The launch script generator today (and the scripts that it generates) is
fundamentally built on the concept of PCI device classes, with the
restriction that at most one PCI function per class can be passed through
to a post-launched VM. This has put inproper constraint on the scenarios
users can set up, especially on server platforms or those with SR-IOV
capable devices.
As it is too tedious to change such deep-rooted concept, this patch
rewrites the launch script generator and refines the structure of the
generated scripts so that PCI functions are identified only by their
BDF.
This change serves as a mandatory step to align the way how passthrough
devices are configured for pre-launched and post-launched VMs, which
eventually allows us to present a unified view in the configurator for
assigning passthrough device.
v2 -> v3:
* Rename sos_id to service_vm_id and user_vmid to user_vm_id.
* Refine a couple of info messages in the launch script template.
v1 -> v2:
* Fix wording issues identified during review.
* Exit when the out_dir is an existing regular file.
Tracked-On: #6690
Signed-off-by: Junjie Mao <junjie.mao@intel.com>
