fork of 9front i guess
cf8ff0e713
We used to assume a 1:1 pairing of processors to submit queues. With recent machines, we now got more cpu cores than what some nvme drives support so we need to distribute the queues across these cpu's which requires locking on command submission. There is a feature get/set command to probe the number of submit and completion queues, but we decided to just handling submission queue create command error gracefully as it is simpler and has less chance of regression with existing setups. Thanks to mischief for investigating and writing the code. |
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