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@xxxxxxxxxxxxxxx>
---
drivers/pci/pci-stub.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index e408099fea52..6324c68602b4 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -36,6 +36,9 @@ static struct pci_driver stub_driver = {
.name = "pci-stub",
.id_table = NULL, /* only dynamic id's */
.probe = pci_stub_probe,
+ .driver = {
+ .suppress_auto_claim_dma_owner = true,
+ },
};
static int __init pci_stub_init(void)
--
2.25.1
