 2019 12:21:19 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 479EE20833 for ; Wed, 4 Dec 2019 12:21:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lfq4ayha" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 479EE20833 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+infradead-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=bombadil.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:From:Date: MIME-Version:Subject:To:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1ncaHTlsLXAznFIOkP357hnhFtSZcLUp6PuPkp3t9Dc=; b=lfq4ayhay1Kup3Nhwl/nN1Dp+ Sb7LlucQpAMPBIRjM9bd8yXaSiVjWcNgcgfwpjBZvaP5fhydqwonWUL5kfbaj7xy7T8hNOqh3YF8h F0z9YTP79OLwk6RAhMKwb97s9KB42V5Vx+vkP4SjfYFbzROsv+FxwY/l3B1GmFnEL4fRfTVjNtAB5 8IzFCF9FK4NnGKMVOiEVCnzSWEax5ilO1fl3+j5Mv+TfwiZY5GrhKBK9JrFBD1Yw6ykeSx9jC3D8Z JSaQzKUFOVYnlnmFLwdYDI26i0u0d9aQVe3+zC/cz8/3gaL+W5arCq9jAD8cmrCxXqXu20ZdQH3qs CDVLUeSyg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1icTeg-0002cp-Bf; Wed, 04 Dec 2019 12:21:18 +0000 Received: from inca-roads.misterjones.org ([213.251.177.50]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1icTec-0002cO-JJ for linux-arm-kernel@lists.infradead.org; Wed, 04 Dec 2019 12:21:16 +0000 Received: from www-data by cheepnis.misterjones.org with local (Exim 4.80) (envelope-from ) id 1icTeU-0002F5-09; Wed, 04 Dec 2019 13:21:06 +0100 To: Subject: Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: =?UTF-8?Q?arch=5Ftimer=3A=20Workaround=20for=20Allwinner=20A=36=34=20time?= =?UTF-8?Q?r=20instability?= X-PHP-Originating-Script: 0:main.inc MIME-Version: 1.0 Date: Wed, 04 Dec 2019 12:21:05 +0000 From: Marc Zyngier In-Reply-To: References: <20190113021719.46457-1-samuel@sholland.org> <20190113021719.46457-2-samuel@sholland.org> <472c5450-1b60-6ac7-b242-805c2a2f3272@arm.com> Message-ID: <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> X-Sender: maz@kernel.org User-Agent: Roundcube Webmail/0.7.2 X-SA-Exim-Connect-IP: X-SA-Exim-Rcpt-To: anarsoul@gmail.com, marc.zyngier@arm.com, samuel@sholland.org, catalin.marinas@arm.com, will.deacon@arm.com, maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org, mark.rutland@arm.com, daniel.lezcano@linaro.org, tglx@linutronix.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on cheepnis.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191204_042114_780470_2F959040 X-CRM114-Status: UNSURE ( 9.48 ) X-CRM114-Notice: Please train this message. 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: Mark Rutland , devicetree , Samuel Holland , marc.zyngier@arm.com, Catalin Marinas , linux-sunxi , Daniel Lezcano , Will Deacon , linux-kernel , Maxime Ripard , Chen-Yu Tsai , Rob Herring , Thomas Gleixner , arm-linux Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org [please note that my email address has changed] On 2019-12-04 04:18, Vasily Khoruzhick wrote: [...] > Unfortunately this patch doesn't completely eliminate the jumps. > There > have been reports from users who still saw 95y jump even with the > patch applied. > > Personally I've seen it once or twice on my Pine64-LTS. > > Looks like we need bigger hammer. Does anyone have any idea what it > could be? Which kernel version did you see this happening on? M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel