From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Doug Ledford <dledford@redhat.com>
Cc: "Luis R. Rodriguez" <mcgrof@suse.com>,
Andy Lutomirski <luto@amacapital.net>,
mike.marciniszyn@intel.com, infinipath@intel.com,
linux-rdma@vger.kernel.org, awalls@md.metrocast.net,
Toshi Kani <toshi.kani@hp.com>, "H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hal Rosenstock <hal.rosenstock@gmail.com>,
Sean Hefty <sean.hefty@intel.com>,
Suresh Siddha <sbsiddha@gmail.com>,
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>,
Roland Dreier <roland@purestorage.com>,
Juergen Gross <jgross@suse.com>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Borislav Petkov <bp@suse.de>, Mel Gorman <mgorman@suse.de>,
Vlastimil Babka <vbabka@suse.cz>,
Davidlohr Bueso <dbueso@suse.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ville Syrj?l? <syrjala@sci.fi>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
linux-media@vger.kernel.org, X86 ML <x86@kernel.org>,
mcgrof@do-not-panic.com
Subject: Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR
Date: Wed, 22 Apr 2015 20:46:37 +0000 [thread overview]
Message-ID: <20150422204637.GA29491@obsidianresearch.com> (raw)
In-Reply-To: <1429728791.121496.10.camel@redhat.com>
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
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "Luis R. Rodriguez" <mcgrof-IBi9RG/b67k@public.gmane.org>,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>,
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 <toshi.kani-VXdhtT5mjnY@public.gmane.org>,
"H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Suresh Siddha <sbsiddha-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rickard Strandqvist
<rickard_strandqvist-IW2WV5XWFqGZkjO+N0TKoMugMpMbD5Xr@public.gmane.org>,
Roland Dreier <roland-BHEL68pLQRGGvPXPguhicg@public.gmane.org>,
Juergen Gross <jgross-IBi9RG/b67k@public.gmane.org>,
Mauro Carvalho Chehab
<mchehab-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>,
Borislav Petkov <bp-l3A5Bk7waGM@public.gmane.org>,
Mel Gorman <mgorman-l3A5Bk7waGM@public.gmane.org>,
Vlastimil Babka <vbabka-AlSwsSmVLrQ@public.gmane.org>,
Davidlohr Bueso <dbueso-l3A5Bk7waGM@public.gmane.org>,
Dave Hansen <dave.hansen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
Jean-Christophe Plagniol-Villard
<plagnioj-sclMFOaUSTBWk0Htik3J/w@public.gmane.org>,
Thomas
Subject: Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR
Date: Wed, 22 Apr 2015 14:46:37 -0600 [thread overview]
Message-ID: <20150422204637.GA29491@obsidianresearch.com> (raw)
In-Reply-To: <1429728791.121496.10.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.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
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WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Doug Ledford <dledford@redhat.com>
Cc: "Luis R. Rodriguez" <mcgrof@suse.com>,
Andy Lutomirski <luto@amacapital.net>,
