[PATCH v6 15/16] riscv: defconfig: Enable IOMMUFD and VFIO

From: Andrew Jones

Date: Fri Sep 25 2026 - 11:36:16 EST


Enable iommufd and VFIO in the default configuration now that the
RISC-V IOMMU provides the DMA and MSI remapping needed for userspace
device access, including assignment to virtual machines.

Signed-off-by: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>
Tested-by: Fangyu Yu <fangyu.yu@xxxxxxxxxxxxxxxxx>
---
arch/riscv/configs/defconfig | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 04ae305d5511..daf382c05441 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -251,6 +251,10 @@ CONFIG_DMADEVICES=y
CONFIG_DMA_SUN6I=m
CONFIG_DW_AXI_DMAC=y
CONFIG_MMP_PDMA=m
+CONFIG_IOMMUFD=m
+CONFIG_VFIO_DEVICE_CDEV=y
+CONFIG_VFIO=m
+CONFIG_VFIO_PCI=m
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_INPUT=y
--
2.43.0