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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,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 6A765CA9EC4 for ; Wed, 30 Oct 2019 07:33:59 +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 35F732054F for ; Wed, 30 Oct 2019 07:33:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ALhkn0Nq"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=posteo.de header.i=@posteo.de header.b="p1qfxpx6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35F732054F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=posteo.de 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-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:References:To:From:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ciwlFa6slIwmV0FwSnrnO/TgOvDaGubPAzYx2LXxb0c=; b=ALhkn0NqIsw0OQ 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bh=nifect0wzKlaGO4/RODKly3/EiwAvcvo65n8B4dh7jM=; h=Subject:From:To:Cc:Openpgp:Autocrypt:Date:From; b=p1qfxpx65fmDk/NUskZLZpsGbvs1lPwxr4uba88I0700F5kS5Djd1c/1QThhHacLg pP/x/hVa+slZwP4l1Bb7sez+6FHKu37hgBk/TC3nBxIBhF6wlZFv4T8GiDwv6HjI+B dF1iukgYUL05YNEm21d09nGj9GOcFAMsdtpBkVVcGaFURG9VpbOEssmZXpB8w6Z09q Wec4xzFFnQBHiBw7dC97vLTI1mi9SV2H83f72KKCSZRSTIlhSD9YGOckQ0EIvJpstS 7YSoPChYP56X4uCXJKaBWDKRIz6Co0ZyeaWGzvJ96C0qOZEWtM+CdUATwJ3S1rEqS8 wdBfZEhQNU2SA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4730Z14DHtz6tq7; Wed, 30 Oct 2019 08:33:45 +0100 (CET) Subject: Re: [RFC 0/2] Add workaround for core wake-up on IPI for i.MX8MQ From: Martin Kepplinger To: Abel Vesa , Rob Herring , Mark Rutland , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Thomas Gleixner , Marc Zyngier , Lucas Stach , Bai Ping , Lorenzo Pieralisi , Leonard Crestez References: <20190610121346.15779-1-abel.vesa@nxp.com> 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X-CRM114-Status: GOOD ( 15.88 ) 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: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, Carlo Caione 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 30.10.19 07:11, Martin Kepplinger wrote: > On 23.06.19 13:47, Martin Kepplinger wrote: >> On 10.06.19 14:13, Abel Vesa wrote: >>> This is another alternative for the RFC: >>> https://lkml.org/lkml/2019/3/27/545 >>> >>> This new workaround proposal is a little bit more hacky but more contained >>> since everything is done within the irq-imx-gpcv2 driver. >>> >>> Basically, it 'hijacks' the registered gic_raise_softirq __smp_cross_call >>> handler and registers instead a wrapper which calls in the 'hijacked' >>> handler, after that calling into EL3 which will take care of the actual >>> wake up. This time, instead of expanding the PSCI ABI, we use a new vendor SIP. >>> >>> I also have the patches ready for TF-A but I'll hold on to them until I see if >>> this has a chance of getting in. >> > > Hi Abel, > > Running this workaround doesn't seem to work anymore on 5.4-rcX. Linux > doesn't boot, with ATF unchanged (includes your workaround changes). I > can try to add more details to this... > When I run this change instead: https://source.puri.sm/Librem5/linux-next/commit/e59807ae0e236512761b751abc84a9b129d7fcda (again, with the same ATF) Linux 5.4 boots, but simply doesn't load a cpuidle driver (cpu-sleep; and cpuidle in /sys/devices/system/cpu/cpu0). Still, since this is starting with 5.4-rcX, my previous questions stay the same :) thanks, martin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel