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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 2EF53C3A59E for ; Wed, 21 Aug 2019 21:15:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0759322CF7 for ; Wed, 21 Aug 2019 21:15:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730813AbfHUVPl (ORCPT ); Wed, 21 Aug 2019 17:15:41 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:57688 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729594AbfHUVPk (ORCPT ); Wed, 21 Aug 2019 17:15:40 -0400 Received: from p5de0b6c5.dip0.t-ipconnect.de ([93.224.182.197] helo=nanos) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1i0XxB-0005fR-Ae; Wed, 21 Aug 2019 23:15:37 +0200 Date: Wed, 21 Aug 2019 23:15:36 +0200 (CEST) From: Thomas Gleixner To: Woody Suwalski cc: LKML , "Rafael J. Wysocki" Subject: Re: Kernel 5.3.x, 5.2.2+: VMware player suspend on 64/32 bit guests In-Reply-To: Message-ID: References: <2e70a6e2-23a6-dbf2-4911-1e382469c9cb@gmail.com> <11dc5f68-b253-913a-4219-f6780c8967a0@intel.com> <594c424c-2474-5e2c-9ede-7e7dc68282d5@gmail.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 20 Aug 2019, Woody Suwalski wrote: > On Thu, Aug 15, 2019 at 2:37 AM Thomas Gleixner wrote: > > On Tue, 13 Aug 2019, Woody Suwalski wrote: > > > On Mon, Aug 12, 2019 at 1:24 PM Thomas Gleixner wrote: > > > > The ACPI handler is not the culprit. This is either an emulation bug or > > > > something really strange. Can you please use a WARN_ON() if the loop is > > > > exited via the timeout so we can see in which context this happens? > > > > > > > > > > B. On 5.3-rc4 problem is gone. I guess it is overall good sign. > > > > Now the interesting question is what changed between 5.3-rc3 and > > 5.3-rc4. Could you please try to bisect that? > > > > Apparently I can not, and frustrated'ingly do not understand it. > Tried twice, and every time I get it broken to the end of bisection - > so the fixed-in-5.3-rc4 theory falls apart. Yet if I build cleanly > 5.3-rc4 or -rc5, it works OK. > Then on a 32 bit system - I first tried with a scaled-down kernel > (just with the drivers needed in the VM). That one is never working, > even in rc5. Yet the "full" kernel works OK. So now there is a config > issue variation on top of other problem? Looks like and it would be good to know which knob it is. Can you send me the two configs please? > > dpm_suspend_noirq() is called with all CPUs online and interrupts > > enabled. In that case an interrupt pending in IRR does not make any sense > > at all. Confused. > > > For now I use a timeout counter patch - and it is showing 100% irq9 > jammed and needing rescue. And I am even more confused... You're not alone, if that gives you a bit of comfort :) Thanks, tglx