mike.marciniszyn@intel.com, infinipath@intel.com,
linux-rdma@vger.kernel.org, awalls@md.metrocast.net,
Toshi Kani <toshi.kani@hp.com>, "H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hal Rosenstock <hal.rosenstock@gmail.com>,
Sean Hefty <sean.hefty@intel.com>,
Suresh Siddha <sbsiddha@gmail.com>,
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>,
Roland Dreier <roland@purestorage.com>,
Juergen Gross <jgross@suse.com>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Borislav Petkov <bp@suse.de>, Mel Gorman <mgorman@suse.de>,
Vlastimil Babka <vbabka@suse.cz>,
Davidlohr Bueso <dbueso@suse.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ville Syrj?l? <syrjala@sci.fi>,
Linux Fbdev development list <linux-fbdev@vger.kernel.org>,
linux-media@vger.kernel.org, X86 ML <x86@kernel.org>,
mcgrof@do-not-panic.com
Subject: Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR
Date: Wed, 22 Apr 2015 14:46:37 -0600 [thread overview]
Message-ID: <20150422204637.GA29491@obsidianresearch.com> (raw)
In-Reply-To: <1429728791.121496.10.camel@redhat.com>
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
next prev parent reply other threads:[~2015-04-22 20:46 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20150410171750.GA5622@wotan.suse.de>
[not found] ` <CALCETrUG=RiG8S9Gpiqm_0CxvxurxLTNKyuyPoFNX46EAauA+g@mail.gmail.com>
[not found] ` <CAB=NE6XgNgu7i2OiDxFVJLWiEjbjBY17-dV7L3yi2+yzgMhEbw@mail.gmail.com>
[not found] ` <1428695379.6646.69.camel@misato.fc.hp.com>
[not found] ` <20150410210538.GB5622@wotan.suse.de>
[not found] ` <1428699490.21794.5.camel@misato.fc.hp.com>
[not found] ` <CALCETrUP688aNjckygqO=AXXrNYvLQX6F0=b5fjmsCqqZU78+Q@mail.gmail.com>
[not found] ` <20150411012938.GC5622@wotan.suse.de>
[not found] ` <CALCETrXd19C6pARde3pv-4pt-i52APtw5xs20itwROPq9VmCfg@mail.gmail.com>
2015-04-13 17:49 ` ioremap_uc() followed by set_memory_wc() - burrying MTRR Luis R. Rodriguez
2015-04-13 17:49 ` Luis R. Rodriguez
2015-04-15 20:42 ` Andy Lutomirski
2015-04-15 20:42 ` Andy Lutomirski
2015-04-15 20:42 ` Andy Lutomirski
2015-04-15 20:56 ` H. Peter Anvin
2015-04-15 20:56 ` H. Peter Anvin
2015-04-15 20:56 ` H. Peter Anvin
2015-04-15 22:15 ` Luis R. Rodriguez
2015-04-15 22:15 ` Luis R. Rodriguez
2015-04-15 22:15 ` Luis R. Rodriguez
2015-04-15 22:50 ` Andy Walls
2015-04-15 22:50 ` Andy Walls
2015-04-15 22:50 ` Andy Walls
2015-04-15 23:52 ` Andy Lutomirski
2015-04-15 23:52 ` Andy Lutomirski
2015-04-15 23:52 ` Andy Lutomirski
2015-04-16 0:33 ` Andy Walls
2015-04-16 0:33 ` Andy Walls
2015-04-16 0:33 ` Andy Walls
2015-04-21 22:46 ` Luis R. Rodriguez
2015-04-21 22:46 ` Luis R. Rodriguez
2015-04-21 22:46 ` Luis R. Rodriguez
2015-04-21 22:57 ` Jason Gunthorpe
2015-04-21 22:57 ` Jason Gunthorpe
2015-04-21 22:57 ` Jason Gunthorpe
2015-04-21 23:39 ` Luis R. Rodriguez
2015-04-21 23:39 ` Luis R. Rodriguez
2015-04-21 23:39 ` Luis R. Rodriguez
2015-04-22 5:39 ` Jason Gunthorpe
2015-04-22 5:39 ` Jason Gunthorpe
