| Message ID | 20211206015903.88687-9-baolu.lu@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show
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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>,
Dmitry Osipenko <digetx@gmail.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 v3 08/18] PCI: pci_stub: Suppress kernel DMA ownership
auto-claiming
Date: Mon, 6 Dec 2021 09:58:53 +0800
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|
| Series |
Fix BUG_ON in vfio_iommu_group_notifier()
|
expand
|
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(+)