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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 544F7C63798 for ; Tue, 24 Nov 2020 14:19:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D52F52076B for ; Tue, 24 Nov 2020 14:19:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="SJCrPpWU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388780AbgKXOTC (ORCPT ); Tue, 24 Nov 2020 09:19:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729239AbgKXOTB (ORCPT ); Tue, 24 Nov 2020 09:19:01 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B9EBC0613D6 for ; Tue, 24 Nov 2020 06:19:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=l8pZFbiEFpxPq1yQcg1bSYzCbo66wT2t3iINfeAQesk=; b=SJCrPpWUUyKm9dIXarGTf7mlvF 4a6hQiQ79QjZ/AFqAzD2NUK49sf9CU7pRsnLh4g5u/etlfoFVjvXVOVNVUek4sySrjgj7gY9mNMqd fx4f07hl5R+Ev5gE4Ry2yvRQK7AYANeT8H4dqfAdlDKYdBJ81SSIUZawwiP8Y4k7kej4HJOlVTszr 9ADUalDq1moioRmvaL0Soc+h0BL/jEn5wZuAFUu4ziQcASoM5oo5OZeuuFK64jsl/JHC3PRDMWPKk pcw5MN0pkg2fzQZP2nRSezKTkJFdEcm1Y9a53D8JaGuS4s3sXZGM9GIktMyxY/u3k2yPWKVSdb9P7 3vml/ZwQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1khZ9i-0002uB-AJ; Tue, 24 Nov 2020 14:18:54 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 476313062EA; Tue, 24 Nov 2020 15:18:53 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 287D7209BAB75; Tue, 24 Nov 2020 15:18:53 +0100 (CET) Date: Tue, 24 Nov 2020 15:18:53 +0100 From: Peter Zijlstra To: Sven Schnelle Cc: rafael@kernel.org, viresh.kumar@linaro.org, mingo@kernel.org, x86@kernel.org, mark.rutland@arm.com, will@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] More RCU vs idle fixes Message-ID: <20201124141853.GG2414@hirez.programming.kicks-ass.net> References: <20201120114145.197714127@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 24, 2020 at 02:47:27PM +0100, Sven Schnelle wrote: > Peter Zijlstra writes: > > > Both arm64 and s390 are tripping over arch_cpu_idle() RCU,tracing,lockdep > > interaction. While looking at that I also found fail in inte_idle. > > > > Please consider for this cycle. > > Is anyone taking this patchset? I think I'll stuff it in x86/urgent for lack of a better place. > For s390, we also need to change the > local_irq_safe/restore to the raw variants in enabled_wait() in > arch/s390/kernel/idle.c. Duh, I'll add that.