From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: "Luis R. Rodriguez" <mcgrof@suse.com>
Cc: 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: Tue, 21 Apr 2015 23:39:39 -0600 [thread overview]
Message-ID: <20150422053939.GA29609@obsidianresearch.com> (raw)
In-Reply-To: <20150421233907.GA5622@wotan.suse.de>
On Wed, Apr 22, 2015 at 01:39:07AM +0200, Luis R. Rodriguez wrote:
> > Mike, do you think the time is right to just remove the iPath driver?
>
> With PAT now being default the driver effectively won't work
> with write-combining on modern kernels. Even if systems are old
> they likely had PAT support, when upgrading kernels PAT will work
> but write-combing won't on ipath.
Sorry, do you mean the driver already doesn't get WC? Or do you mean
after some more pending patches are applied?
Jason
next prev parent reply other threads:[~2015-04-22 5:40 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-15 20:42 ioremap_uc() followed by set_memory_wc() - burrying MTRR Andy Lutomirski
2015-04-15 20:56 ` H. Peter Anvin
2015-04-15 22:15 ` Luis R. Rodriguez
2015-04-15 22:50 ` Andy Walls
2015-04-15 23:52 ` Andy Lutomirski
2015-04-16 0:33 ` Andy Walls
2015-04-21 22:46 ` Luis R. Rodriguez
2015-04-21 22:57 ` Jason Gunthorpe
2015-04-21 23:39 ` Luis R. Rodriguez
2015-04-22 5:39 ` Jason Gunthorpe [this message]
2015-04-22 15:23 ` Luis R. Rodriguez
2015-04-22 15:54 ` Luis R. Rodriguez
2015-04-22 15:59 ` Luis R. Rodriguez
2015-04-22 16:17 ` Jason Gunthorpe
2015-04-22 16:51 ` Luis R. Rodriguez
2015-04-22 18:53 ` Doug Ledford
2015-04-22 19:05 ` Luis R. Rodriguez
2015-04-22 19:10 ` Doug Ledford
2015-04-22 19:14 ` Luis R. Rodriguez
2015-04-22 20:46 ` Jason Gunthorpe
2015-04-22 20:58 ` Doug Ledford
2015-04-22 16:53 ` Andy Lutomirski
2015-04-22 17:07 ` Luis R. Rodriguez
[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 ` Luis R. Rodriguez
2015-04-15 22:38 ` Andy Walls
2015-04-15 23:42 ` Andy Lutomirski
2015-04-15 23:59 ` Andy Walls
2015-04-16 0:58 ` Andy Lutomirski
2015-04-16 1:01 ` Andy Walls
2015-04-16 19:19 ` Andy Lutomirski
2015-04-21 17:35 ` Luis R. Rodriguez
2015-04-15 23:58 ` Luis R. Rodriguez
2015-04-16 1:07 ` Andy Walls
2015-04-21 22:02 ` Luis R. Rodriguez
2015-04-21 22:08 ` Luis R. Rodriguez
2015-04-21 22:09 ` Andy Lutomirski
[not found] ` <5536d47a.95968c0a.1d12.ffffbf85@mx.google.com>
2015-04-21 23:14 ` Luis R. Rodriguez
2015-04-16 4:18 ` Hyong-Youb Kim
2015-04-16 18:54 ` Luis R. Rodriguez
2015-04-17 8:00 ` Hyong-Youb Kim
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