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charset="utf-8" From: Nicolin Chen The updated IOMMUFD uAPI introduces the ability for userspace to request a specific hardware info data type via IOMMU_GET_HW_INFO. Update iommufd_backend_get_device_info() to set IOMMU_HW_INFO_FLAG_INPUT_TYPE when a non-zero type is supplied, and adjust all callers to pass a type value explicitly initialised to zero (IOMMU_HW_INFO_TYPE_DEFAULT) when no specific type is requested. Signed-off-by: Nicolin Chen Signed-off-by: Shameer Kolothum --- backends/iommufd.c | 7 +++++++ hw/arm/smmuv3-accel.c | 2 +- hw/vfio/iommufd.c | 4 ++-- 3 files changed, 10 insertions(+), 3 deletions(-) diff --git a/backends/iommufd.c b/backends/iommufd.c index acfab907c0..5daefe505e 100644 --- a/backends/iommufd.c +++ b/backends/iommufd.c @@ -387,16 +387,23 @@ bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend = *be, return true; } =20 +/* + * @type can carry a desired HW info type defined in the uapi headers. If = caller + * doesn't have one, indicating it wants the default type, then @type shou= ld be + * zeroed (i.e. IOMMU_HW_INFO_TYPE_DEFAULT). + */ bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid, uint32_t *type, void *data, uint32_t = len, uint64_t *caps, uint8_t *max_pasid_lo= g2, Error **errp) { struct iommu_hw_info info =3D { + .flags =3D (*type) ? IOMMU_HW_INFO_FLAG_INPUT_TYPE : 0, .size =3D sizeof(info), .dev_id =3D devid, .data_len =3D len, .data_uptr =3D (uintptr_t)data, + .in_data_type =3D *type, }; =20 if (ioctl(be->fd, IOMMU_GET_HW_INFO, &info)) { diff --git a/hw/arm/smmuv3-accel.c b/hw/arm/smmuv3-accel.c index beffb8aa94..14ea4eac37 100644 --- a/hw/arm/smmuv3-accel.c +++ b/hw/arm/smmuv3-accel.c @@ -127,7 +127,7 @@ smmuv3_accel_hw_compatible(SMMUv3State *s, HostIOMMUDev= iceIOMMUFD *idev, Error **errp) { struct iommu_hw_info_arm_smmuv3 info; - uint32_t data_type; + uint32_t data_type =3D 0; uint64_t caps; =20 if (!iommufd_backend_get_device_info(idev->iommufd, idev->devid, &data= _type, diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c index 131612eb83..d0f124300d 100644 --- a/hw/vfio/iommufd.c +++ b/hw/vfio/iommufd.c @@ -349,7 +349,7 @@ static bool iommufd_cdev_autodomains_get(VFIODevice *vb= asedev, ERRP_GUARD(); IOMMUFDBackend *iommufd =3D vbasedev->iommufd; VFIOContainer *bcontainer =3D VFIO_IOMMU(container); - uint32_t type, flags =3D 0; + uint32_t type =3D 0, flags =3D 0; uint64_t hw_caps; VendorCaps caps; VFIOIOASHwpt *hwpt; @@ -938,7 +938,7 @@ static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *= hiod, void *opaque, HostIOMMUDeviceIOMMUFD *idev; HostIOMMUDeviceCaps *caps =3D &hiod->caps; VendorCaps *vendor_caps =3D &caps->vendor_caps; - enum iommu_hw_info_type type; + enum iommu_hw_info_type type =3D 0; uint8_t max_pasid_log2; uint64_t hw_caps; =20 --=20 2.43.0