On Mon, May 02, 2022 at 08:34:38PM +0200, Alexander Graf wrote: > Michael, since we already changed the CID in the spec, can we add a > property to the device that indicates the first 4 bytes of the UUID will > always be different between parent and child? > > That should give us the ability to mmap the vmgenid directly to user > space and act based on a simple u32 compare for clone notification, no? That is not a good idea. We want an _additional_ 4 bytes, so that we can keep the first 16 bytes (128 bits) as a kernel space secret. Jason
