[ENG] Felipe Franciosi (Nutanix): MUSER: Mediated Userspace Device / #LinuxPiter

MUSER: Mediated Userspace Device Meet muser, a framework for implementing PCI devices in userspace. It leverages VFIO and MDEV which are kernel subsystems typically used in virtualisation for device pass-through. It consists of a kernel module that acts as the mediated device and a userspace library where the core of the device is implemented. Applications using libmuser must only provide a device description and callbacks for read/write. Muser abstracts the complexity yet allows tremendous flexibility. It