Re: [RFC PATCH 2/2] block: virtio-blk: support multi virt queues per virtio-blk device

Il 17/06/2014 17:50, Ming Lei ha scritto:

quoted

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It would be nice to allocate virtqueues dynamically instead of
hardcoding the limit.  virtio-scsi also allocates virtqueues
dynamically.

virtio-scsi may have lots of LUN, but virtio-blk only has one disk
which needn't lots of hardware queues.

If you want to do queue steering based on the guest VCPU number, the number of queues must be = to the number of VCPUs shouldn't it?

I tried using a divisor of the number of VCPUs, but couldn't get the block layer to deliver interrupts to the right VCPU.

Paolo