From: Jerome Glisse <j.glisse@gmail.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Christoph Lameter <cl@linux.com>,
Austin S Hemmelgarn <ahferroin7@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
jglisse@redhat.com, mgorman@suse.de, aarcange@redhat.com,
riel@redhat.com, airlied@redhat.com,
aneesh.kumar@linux.vnet.ibm.com,
Cameron Buschardt <cabuschardt@nvidia.com>,
Mark Hairgrove <mhairgrove@nvidia.com>,
Geoffrey Gerfin <ggerfin@nvidia.com>,
John McKenna <jmckenna@nvidia.com>,
akpm@linux-foundation.org
Subject: Re: Interacting with coherent memory on external devices
Date: Fri, 24 Apr 2015 11:09:36 -0400 [thread overview]
Message-ID: <20150424150935.GB3840@gmail.com> (raw)
In-Reply-To: <20150424145738.GZ5561@linux.vnet.ibm.com>
On Fri, Apr 24, 2015 at 07:57:38AM -0700, Paul E. McKenney wrote:
> On Fri, Apr 24, 2015 at 09:12:07AM -0500, Christoph Lameter wrote:
> > On Thu, 23 Apr 2015, Paul E. McKenney wrote:
> >
> > >
> > > DAX
> > >
> > > DAX is a mechanism for providing direct-memory access to
> > > high-speed non-volatile (AKA "persistent") memory. Good
> > > introductions to DAX may be found in the following LWN
> > > articles:
> >
> > DAX is a mechanism to access memory not managed by the kernel and is the
> > successor to XIP. It just happens to be needed for persistent memory.
> > Fundamentally any driver can provide an MMAPPed interface to allow access
> > to a devices memory.
>
> I will take another look, but others in this thread have called out
> difficulties with DAX's filesystem nature.
Do not waste your time on that this is not what we want. Christoph here
is more than stuborn and fails to see the world.
Cheers,
Jerome
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next prev parent reply other threads:[~2015-04-24 15:09 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 21:44 Interacting with coherent memory on external devices Paul E. McKenney
2015-04-21 23:46 ` Jerome Glisse
2015-04-22 0:36 ` Benjamin Herrenschmidt
2015-04-22 12:42 ` Paul E. McKenney
2015-04-21 23:49 ` Christoph Lameter
2015-04-22 0:05 ` Jerome Glisse
2015-04-22 0:50 ` Christoph Lameter
2015-04-22 1:01 ` Benjamin Herrenschmidt
2015-04-22 13:35 ` Paul E. McKenney
2015-04-22 13:18 ` Paul E. McKenney
2015-04-22 16:16 ` Christoph Lameter
2015-04-22 17:07 ` Jerome Glisse
2015-04-22 18:17 ` Christoph Lameter
2015-04-22 18:52 ` Paul E. McKenney
2015-04-23 14:12 ` Christoph Lameter
2015-04-23 19:24 ` Paul E. McKenney
2015-04-24 14:01 ` Christoph Lameter
2015-04-24 14:13 ` Paul E. McKenney
2015-04-24 15:53 ` Rik van Riel
2015-04-23 2:36 ` Benjamin Herrenschmidt
2015-04-23 14:10 ` Christoph Lameter
2015-04-23 15:42 ` Jerome Glisse
2015-04-24 14:04 ` Christoph Lameter
2015-04-23 22:29 ` Benjamin Herrenschmidt
2015-04-23 2:30 ` Benjamin Herrenschmidt
2015-04-23 14:25 ` Christoph Lameter
2015-04-23 15:25 ` Austin S Hemmelgarn
2015-04-23 19:33 ` Paul E. McKenney
2015-04-24 14:12 ` Christoph Lameter
2015-04-24 14:57 ` Paul E. McKenney
2015-04-24 15:09 ` Jerome Glisse [this message]
2015-04-25 11:20 ` Paul E. McKenney
2015-04-24 15:52 ` Christoph Lameter
2015-04-23 22:37 ` Benjamin Herrenschmidt
2015-04-24 14:09 ` Christoph Lameter
2015-04-23 16:04 ` Rik van Riel
2015-04-22 0:42 ` Benjamin Herrenschmidt
2015-04-22 0:57 ` Paul E. McKenney
2015-04-22 1:04 ` Benjamin Herrenschmidt
2015-04-22 15:25 ` Christoph Lameter
2015-04-22 16:31 ` Jerome Glisse
2015-04-22 17:14 ` Christoph Lameter
2015-04-22 19:07 ` Jerome Glisse
2015-04-23 2:34 ` Benjamin Herrenschmidt
2015-04-23 14:38 ` Christoph Lameter
2015-04-23 16:11 ` Jerome Glisse
2015-04-24 14:29 ` Christoph Lameter
2015-04-24 15:08 ` Jerome Glisse
2015-04-24 16:03 ` Christoph Lameter
2015-04-24 16:43 ` Jerome Glisse
2015-04-24 16:58 ` Christoph Lameter
2015-04-24 17:19 ` Jerome Glisse
2015-04-24 18:56 ` Christoph Lameter
2015-04-24 19:29 ` Jerome Glisse
2015-04-24 20:00 ` Christoph Lameter
2015-04-24 20:32 ` Jerome Glisse
2015-04-25 11:46 ` Paul E. McKenney
2015-04-27 15:08 ` Christoph Lameter
2015-04-27 15:47 ` Jerome Glisse
2015-04-27 16:17 ` Christoph Lameter
2015-04-27 16:29 ` Rik van Riel
2015-04-27 16:48 ` Christoph Lameter
2015-04-27 23:54 ` Benjamin Herrenschmidt
2015-05-13 14:10 ` Vlastimil Babka
2015-05-13 23:38 ` Benjamin Herrenschmidt
2015-05-14 7:39 ` Vlastimil Babka
2015-05-14 7:51 ` Benjamin Herrenschmidt
2015-05-28 18:18 ` Paul E. McKenney
2015-04-27 16:43 ` Jerome Glisse
2015-04-27 16:51 ` Christoph Lameter
2015-04-27 17:21 ` Jerome Glisse
2015-04-27 19:26 ` Christoph Lameter
2015-04-27 19:35 ` Rik van Riel
2015-04-27 20:52 ` Jerome Glisse
2015-04-28 14:18 ` Christoph Lameter
2015-04-28 17:20 ` Jerome Glisse
2015-04-27 16:15 ` Paul E. McKenney
2015-04-27 16:31 ` Christoph Lameter
2015-04-24 23:45 ` Benjamin Herrenschmidt
2015-04-23 18:52 ` Paul E. McKenney
2015-04-24 14:30 ` Christoph Lameter
2015-04-24 14:54 ` Paul E. McKenney
2015-04-24 15:49 ` Christoph Lameter
2015-04-24 16:06 ` Rik van Riel
2015-04-25 11:49 ` Paul E. McKenney
2015-04-24 16:00 ` Jerome Glisse
2015-04-24 16:08 ` Rik van Riel
2015-04-23 17:28 ` Rik van Riel
2015-04-23 2:27 ` Benjamin Herrenschmidt
2015-04-23 14:20 ` Christoph Lameter
2015-04-23 16:22 ` Jerome Glisse
2015-04-24 18:41 ` Oded Gabbay
2015-04-23 19:00 ` Paul E. McKenney
2015-04-22 15:20 ` Christoph Lameter
2015-04-25 2:32 ` Rik van Riel
2015-04-25 3:32 ` Benjamin Herrenschmidt
2015-04-25 11:55 ` Paul E. McKenney
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