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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF67FC433F5 for ; Sat, 18 Dec 2021 10:25:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229718AbhLRKZR (ORCPT ); Sat, 18 Dec 2021 05:25:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229536AbhLRKZQ (ORCPT ); Sat, 18 Dec 2021 05:25:16 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 834D4C061574; Sat, 18 Dec 2021 02:25:16 -0800 (PST) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1639823115; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=nl4ddDnB1oKo0fcoNLd0K0Xuyht31044PvDVab+sRz0=; b=tn5AlMplZSyHPZ4eu4NMTH2tosi8XfO1/mNklSs+ImTlR8P5gfKJgKJLi6NJ4TFAklevD0 1avFcMo8k3hGWDd1Iy/rc1ZPeM7eACV1BbuVnX4QY/eXDhd48j/Sh4CvcSDSL9IbisUp7z caDqaSpU9ud+i2NkshpSak1RSaSSAW8O+tSdpPZC1vhiTXp+kGqQePG8eL1c519ZMa10bj 4A/PikhGc/SgM12CbM14omQUZtwMCPY58ymXGe2D8aFAWliD8DPNhbbTAoxPao+HsDqHhF X3Af3aTvpYn3Z94vxqiwZNOhBtC+RdSsTPCSCauo8T9TOXtM5vssh7kfd7kvGQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1639823115; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=nl4ddDnB1oKo0fcoNLd0K0Xuyht31044PvDVab+sRz0=; b=rrfck+zS5tliLA0jRIoJ5g0PCCswYFJD7whCSlQHRXayW7rMo7mOMzACWAo8/AkVTaI5km I03oaHuan7mQiiAA== To: Nathan Chancellor Cc: LKML , Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Cedric Le Goater , Greg Kroah-Hartman , Juergen Gross , xen-devel@lists.xenproject.org, Arnd Bergmann , Michael Ellerman , Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org, Bjorn Helgaas , Stuart Yoder , Laurentiu Tudor , Nishanth Menon , Tero Kristo , Santosh Shilimkar , linux-arm-kernel@lists.infradead.org, Vinod Koul , dmaengine@vger.kernel.org, Mark Rutland , Will Deacon , Robin Murphy , Joerg Roedel , iommu@lists.linux-foundation.org, Jassi Brar , Peter Ujfalusi , Sinan Kaya Subject: Re: [patch V3 28/35] PCI/MSI: Simplify pci_irq_get_affinity() In-Reply-To: References: <20211210221642.869015045@linutronix.de> <20211210221814.900929381@linutronix.de> Date: Sat, 18 Dec 2021 11:25:14 +0100 Message-ID: <87v8zm9pmd.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Fri, Dec 17 2021 at 15:30, Nathan Chancellor wrote: > On Fri, Dec 10, 2021 at 11:19:26PM +0100, Thomas Gleixner wrote: > I just bisected a boot failure on my AMD test desktop to this patch as > commit f48235900182 ("PCI/MSI: Simplify pci_irq_get_affinity()") in > -next. It looks like there is a problem with the NVMe drive after this > change according to the logs. Given that the hard drive is not getting > mounted for journald to write logs to, I am not really sure how to get > them from the machine so I have at least taken a picture of what I see > on my screen; open to ideas on that front! Bah. Fix below. Thanks, tglx --- diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c index 71802410e2ab..9b4910befeda 100644 --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -1100,7 +1100,7 @@ EXPORT_SYMBOL(pci_irq_vector); */ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr) { - int irq = pci_irq_vector(dev, nr); + int idx, irq = pci_irq_vector(dev, nr); struct msi_desc *desc; if (WARN_ON_ONCE(irq <= 0)) @@ -1113,7 +1113,10 @@ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr) if (WARN_ON_ONCE(!desc->affinity)) return NULL; - return &desc->affinity[nr].mask; + + /* MSI has a mask array in the descriptor. */ + idx = dev->msi_enabled ? nr : 0; + return &desc->affinity[idx].mask; } EXPORT_SYMBOL(pci_irq_get_affinity);