Re: [PATCH 01/11] RDMA/cxgb4: Remove MW support

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On Fri, Oct 09, 2020 at 10:10:06PM +0530, Potnuri Bharat Teja wrote:
> On Monday, October 10/05/20, 2020 at 21:47:26 +0530, Jason Gunthorpe wrote:
> > On Mon, Oct 05, 2020 at 08:56:52AM +0300, Leon Romanovsky wrote:
> > 
> > > > -	mhp->rhp = rhp;
> > > > -	mhp->attr.pdid = php->pdid;
> > > > -	mhp->attr.type = FW_RI_STAG_MW;
> > > 
> > > 75% of "enum fw_ri_stag_type" can be removed too.
> > 
> > I think that is the code-gen'd HW API for this driver, I don't mind
> > leaving it. It seems the HW supports MW, just nobody plumbed it
> > through to rdma-core
> > 
> Hi Jason,
> Agreed its dead code as is but Chelsio HW suports MW and we are yet to decide on
> requirements, we may probably add userspace support for MW in future.

You can't add userspace support without modifying the kernel since the
ucmd_mask was never, set. So when/if you get everything working send a
kernel series bringing these functions back.

Jason



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