Re: HFI1 code duplication todo

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On Thu, Nov 12, 2015 at 04:13:18PM -0500, Dennis Dalessandro wrote:
The major todo for the hfi1 driver in staging is getting rid of the verbs code duplication between ipath, qib, and now hfi1. The ipath driver has been deprecated and is going to be deleted soon. So that leaves qib and hfi. To address this we have proposed rdmavt which will be a common kmod that provides software RDMA verbs support. qib and hfi1 will both use this as well as other forthcoming drivers such as soft-roce. See this thread for some details: http://www.spinics.net/lists/linux-rdma/msg29922.html.

Since that initial RFC we have been accumulating patches in a GitHub repo for an early look at the development. At some point soon we want to actually start posting the patches to the mailing list. This is where it gets tricky. The code basically not only adds a new driver but it modifies two existing ones, heavily. To make it more murky one driver is in staging the other is in the usual drivers/infiniband tree.

The question is, how do we go about this logistically due to the 2 drivers being in separate sub-trees?

Greg, Doug,
As the maintainers of the two trees involved we'd kind of like to get your thoughts on this.

Hi Greg and Doug,

Just wanted to ping you guys again in case my mail last week slipped through the cracks. We are at the point now where we have some patches we can start posting. Looking for some logistical guidance.

Thanks

-Denny
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