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 smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8A36C433F5 for ; Sat, 18 Dec 2021 19:05:17 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 5B39341F7C; Sat, 18 Dec 2021 19:05:17 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hjzG_e88mcT6; Sat, 18 Dec 2021 19:05:16 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id 2DDCC41F1D; Sat, 18 Dec 2021 19:05:16 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id DDA15C002F; Sat, 18 Dec 2021 19:05:15 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 90EFDC0012 for ; Sat, 18 Dec 2021 19:05:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 6F0FC400C5 for ; Sat, 18 Dec 2021 19:05:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=kernel.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nfuukevuJMFk for ; Sat, 18 Dec 2021 19:05:13 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by smtp2.osuosl.org (Postfix) with ESMTPS id 3D9FD4000B for ; Sat, 18 Dec 2021 19:05:13 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 5D7DCB80781; Sat, 18 Dec 2021 19:05:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1B24C36AE1; Sat, 18 Dec 2021 19:05:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639854309; bh=I6eVKACPJvnI+llvjluP6wdaS6TfkgpPNWmOCTJo2Tw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=UMWo6BEBXL2vg9tHjb81KQokUbnD5ds+HV7ckML33awGfTpej3ik5Kh3h6cfpyyqb iFD4s+bZZ21aukh38a1Cdxv3Q680qbPDCrFRz4IUjxJcGtElf80NOxI08WBU35o5KO DNmZrv9Ka1wwC0RRN+bNzFNGCbR++Trade1JV0IXvYj4pEQ88pbWel1kl4y4dka9Vy v30sM76UJThM+xQ2PiEuVOz+Jtb0pMSsUUbW+ySVU2WJmK0RZD3dGbXyS/PYo1GOwF IJYYSA0Plrin3iwRee9bWx/w6bJtImnOGvLxXhdQqwr2xAa+xaDpfppDhnDsxbFplJ vGcX7+wVGtViQ== Date: Sat, 18 Dec 2021 12:04:59 -0700 From: Nathan Chancellor To: Thomas Gleixner Subject: Re: [patch V3 28/35] PCI/MSI: Simplify pci_irq_get_affinity() Message-ID: References: <20211210221642.869015045@linutronix.de> <20211210221814.900929381@linutronix.de> <87v8zm9pmd.ffs@tglx> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <87v8zm9pmd.ffs@tglx> Cc: Nishanth Menon , Mark Rutland , Stuart Yoder , Benjamin Herrenschmidt , Will Deacon , Ashok Raj , Michael Ellerman , Jassi Brar , Sinan Kaya , iommu@lists.linux-foundation.org, Peter Ujfalusi , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org, Jason Gunthorpe , linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, Kevin Tian , Arnd Bergmann , Robin Murphy , Alex Williamson , Cedric Le Goater , Santosh Shilimkar , Bjorn Helgaas , Megha Dey , Juergen Gross , Tero Kristo , Greg Kroah-Hartman , LKML , Vinod Koul , Marc Zygnier , dmaengine@vger.kernel.org, linuxppc-dev@lists.ozlabs.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Sat, Dec 18, 2021 at 11:25:14AM +0100, Thomas Gleixner wrote: > 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. Tested-by: Nathan Chancellor > 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); > > _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu