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Re: system hung up when offlining CPUs

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  Re: system hung up when offlining CPUs Christoph Hellwig <hch@lst.de> - 2017-08-21 14:10 +0200

#1716383 — Re: system hung up when offlining CPUs

Hi Marc,

in general the driver should know not to use the queue / irq,
as blk-mq will never schedule I/O to queues that have no online
cpus.

The real bugs seems to be that we're using affinity for a device
that only has one real queue (as the config queue should not
have affinity).  Let me dig into what's going on here with virtio.

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