Re: [PATCH 1/8] blk-mq: add blk_mq_max_nr_hw_queues()

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On Wed, Jul 12, 2023 at 09:16:11PM +0800, Ming Lei wrote:
> The problem is that blk_mq_alloc_tag_set() forces to set nr_hw_queues
> as 1 for kdump kernel, that is why blk_mq_max_nr_hw_queues() has to
> return 1 for kdump kernel.

Well, let's fix that first and work from there.  Same argument against
that deep magic applies there as well.

> Thomas, can we disable managed irq for kdump kernel and switch to
> non-managed irq? Then we can avoid driver's change. I'd suggest
> this way if it is possible.

Why the heck would we?




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