On 2023/11/27 14:50, Duan, Zhenzhong wrote:
-----Original Message----- From: Liu, Yi L yi.l.liu@intel.com Sent: Monday, November 27, 2023 2:39 PM Subject: [PATCH 2/3] vfio: Add VFIO_DEVICE_PASID_[AT|DE]TACH_IOMMUFD_PT
This adds ioctls for the userspace to attach a given pasid of a vfio device to/from an IOAS/HWPT.
Signed-off-by: Yi Liu yi.l.liu@intel.com
drivers/vfio/device_cdev.c | 45 +++++++++++++++++++++++++++++++ drivers/vfio/vfio.h | 4 +++ drivers/vfio/vfio_main.c | 8 ++++++ include/uapi/linux/vfio.h | 55 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 112 insertions(+)
diff --git a/drivers/vfio/device_cdev.c b/drivers/vfio/device_cdev.c index e75da0a70d1f..c2ac7ed44537 100644 --- a/drivers/vfio/device_cdev.c +++ b/drivers/vfio/device_cdev.c @@ -210,6 +210,51 @@ int vfio_df_ioctl_detach_pt(struct vfio_device_file *df, return 0; }
+int vfio_df_ioctl_pasid_attach_pt(struct vfio_device_file *df,
struct vfio_device_pasid_attach_iommufd_pt__user *arg) +{
- struct vfio_device *device = df->device;
- struct vfio_device_pasid_attach_iommufd_pt attach;
- unsigned long minsz;
- int ret;
- minsz = offsetofend(struct vfio_device_pasid_attach_iommufd_pt, pt_id);
- if (copy_from_user(&attach, arg, minsz))
return -EFAULT;- if (attach.argsz < minsz || attach.flags)
return -EINVAL;- mutex_lock(&device->dev_set->lock);
- ret = device->ops->pasid_attach_ioas(device, attach.pasid,
&attach.pt_id);
- mutex_unlock(&device->dev_set->lock);
- return ret;
+}
+int vfio_df_ioctl_pasid_detach_pt(struct vfio_device_file *df,
struct vfio_device_pasid_detach_iommufd_pt__user *arg) +{
- struct vfio_device *device = df->device;
- struct vfio_device_pasid_detach_iommufd_pt detach;
- unsigned long minsz;
- minsz = offsetofend(struct vfio_device_pasid_detach_iommufd_pt, flags);
Pasid isn't copied, should use pasid here?
good catch! will fix it.