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 [thread overview]
Message-ID: <20211128025051.355578-8-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20211128025051.355578-1-baolu.lu@linux.intel.com>
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(+)
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)
--
2.25.1
next prev parent reply other threads:[~2021-11-28 2:53 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-28 2:50 [PATCH v2 00/17] Fix BUG_ON in vfio_iommu_group_notifier() Lu Baolu
2021-11-28 2:50 ` [PATCH v2 01/17] iommu: Add device dma ownership set/release interfaces Lu Baolu
2021-11-28 2:50 ` [PATCH v2 02/17] driver core: Add dma_unconfigure callback in bus_type Lu Baolu
2021-11-28 8:02 ` Greg Kroah-Hartman
2021-11-29 4:03 ` Lu Baolu
2021-11-28 2:50 ` [PATCH v2 03/17] PCI: Add driver dma ownership management Lu Baolu
2021-11-28 2:50 ` [PATCH v2 04/17] driver core: platform: " Lu Baolu
2021-11-28 8:10 ` Greg Kroah-Hartman
2021-11-28 23:15 ` Jason Gunthorpe
2021-11-29 10:34 ` Greg Kroah-Hartman
2021-11-29 12:59 ` Jason Gunthorpe
2021-11-28 2:50 ` [PATCH v2 05/17] amba: " Lu Baolu
2021-11-28 2:50 ` [PATCH v2 06/17] bus: fsl-mc: " Lu Baolu
2021-11-28 2:50 ` Lu Baolu [this message]
2021-11-28 2:50 ` [PATCH v2 08/17] PCI: portdrv: Suppress kernel DMA ownership auto-claiming Lu Baolu
2021-11-28 2:50 ` [PATCH v2 09/17] iommu: Add security context management for assigned devices Lu Baolu
2021-11-28 2:50 ` [PATCH v2 10/17] iommu: Expose group variants of dma ownership interfaces Lu Baolu
2021-11-28 2:50 ` [PATCH v2 11/17] iommu: Add iommu_at[de]tach_device_shared() for multi-device groups Lu Baolu
2021-11-28 2:50 ` [PATCH v2 12/17] vfio: Set DMA USER ownership for VFIO devices Lu Baolu
2021-11-28 2:50 ` [PATCH v2 13/17] vfio: Remove use of vfio_group_viable() Lu Baolu
2021-11-28 2:50 ` [PATCH v2 14/17] vfio: Delete the unbound_list Lu Baolu
2021-11-28 2:50 ` [PATCH v2 15/17] vfio: Remove iommu group notifier Lu Baolu
2021-11-28 2:50 ` [PATCH v2 16/17] iommu: Remove iommu group changes notifier Lu Baolu
2021-11-28 2:50 ` [PATCH v2 17/17] drm/tegra: Use the iommu dma_owner mechanism Lu Baolu
2021-11-28 8:10 ` [PATCH v2 00/17] Fix BUG_ON in vfio_iommu_group_notifier() Greg Kroah-Hartman
2021-11-29 3:59 ` Lu Baolu
2021-12-06 2:07 ` Lu Baolu
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