Mark Johnston a97f683fe3 vmm: Add a device file interface for creating and destroying VMs ... This supersedes the sysctl interface, which has the limitations of being root-only and not supporting automatic resource destruction, i.e., we cannot easily destroy VMs automatically when bhyve terminates. For now, two ioctls are implemented VMMCTL_VM_CREATE and VMMCTL_VM_DESTROY. Eventually I would like to support tying a VM's lifetime to that of the descriptor, so that it is automatically destroyed when the descriptor is closed. However, this will require some work in bhyve: when the guest wants to reboot, bhyve exits with a status that indicates that it is to be restarted. This is incompatible with the idea of tying a VM's lifetime to that of a descriptor, since we want to avoid creating and destroying a VM across each reboot (as this involves freeing all of the guest memory, among other things). One possible design would be to decompose bhyve into two processes, a parent which handles reboots, and a child which runs in capability mode and handles guest execution. In any case, this gets us closer to addressing the shortcomings mentioned above. Reviewed by: jhb Differential Revision: https://reviews.freebsd.org/D47028		2024-11-05 01:40:41 +00:00
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vmm_dev.c	vmm: Add a device file interface for creating and destroying VMs	2024-11-05 01:40:41 +00:00
vmm_dev.h	vmm: Add a device file interface for creating and destroying VMs	2024-11-05 01:40:41 +00:00
vmm_ktr.h
vmm_stat.c
vmm_stat.h