> -----Original Message----- > From: linux-rdma-owner@xxxxxxxxxxxxxxx <linux-rdma- > owner@xxxxxxxxxxxxxxx> On Behalf Of Raju Rangoju > Sent: Thursday, February 14, 2019 11:28 AM > To: Jason Gunthorpe <jgg@xxxxxxxxxxxx> > Cc: davem@xxxxxxxxxxxxx; linux-rdma@xxxxxxxxxxxxxxx; > netdev@xxxxxxxxxxxxxxx; swise@xxxxxxxxxxxxxxxxxxxxx > Subject: Re: [rdma-rc PATCH 2/2] iw_cxgb4: cq/qp mask depends on bar2 > pages in a host page > > On Thursday, February 02/14/19, 2019 at 15:41:34 +0000, Jason Gunthorpe > wrote: > > On Thu, Feb 14, 2019 at 05:40:54PM +0530, Raju Rangoju wrote: > > > Adjust the cq/qp mask based on no.of bar2 pages in a host page. > > > > > > For user-mode rdma, the granularity of the BAR2 memory mapped > > > to a user rdma process during queue allocation must be based > > > on the host page size. The lld attributes udb_density and > > > ucq_density are used to figure out how many sge contexts are > > > in a bar2 page. So the rdev->qpmask and rdev->cqmask in > > > iw_cxgb4 need to now be adjusted based on how many sge bar2 > > > pages are in a host page. > > > > Why is this rc? Do certain arches fail to work or something? > > > > Yes, this series fixes a regression that was introduced by commit > 2391b0030e (v5.0-rc1~129^2~272) > > > Jason Rdma over cxgb4 on arches with a non-4K page size are busted w/o this fix. That was the motivation for -rc.
