From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH] IB/ipoib: move back the IB LL address into the hard header Date: Tue, 11 Oct 2016 12:27:09 -0600 Message-ID: <20161011182709.GA20253@obsidianresearch.com> References: <1dbd83dfe7f435eecc5bc460e901b47758280f30.1476206016.git.pabeni@redhat.com> <20161011173216.GA16892@obsidianresearch.com> <22f61258-9bcf-0adc-f23f-79a4f1d50c6a@redhat.com> <20161011180119.GB17319@obsidianresearch.com> <1476209407.448.9.camel@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Doug Ledford , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sean Hefty , Hal Rosenstock , netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Paolo Abeni Return-path: Content-Disposition: inline In-Reply-To: <1476209407.448.9.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org On Tue, Oct 11, 2016 at 08:10:07PM +0200, Paolo Abeni wrote: > The first s/g fragment (the head buffer) is not allocated with the page > allocator, so perhaps there is some not too difficult/costly way out of > this. Keep in mind, there is nothing magic about the 16 SGL limit, other than we know all hardware supports it. That can be bumped up and most hardware will support a higher value. We'd just have to figure out if any hardware breaks, Mellanox and Intel should be able to respond to that question. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html