2015-04-22 5:39 ` Jason Gunthorpe
2015-04-22 15:23 ` Luis R. Rodriguez
2015-04-22 15:23 ` Luis R. Rodriguez
2015-04-22 15:23 ` Luis R. Rodriguez
2015-04-22 15:54 ` Luis R. Rodriguez
2015-04-22 15:54 ` Luis R. Rodriguez
2015-04-22 15:54 ` Luis R. Rodriguez
2015-04-22 15:59 ` Luis R. Rodriguez
2015-04-22 15:59 ` Luis R. Rodriguez
2015-04-22 15:59 ` Luis R. Rodriguez
2015-04-22 16:17 ` Jason Gunthorpe
2015-04-22 16:17 ` Jason Gunthorpe
2015-04-22 16:17 ` Jason Gunthorpe
2015-04-22 16:51 ` Luis R. Rodriguez
2015-04-22 16:51 ` Luis R. Rodriguez
2015-04-22 16:51 ` Luis R. Rodriguez
2015-04-22 18:53 ` Doug Ledford
2015-04-22 18:53 ` Doug Ledford
2015-04-22 18:53 ` Doug Ledford
2015-04-22 19:05 ` Luis R. Rodriguez
2015-04-22 19:05 ` Luis R. Rodriguez
2015-04-22 19:05 ` Luis R. Rodriguez
2015-04-22 19:10 ` Doug Ledford
2015-04-22 19:10 ` Doug Ledford
2015-04-22 19:10 ` Doug Ledford
2015-04-22 19:14 ` Luis R. Rodriguez
2015-04-22 19:14 ` Luis R. Rodriguez
2015-04-22 19:14 ` Luis R. Rodriguez
2015-04-22 20:46 ` Jason Gunthorpe [this message]
2015-04-22 20:46 ` Jason Gunthorpe
2015-04-22 20:46 ` Jason Gunthorpe
2015-04-22 20:58 ` Doug Ledford
2015-04-22 20:58 ` Doug Ledford
2015-04-22 20:58 ` Doug Ledford
2015-04-22 16:53 ` Andy Lutomirski
2015-04-22 16:53 ` Andy Lutomirski
2015-04-22 16:53 ` Andy Lutomirski
2015-04-22 17:07 ` Luis R. Rodriguez
2015-04-22 17:07 ` Luis R. Rodriguez
2015-04-22 17:07 ` Luis R. Rodriguez
2015-04-15 22:38 ` Andy Walls
2015-04-15 22:38 ` Andy Walls
2015-04-15 23:42 ` Andy Lutomirski
2015-04-15 23:42 ` Andy Lutomirski
2015-04-15 23:59 ` Andy Walls
2015-04-15 23:59 ` Andy Walls
2015-04-16 0:58 ` Andy Lutomirski
2015-04-16 0:58 ` Andy Lutomirski
2015-04-16 1:01 ` Andy Walls
2015-04-16 1:01 ` Andy Walls
2015-04-16 19:19 ` Andy Lutomirski
2015-04-16 19:19 ` Andy Lutomirski
2015-04-21 17:35 ` Luis R. Rodriguez
2015-04-21 17:35 ` Luis R. Rodriguez
2015-04-15 23:58 ` Luis R. Rodriguez
2015-04-15 23:58 ` Luis R. Rodriguez
2015-04-16 1:07 ` Andy Walls
2015-04-16 1:07 ` Andy Walls
2015-04-16 1:07 ` Andy Walls
2015-04-21 22:02 ` Luis R. Rodriguez
2015-04-21 22:02 ` Luis R. Rodriguez
2015-04-21 22:02 ` Luis R. Rodriguez
2015-04-21 22:08 ` Luis R. Rodriguez
2015-04-21 22:08 ` Luis R. Rodriguez
2015-04-21 22:08 ` Luis R. Rodriguez
2015-04-21 22:09 ` Andy Lutomirski
2015-04-21 22:09 ` Andy Lutomirski
2015-04-21 22:09 ` Andy Lutomirski
[not found] ` <5536d47a.95968c0a.1d12.ffffbf85@mx.google.com>
2015-04-21 23:14 ` Luis R. Rodriguez
2015-04-21 23:14 ` Luis R. Rodriguez
2015-04-21 23:14 ` Luis R. Rodriguez
2015-04-16 4:18 ` Hyong-Youb Kim
2015-04-16 4:18 ` Hyong-Youb Kim
2015-04-16 4:18 ` Hyong-Youb Kim
2015-04-16 18:54 ` Luis R. Rodriguez
2015-04-16 18:54 ` Luis R. Rodriguez
2015-04-16 18:54 ` Luis R. Rodriguez
2015-04-17 8:00 ` Hyong-Youb Kim
2015-04-17 8:00 ` Hyong-Youb Kim
2015-04-17 8:00 ` Hyong-Youb Kim
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