Message ID | 20211128025051.355578-8-baolu.lu@linux.intel.com |
---|---|
State | New |
Headers | show
Return-Path: <linux-pci-owner@vger.kernel.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=<UNKNOWN>) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4J1tNL4WvDz9sVk for <incoming@patchwork.ozlabs.org>; Sun, 28 Nov 2021 13:53:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349323AbhK1C5I (ORCPT <rfc822;incoming@patchwork.ozlabs.org>); Sat, 27 Nov 2021 21:57:08 -0500 Received: from mga04.intel.com ([192.55.52.120]:38168 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239614AbhK1CzH (ORCPT <rfc822;linux-pci@vger.kernel.org>); Sat, 27 Nov 2021 21:55:07 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10181"; a="234533061" X-IronPort-AV: E=Sophos;i="5.87,270,1631602800"; d="scan'208";a="234533061" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2021 18:51:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,270,1631602800"; d="scan'208";a="652489029" Received: from allen-box.sh.intel.com ([10.239.159.118]) by fmsmga001.fm.intel.com with ESMTP; 27 Nov 2021 18:51:46 -0800 From: Lu Baolu <baolu.lu@linux.intel.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Joerg Roedel <joro@8bytes.org>, Alex Williamson <alex.williamson@redhat.com>, Bjorn Helgaas <bhelgaas@google.com>, Jason Gunthorpe <jgg@nvidia.com>, Christoph Hellwig <hch@infradead.org>, Kevin Tian <kevin.tian@intel.com>, Ashok Raj <ashok.raj@intel.com> Cc: Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>, Dan Williams <dan.j.williams@intel.com>, rafael@kernel.org, Diana Craciun <diana.craciun@oss.nxp.com>, Cornelia Huck <cohuck@redhat.com>, Eric Auger <eric.auger@redhat.com>, Liu Yi L <yi.l.liu@intel.com>, Jacob jun Pan <jacob.jun.pan@intel.com>, Chaitanya Kulkarni <kch@nvidia.com>, Stuart Yoder <stuyoder@gmail.com>, Laurentiu Tudor <laurentiu.tudor@nxp.com>, Thierry Reding <thierry.reding@gmail.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Jonathan Hunter <jonathanh@nvidia.com>, Li Yang <leoyang.li@nxp.com>, iommu@lists.linux-foundation.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lu Baolu <baolu.lu@linux.intel.com> Subject: [PATCH v2 07/17] PCI: pci_stub: Suppress kernel DMA ownership auto-claiming Date: Sun, 28 Nov 2021 10:50:41 +0800 Message-Id: <20211128025051.355578-8-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211128025051.355578-1-baolu.lu@linux.intel.com> References: <20211128025051.355578-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-pci.vger.kernel.org> X-Mailing-List: linux-pci@vger.kernel.org |
Series |
Fix BUG_ON in vfio_iommu_group_notifier()
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expand
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diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c index e408099fea52..14b9b9f2ad2b 100644 --- a/drivers/pci/pci-stub.c +++ b/drivers/pci/pci-stub.c @@ -36,6 +36,7 @@ static struct pci_driver stub_driver = { .name = "pci-stub", .id_table = NULL, /* only dynamic id's */ .probe = pci_stub_probe, + .suppress_auto_claim_dma_owner = true, }; static int __init pci_stub_init(void)
The pci_dma_configure() marks the iommu_group as containing only devices with kernel drivers that manage DMA. Avoid this default behavior for the pci_stub because it does not program any DMA itself. This allows the pci_stub still able to be used by the admin to block driver binding after applying the DMA ownership to vfio. Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> --- drivers/pci/pci-stub.c | 1 + 1 file changed, 1 insertion(+)