Re: [RFC PATCH 0/3] Sharing MSIX irq for tx/rx queue pairs

On 01/05/2015 09:39 AM, Rusty Russell wrote:

Jason Wang [off-list ref] writes:

quoted

Hi all:

This series try to share MSIX irq for each tx/rx queue pair. This is
done through:

- introducing virtio pci channel which are group of virtqueues that
  sharing a single MSIX irq (Patch 1)
- expose channel setting to virtio core api (Patch 2)
- try to use channel setting in virtio-net (Patch 3)

Hi Jason,

        Is "channel" a term you created yourself, or something I was
just unaware of?  

By myself and probably not accurate.

irq_group would seem more obvious, if the former.

Yes, will use this in next version. Thanks.

quoted

For the transport that does not support channel, channel paramters
were simply ignored. For devices that does not use channel, it can
simply pass NULL or zero to virito core.

With the patch, 1 MSIX irq were saved for each TX/RX queue pair.

It seems fairly straightforward.

Acked-by: Rusty Russell <redacted>

Thanks,
Rusty.
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