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2022-09-30Ports/qemu: Use the coarse monotonic clock for timing CPU ticksTim Schumacher
While this loses quite a bit of accuracy (although to no apparent decrease in emulation quality) , it helps avoiding the additional overhead of the `clock_gettime` syscall (as `CLOCK_MONOTONIC_COARSE` is forwarded using the mapped time page) and we don't have to do a HPET timer read for each tick. This results in a decrease of Serenity boot time from 1h16m down to 42m when running on Serenity.
2022-07-08Ports: Add a QEMU portTim Schumacher