[PATCH v4 20/21] riscv: defconfig: Enable IOMMUFD and VFIO

From: Andrew Jones

Date: Thu Aug 20 2026 - 17:50:56 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>
---
arch/riscv/configs/defconfig | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index ed605b5e3162..bae9a0f32f89 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -249,6 +249,10 @@ 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