[$] BPF meets io_uring
Over the last couple of years, a lot of development effort has gone into
two kernel subsystems:
BPF and
io_uring. The BPF virtual machine allows
programs from user space to be safely run within the context of the kernel,
while io_uring addresses the longstanding problem of running system calls
asynchronously. As the two subsystems expand, it was inevitable that the
two would eventually meet; the first encounter happened in mid-February
with this patch
set from Pavel Begunkov adding the ability to run BPF programs from
within io_uring.