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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 E76F7C2BC73 for ; Wed, 4 Dec 2019 15:37:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B73AE2084B for ; Wed, 4 Dec 2019 15:37:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="De7wqYVN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728484AbfLDPhk (ORCPT ); Wed, 4 Dec 2019 10:37:40 -0500 Received: from mail-ot1-f67.google.com ([209.85.210.67]:46586 "EHLO mail-ot1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728293AbfLDPhk (ORCPT ); Wed, 4 Dec 2019 10:37:40 -0500 Received: by mail-ot1-f67.google.com with SMTP id g18so6644418otj.13; Wed, 04 Dec 2019 07:37:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Zsl/NYOHbe+5Z9l4Py0S0UhbStKwiCgjg78sah22X74=; b=De7wqYVNK/pvvWk9mSR7jFvEzZsynk6dJccpz3iNh+S9NEfYYXJZ2HgKfjEZv4EQYi wDRBS00PBoaVLUU0LiAuBWt5/YvRnLqEfJeH9P6vKapz84FBU72ZuyBN5c/30LTDzDCJ 1gHb1/lXcIIjFcwApdj6h0OQhhOH6yDfw6AR+6qAYwgpxyz7P2Kmuh7t4o7KDDHqxuOJ G93q2q/HVYHQi6donkp56u7EfJlWbI2VVUz8TYV9bQmEggqxfHIaX48UF4xePDzSS9IK 7Ox4iI5bfFXBmxtzlWtmOWlbZt86qRyYFoVWwqQILxhjR0CGqB3d7+OipTvbaxReczo1 ftSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Zsl/NYOHbe+5Z9l4Py0S0UhbStKwiCgjg78sah22X74=; b=t49H8fFTiNwTLQIAC+S42otqp3/3lxdhQxYAtUbKOot9txJmor+AlHq4qK65CzJUtp yevNfR/z0ufKres/KRPXhOcaxqf+pA6NXQN61wKSJQ2/IMOMf2ifqRo7R4xVzSm8DmOH RWO5sXjuBOCApaDVzCxxPZsfHVJu1xqPJ9ptaeKI/fMAjADw8/gXQjHPN4ikYv+UuN8H fNA6A40EUXy7fxStWezjd+fARqr3gL+5wnc7F+PfITtVpC3nIIatJPqFc4PAg3w86nZN 3xZcIygbbCVBn7n/fLdN16KKLEPFFb5+frKvGri8Kj8XeEzeZQR+X4M98G4zkiEg2+Yt DwOA== X-Gm-Message-State: APjAAAULCtGSBpuJCR1i2ABj/qrUTdiM5n9kWPG3unURL8aICMXp5SHP JmriJIDw6wmbM0OmbqMQquWpOLg0LFA+GGIW83A= X-Google-Smtp-Source: APXvYqwm/x9oQYj+1JqrNdG6tOLzfyWFpbaFv3VoCKTHKug5N7LCh4qvVQbuivSmaCiIIztxUB857mrUsxEcm+vS0oM= X-Received: by 2002:a9d:624e:: with SMTP id i14mr2972023otk.371.1575473859624; Wed, 04 Dec 2019 07:37:39 -0800 (PST) MIME-Version: 1.0 References: <20190113021719.46457-1-samuel@sholland.org> <20190113021719.46457-2-samuel@sholland.org> <472c5450-1b60-6ac7-b242-805c2a2f3272@arm.com> <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> In-Reply-To: <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> From: Vasily Khoruzhick Date: Wed, 4 Dec 2019 07:37:13 -0800 Message-ID: Subject: Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: arch_timer: Workaround for Allwinner A64 timer instability To: Marc Zyngier Cc: Samuel Holland , Catalin Marinas , Will Deacon , Chen-Yu Tsai , Rob Herring , Mark Rutland , Daniel Lezcano , Thomas Gleixner , devicetree , arm-linux , linux-kernel , linux-sunxi , Maxime Ripard Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 4, 2019 at 4:21 AM Marc Zyngier wrote: > > [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? I've seen it on 5.3 > 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=-0.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 68C4BC43603 for ; Wed, 4 Dec 2019 15:37:43 +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 3C15720862 for ; Wed, 4 Dec 2019 15:37:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="IxhmHFYo"; 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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Zsl/NYOHbe+5Z9l4Py0S0UhbStKwiCgjg78sah22X74=; b=QiFGqoS7E6pFaofpOHjFZANUlYsbvUlJh99cq7aQ0rvj+Tn2DAX4YCLdhBSF6aTdxH p/47u9wyEDWnNMDVur5NilXs0h7BjoEtKmyfdEUvKpfi6rbTWhcAWfIKvlPLkob41sNH QGMnmZ21oH1VU2J9g9y9JSxuOpE6fFXnEGF4v6bAvvcO0uq+5uJgks7dePT3fJ1DM+kI XvuIncABluy2h3Taz+idEuVXoQsxf5tsAkr3/O9lnK5tpGY/AOdSVUGs82zOHA6UNqfv yINzis0HGbL0V0bK/G8mwtgRSkD8GkvhP0cJqxey6qEpXqMqm3L4XQq5idknV/LwKVms O18Q== X-Gm-Message-State: APjAAAWfYaa6EUr6Rg67+HVsonglaq2+SojkAuXa9uvSLxLPVPEr1KTN hnDOo8lVv1RXmOSNN8e4xvMiMQtbqoJptaj7ycY= X-Google-Smtp-Source: APXvYqwm/x9oQYj+1JqrNdG6tOLzfyWFpbaFv3VoCKTHKug5N7LCh4qvVQbuivSmaCiIIztxUB857mrUsxEcm+vS0oM= X-Received: by 2002:a9d:624e:: with SMTP id i14mr2972023otk.371.1575473859624; Wed, 04 Dec 2019 07:37:39 -0800 (PST) MIME-Version: 1.0 References: <20190113021719.46457-1-samuel@sholland.org> <20190113021719.46457-2-samuel@sholland.org> <472c5450-1b60-6ac7-b242-805c2a2f3272@arm.com> <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> In-Reply-To: <4b922079aeed04f31ff67b3e7fb78022@www.loen.fr> From: Vasily Khoruzhick Date: Wed, 4 Dec 2019 07:37:13 -0800 Message-ID: Subject: Re: [linux-sunxi] Re: [PATCH v3 1/2] arm64: arch_timer: Workaround for Allwinner A64 timer instability To: Marc Zyngier X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191204_073740_340710_8E769E3C X-CRM114-Status: GOOD ( 13.49 ) 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 , Catalin Marinas , linux-sunxi , Daniel Lezcano , Will Deacon , linux-kernel , Maxime Ripard , Chen-Yu Tsai , Rob Herring , Thomas Gleixner , arm-linux Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Dec 4, 2019 at 4:21 AM Marc Zyngier wrote: > > [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? I've seen it on 5.3 > 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