Messages in this thread | | | Date | Mon, 2 May 2022 20:46:34 +0200 | From | "Jason A. Donenfeld" <> | Subject | Re: [PATCH 2/2] random: add fork_event sysctl for polling VM forks |
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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
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