tree dd1d2419001dc1f47ddedbe3661fd6921252a9b4
parent e70f971a6c1230138843d7ab82267e4a5aaf6bda
author Zhenzhong Duan <zhenzhong.duan@intel.com> 1700556256 +0800
committer Cédric Le Goater <clg@redhat.com> 1703009018 +0100

vfio/ccw: Make vfio cdev pre-openable by passing a file handle

This gives management tools like libvirt a chance to open the vfio
cdev with privilege and pass FD to qemu. This way qemu never needs
to have privilege to open a VFIO or iommu cdev node.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>