From: Leon Romanovsky Make sure that all VFIO PCI devices have peer-to-peer capabilities enables, so we would be able to export their MMIO memory through DMABUF, Signed-off-by: Leon Romanovsky --- drivers/vfio/pci/vfio_pci_core.c | 4 ++++ include/linux/vfio_pci_core.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index 31bdb9110cc0f..df9a32d3deac9 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -28,6 +28,7 @@ #include #include #include +#include #if IS_ENABLED(CONFIG_EEH) #include #endif @@ -2088,6 +2089,9 @@ int vfio_pci_core_init_dev(struct vfio_device *core_vdev) INIT_LIST_HEAD(&vdev->dummy_resources_list); INIT_LIST_HEAD(&vdev->ioeventfds_list); INIT_LIST_HEAD(&vdev->sriov_pfs_item); + vdev->provider = pci_p2pdma_enable(vdev->pdev); + if (IS_ERR(vdev->provider)) + return PTR_ERR(vdev->provider); init_rwsem(&vdev->memory_lock); xa_init(&vdev->ctx); diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h index fbb472dd99b36..b017fae251811 100644 --- a/include/linux/vfio_pci_core.h +++ b/include/linux/vfio_pci_core.h @@ -94,6 +94,7 @@ struct vfio_pci_core_device { struct vfio_pci_core_device *sriov_pf_core_dev; struct notifier_block nb; struct rw_semaphore memory_lock; + struct p2pdma_provider *provider; }; /* Will be exported for vfio pci drivers usage */ -- 2.50.1