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VFIO To: Andrew Jones , linux-riscv@lists.infradead.org, iommu@lists.linux.dev Cc: linux-kernel@vger.kernel.org, tomasz.jeznach@linux.dev, tjeznach@rivosinc.com, jgg@ziepe.ca, jgg@nvidia.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, pjw@kernel.org, palmer@dabbelt.com, anup@brainfault.org, tglx@kernel.org, kevin.tian@intel.com, fangyu.yu@linux.alibaba.com References: <20260925151659.419512-1-andrew.jones@oss.qualcomm.com> <20260925151659.419512-16-andrew.jones@oss.qualcomm.com> Content-Language: en-US From: "Nutty.Liu" In-Reply-To: <20260925151659.419512-16-andrew.jones@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: TPYP295CA0026.TWNP295.PROD.OUTLOOK.COM (2603:1096:7d0:a::20) To SE3PR04MB8922.apcprd04.prod.outlook.com (2603:1096:101:2e9::7) X-Microsoft-Original-Message-ID: <97bd625c-c259-43de-9e64-5693c591a7e6@hotmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: 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X-MS-Exchange-CrossTenant-AuthSource: SE3PR04MB8922.apcprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2026 03:17:27.8412 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: JH0PR04MB7088 On 9/25/2026 11:16 PM, Andrew Jones wrote: > 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 > Tested-by: Fangyu Yu Reviewed-by: Nutty Liu Thanks, Nutty > --- > 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