From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR Date: Wed, 22 Apr 2015 14:46:37 -0600 Message-ID: <20150422204637.GA29491@obsidianresearch.com> References: <20150421224601.GY5622@wotan.suse.de> <20150421225732.GA17356@obsidianresearch.com> <20150421233907.GA5622@wotan.suse.de> <20150422053939.GA29609@obsidianresearch.com> <20150422152328.GB5622@wotan.suse.de> <20150422161755.GA19500@obsidianresearch.com> <1429728791.121496.10.camel@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1429728791.121496.10.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford Cc: "Luis R. Rodriguez" , Andy Lutomirski , mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, infinipath-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, awalls-Xoej9cPu4Z+RGvkDC/A1pg@public.gmane.org, Toshi Kani , "H. Peter Anvin" , Ingo Molnar , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Hal Rosenstock , Sean Hefty , Suresh Siddha , Rickard Strandqvist , Roland Dreier , Juergen Gross , Mauro Carvalho Chehab , Borislav Petkov , Mel Gorman , Vlastimil Babka , Davidlohr Bueso , Dave Hansen , Jean-Christophe Plagniol-Villard , Thomas List-Id: linux-rdma@vger.kernel.org On Wed, Apr 22, 2015 at 02:53:11PM -0400, Doug Ledford wrote: > To be precise, the split is that ipath powers the old HTX bus cards that > only work in AMD systems, qib is all PCI-e cards. I still have a few > HTX cards, but I no longer have any systems with HTX slots, so we > haven't even used this driver in testing for 3 or 4 years now. And > these are all old SDR cards, where the performance numbers were 800MB/s > with WC enabled, 50MB/s without it. Wow, I doubt any HTX systems are still in any kind of use. It would be a nice clean up to drop the PPC support out of this driver too. PPC never had HTX. 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