[VIRT-343 # ARMv8.5-RNG, Random Number Generator ]

Posted v4, v5, v6. I think this is now ready for merge.

[VIRT-327 # Richard's upstream QEMU work ]

Posted v3 of the CPUNegativeOffset patch set. Posted v2, v3, and a pull request for the tlb_fill patch set.

Debugged one more fix for Sparc testthreads. Reposted some long dormant linux-user fixes.

Started reviving the do_syscall split patch set, since Laurent asked after it.

r~