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 [thread overview] Message-ID: <20211206015903.88687-9-baolu.lu@linux.intel.com> (raw) In-Reply-To: <20211206015903.88687-1-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
WARNING: multiple messages have this Message-ID (diff)
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: kvm@vger.kernel.org, rafael@kernel.org, David Airlie <airlied@linux.ie>, linux-pci@vger.kernel.org, Thierry Reding <thierry.reding@gmail.com>, Diana Craciun <diana.craciun@oss.nxp.com>, Dmitry Osipenko <digetx@gmail.com>, Will Deacon <will@kernel.org>, Stuart Yoder <stuyoder@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Chaitanya Kulkarni <kch@nvidia.com>, Dan Williams <dan.j.williams@intel.com>, Cornelia Huck <cohuck@redhat.com>, linux-kernel@vger.kernel.org, Li Yang <leoyang.li@nxp.com>, iommu@lists.linux-foundation.org, Jacob jun Pan <jacob.jun.pan@intel.com>, Daniel Vetter <daniel@ffwll.ch>, Robin Murphy <robin.murphy@arm.com> Subject: [PATCH v3 08/18] PCI: pci_stub: Suppress kernel DMA ownership auto-claiming Date: Mon, 6 Dec 2021 09:58:53 +0800 [thread overview] Message-ID: <20211206015903.88687-9-baolu.lu@linux.intel.com> (raw) In-Reply-To: <20211206015903.88687-1-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 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-12-06 2:00 UTC|newest] Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-06 1:58 [PATCH v3 00/18] Fix BUG_ON in vfio_iommu_group_notifier() Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 01/18] iommu: Add device dma ownership set/release interfaces Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 13:35 ` Joerg Roedel 2021-12-06 13:35 ` Joerg Roedel 2021-12-06 14:29 ` Christoph Hellwig 2021-12-06 14:29 ` Christoph Hellwig 2021-12-06 15:01 ` Jason Gunthorpe 2021-12-06 15:01 ` Jason Gunthorpe via iommu 2021-12-07 1:52 ` Lu Baolu 2021-12-07 1:52 ` Lu Baolu 2021-12-06 14:42 ` Christoph Hellwig 2021-12-06 14:42 ` Christoph Hellwig 2021-12-07 2:07 ` Lu Baolu 2021-12-07 2:07 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 02/18] driver core: Add dma_cleanup callback in bus_type Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 03/18] driver core: platform: Rename platform_dma_configure() Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 7:53 ` Greg Kroah-Hartman 2021-12-06 7:53 ` Greg Kroah-Hartman 2021-12-06 14:13 ` Christoph Hellwig 2021-12-06 14:13 ` Christoph Hellwig 2021-12-06 14:43 ` Greg Kroah-Hartman 2021-12-06 14:43 ` Greg Kroah-Hartman 2021-12-06 14:45 ` Jason Gunthorpe 2021-12-06 14:45 ` Jason Gunthorpe via iommu 2021-12-06 14:47 ` Christoph Hellwig 2021-12-06 14:47 ` Christoph Hellwig 2021-12-06 15:04 ` Jason Gunthorpe via iommu 2021-12-06 15:04 ` Jason Gunthorpe 2021-12-07 1:21 ` Lu Baolu 2021-12-07 1:21 ` Lu Baolu 2021-12-07 23:09 ` Dan Williams 2021-12-07 23:09 ` Dan Williams 2021-12-06 1:58 ` [PATCH v3 04/18] driver core: platform: Add driver dma ownership management Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 7:54 ` Greg Kroah-Hartman 2021-12-06 7:54 ` Greg Kroah-Hartman 2021-12-06 14:36 ` Christoph Hellwig 2021-12-06 14:36 ` Christoph Hellwig 2021-12-06 15:06 ` Jason Gunthorpe via iommu 2021-12-06 15:06 ` Jason Gunthorpe 2021-12-07 2:57 ` Lu Baolu 2021-12-07 2:57 ` Lu Baolu 2021-12-07 13:16 ` Jason Gunthorpe 2021-12-07 13:16 ` Jason Gunthorpe via iommu 2021-12-07 13:25 ` Christoph Hellwig 2021-12-07 13:25 ` Christoph Hellwig 2021-12-07 13:30 ` Jason Gunthorpe 2021-12-07 13:30 ` Jason Gunthorpe via iommu 2021-12-09 1:20 ` Lu Baolu 2021-12-09 1:20 ` Lu Baolu 2021-12-10 1:23 ` Lu Baolu 2021-12-10 1:23 ` Lu Baolu 2021-12-13 0:50 ` Lu Baolu 2021-12-13 0:50 ` Lu Baolu 2021-12-13 13:24 ` Jason Gunthorpe 2021-12-13 13:24 ` Jason Gunthorpe via iommu 2021-12-15 12:24 ` Lu Baolu 2021-12-15 12:24 ` Lu Baolu 2021-12-14 16:35 ` Christoph Hellwig 2021-12-14 16:35 ` Christoph Hellwig 2021-12-06 1:58 ` [PATCH v3 05/18] amba: " Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 06/18] bus: fsl-mc: " Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 07/18] PCI: " Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` Lu Baolu [this message] 2021-12-06 1:58 ` [PATCH v3 08/18] PCI: pci_stub: Suppress kernel DMA ownership auto-claiming Lu Baolu 2021-12-06 1:58 ` [PATCH v3 09/18] PCI: portdrv: " Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 10/18] iommu: Add security context management for assigned devices Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 11/18] iommu: Expose group variants of dma ownership interfaces Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 12/18] iommu: Add iommu_at[de]tach_device_shared() for multi-device groups Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 14:43 ` Christoph Hellwig 2021-12-06 14:43 ` Christoph Hellwig 2021-12-07 2:33 ` Lu Baolu 2021-12-07 2:33 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 13/18] vfio: Set DMA USER ownership for VFIO devices Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:58 ` [PATCH v3 14/18] vfio: Remove use of vfio_group_viable() Lu Baolu 2021-12-06 1:58 ` Lu Baolu 2021-12-06 1:59 ` [PATCH v3 15/18] vfio: Delete the unbound_list Lu Baolu 2021-12-06 1:59 ` Lu Baolu 2021-12-06 1:59 ` [PATCH v3 16/18] vfio: Remove iommu group notifier Lu Baolu 2021-12-06 1:59 ` Lu Baolu 2021-12-06 1:59 ` [PATCH v3 17/18] iommu: Remove iommu group changes notifier Lu Baolu 2021-12-06 1:59 ` Lu Baolu 2021-12-06 1:59 ` [PATCH v3 18/18] drm/tegra: Use the iommu dma_owner mechanism Lu Baolu 2021-12-06 1:59 ` Lu Baolu 2021-12-06 12:40 ` Jason Gunthorpe 2021-12-06 12:40 ` Jason Gunthorpe via iommu 2021-12-07 2:34 ` Lu Baolu 2021-12-07 2:34 ` Lu Baolu 2021-12-17 6:41 ` [PATCH v3 00/18] Fix BUG_ON in vfio_iommu_group_notifier() Lu Baolu 2021-12-17 6:41 ` Lu Baolu
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