From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrea Arcangeli <andrea@qumranet.com>
Subject: [ofa-general] Re: [patch 5/6] mmu_notifier: Support for drivers with
	revers maps (f.e. for XPmem)
Date: Thu, 28 Feb 2008 01:42:26 +0100
Message-ID: <20080228004226.GE8091@v2.random>
References: <20080215064859.384203497@sgi.com>
	<20080215064933.376635032@sgi.com>
	<200802201055.21343.nickpiggin@yahoo.com.au>
	<Pine.LNX.4.64.0802271440530.13186@schroedinger.engr.sgi.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, steiner@sgi.com,
	Peter Zijlstra <a.p.zijlstra@chello.nl>, linux-mm@kvack.org,
	Izik Eidus <izike@qumranet.com>, Kanoj Sarcar <kanojsarcar@yahoo.com>,
	Roland Dreier <rdreier@cisco.com>, linux-kernel@vger.kernel.org,
	Avi Kivity <avi@qumranet.com>, kvm-devel@lists.sourceforge.net,
	daniel.blueman@quadrics.com, Robin Holt <holt@sgi.com>,
	general@lists.openfabrics.org, akpm@linux-foundation.org
To: Christoph Lameter <clameter@sgi.com>
Return-path: <general-bounces@lists.openfabrics.org>
Content-Disposition: inline
In-Reply-To: <Pine.LNX.4.64.0802271440530.13186@schroedinger.engr.sgi.com>
List-Unsubscribe: <http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general>,
	<mailto:general-request@lists.openfabrics.org?subject=unsubscribe>
List-Archive: <http://lists.openfabrics.org/pipermail/general>
List-Post: <mailto:general@lists.openfabrics.org>
List-Help: <mailto:general-request@lists.openfabrics.org?subject=help>
List-Subscribe: <http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general>,
	<mailto:general-request@lists.openfabrics.org?subject=subscribe>
Sender: general-bounces@lists.openfabrics.org
Errors-To: general-bounces@lists.openfabrics.org
List-Id: kvm.vger.kernel.org

On Wed, Feb 27, 2008 at 02:43:41PM -0800, Christoph Lameter wrote:
> Nope. unmap_mapping_range is already handled by the range callbacks.

But they're called with atomic=1 on anything but anonymous memory. I
understood Andrew asked to remove the atomic param and to allow
sleeping for all kind of vmas. I also understood certain XPMEM
customers asked to use XPMEM on something more than anonymous memory.

> The situation that you are imagining has already been dealt with [..]

I guess there's some misunderstanding, I think Nick was referring to
the above problem.