Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
vfio/ccw: Provide a get_region_info op
Move it out of vfio_ccw_mdev_ioctl() and re-indent it.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Link: https://lore.kernel.org/r/12-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
authored by
Jason Gunthorpe
and committed by
Alex Williamson
61b3f7b5
b9827eff
+26
-18
+26
-18
drivers/s390/cio/vfio_ccw_ops.c
+26
-18
drivers/s390/cio/vfio_ccw_ops.c
···
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private->region = NULL;
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}
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+
static int
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vfio_ccw_mdev_ioctl_get_region_info(struct vfio_device *vdev,
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struct vfio_region_info __user *arg)
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{
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struct vfio_ccw_private *private =
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container_of(vdev, struct vfio_ccw_private, vdev);
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struct vfio_region_info info;
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unsigned long minsz;
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int ret;
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minsz = offsetofend(struct vfio_region_info, offset);
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if (copy_from_user(&info, arg, minsz))
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return -EFAULT;
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if (info.argsz < minsz)
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return -EINVAL;
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ret = vfio_ccw_mdev_get_region_info(private, &info, arg);
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if (ret)
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return ret;
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return copy_to_user(arg, &info, minsz) ? -EFAULT : 0;
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}
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+
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static ssize_t vfio_ccw_mdev_ioctl(struct vfio_device *vdev,
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unsigned int cmd,
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unsigned long arg)
···
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return -EINVAL;
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ret = vfio_ccw_mdev_get_device_info(private, &info);
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if (ret)
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return ret;
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-
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return copy_to_user((void __user *)arg, &info, minsz) ? -EFAULT : 0;
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}
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case VFIO_DEVICE_GET_REGION_INFO:
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{
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struct vfio_region_info info;
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-
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minsz = offsetofend(struct vfio_region_info, offset);
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if (copy_from_user(&info, (void __user *)arg, minsz))
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return -EFAULT;
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if (info.argsz < minsz)
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return -EINVAL;
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-
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ret = vfio_ccw_mdev_get_region_info(private, &info, arg);
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if (ret)
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return ret;
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···
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.read = vfio_ccw_mdev_read,
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.write = vfio_ccw_mdev_write,
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.ioctl = vfio_ccw_mdev_ioctl,
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.get_region_info = vfio_ccw_mdev_ioctl_get_region_info,
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.request = vfio_ccw_mdev_request,
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.dma_unmap = vfio_ccw_dma_unmap,
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.bind_iommufd = vfio_iommufd_emulated_bind,