Andreas Kling ab5c422a29 Kernel/SMP: Make SMP message queueing work correctly ... - Use the receiver's per-CPU entry in the message, instead of the sender's. (Using the sender's entry wasn't safe for broadcast messages since the same entry ended up on multiple message queues.) - Retry the CAS until it *succeeds* instead of *fails*. This closes a race window, and also ensures a correct return value. The return value is used by the caller to decide whether to broadcast an IPI. This was the main reason smp=on was so slow. We had CPUs busy-waiting until someone else triggered an IPI and moved things along. - Add a CPU pause hint to the spin loop. :^)		2021-08-09 11:46:31 +02:00
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PC	Kernel: Move Kernel/Memory/ code into Kernel::Memory namespace	2021-08-06 14:05:58 +02:00
x86	Kernel/SMP: Make SMP message queueing work correctly	2021-08-09 11:46:31 +02:00