From: Robin Holt <holt@sgi.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Robin Holt <holt@sgi.com>,
Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
Andrew Morton <akpm@osdl.org>, Nick Piggin <npiggin@suse.de>,
kvm-devel@lists.sourceforge.net,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com,
Hugh Dickins <hugh@veritas.com>
Subject: Re: [kvm-devel] [PATCH] export notifier #1
Date: Wed, 23 Jan 2008 13:58:39 -0600 [thread overview]
Message-ID: <20080123195839.GK26420@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801231147370.13547@schroedinger.engr.sgi.com>
On Wed, Jan 23, 2008 at 11:48:43AM -0800, Christoph Lameter wrote:
> On Wed, 23 Jan 2008, Andrea Arcangeli wrote:
>
> > On Wed, Jan 23, 2008 at 04:52:47AM -0600, Robin Holt wrote:
> > > But 100 callouts holding spinlocks will not work for our implementation
> > > and even if the callouts are made with spinlocks released, we would very
> > > strongly prefer a single callout which messages the range to the other
> > > side.
> >
> > But you take the physical address and turn into mm+va with your rmap...
>
> The remote mm+va or a local mm+va?
To be more complete, the phys is pointing to a xpmem_segment+va and the
xpmem_segment points to the mm. The seg describes a window into the
source processes virtual address space. Seems somewhat analogous to the
Xen grant, but I do not know.
Thanks,
Robin
WARNING: multiple messages have this Message-ID (diff)
From: Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>
To: Christoph Lameter <clameter-sJ/iWh9BUns@public.gmane.org>
Cc: Andrew Morton <akpm-3NddpPZAyC0@public.gmane.org>,
Nick Piggin <npiggin-l3A5Bk7waGM@public.gmane.org>,
Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Benjamin Herrenschmidt
<benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>,
steiner-sJ/iWh9BUns@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org,
Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>,
Hugh Dickins <hugh-DTz5qymZ9yRBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [PATCH] export notifier #1
Date: Wed, 23 Jan 2008 13:58:39 -0600 [thread overview]
Message-ID: <20080123195839.GK26420@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801231147370.13547-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
On Wed, Jan 23, 2008 at 11:48:43AM -0800, Christoph Lameter wrote:
> On Wed, 23 Jan 2008, Andrea Arcangeli wrote:
>
> > On Wed, Jan 23, 2008 at 04:52:47AM -0600, Robin Holt wrote:
> > > But 100 callouts holding spinlocks will not work for our implementation
> > > and even if the callouts are made with spinlocks released, we would very
> > > strongly prefer a single callout which messages the range to the other
> > > side.
> >
> > But you take the physical address and turn into mm+va with your rmap...
>
> The remote mm+va or a local mm+va?
To be more complete, the phys is pointing to a xpmem_segment+va and the
xpmem_segment points to the mm. The seg describes a window into the
source processes virtual address space. Seems somewhat analogous to the
Xen grant, but I do not know.
Thanks,
Robin
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WARNING: multiple messages have this Message-ID (diff)
From: Robin Holt <holt@sgi.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Robin Holt <holt@sgi.com>,
Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
Andrew Morton <akpm@osdl.org>, Nick Piggin <npiggin@suse.de>,
kvm-devel@lists.sourceforge.net,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com,
Hugh Dickins <hugh@veritas.com>
Subject: Re: [kvm-devel] [PATCH] export notifier #1
Date: Wed, 23 Jan 2008 13:58:39 -0600 [thread overview]
Message-ID: <20080123195839.GK26420@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801231147370.13547@schroedinger.engr.sgi.com>
On Wed, Jan 23, 2008 at 11:48:43AM -0800, Christoph Lameter wrote:
> On Wed, 23 Jan 2008, Andrea Arcangeli wrote:
>
> > On Wed, Jan 23, 2008 at 04:52:47AM -0600, Robin Holt wrote:
> > > But 100 callouts holding spinlocks will not work for our implementation
> > > and even if the callouts are made with spinlocks released, we would very
> > > strongly prefer a single callout which messages the range to the other
> > > side.
> >
> > But you take the physical address and turn into mm+va with your rmap...
>
> The remote mm+va or a local mm+va?
To be more complete, the phys is pointing to a xpmem_segment+va and the
xpmem_segment points to the mm. The seg describes a window into the
source processes virtual address space. Seems somewhat analogous to the
Xen grant, but I do not know.
Thanks,
Robin
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next prev parent reply other threads:[~2008-01-23 19:58 UTC|newest]
Thread overview: 192+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-13 16:24 [PATCH] mmu notifiers #v2 Andrea Arcangeli
2008-01-13 16:24 ` Andrea Arcangeli
2008-01-13 16:24 ` Andrea Arcangeli
2008-01-13 21:11 ` Benjamin Herrenschmidt
2008-01-13 21:11 ` Benjamin Herrenschmidt
2008-01-13 21:11 ` Benjamin Herrenschmidt
2008-01-14 20:02 ` Christoph Lameter
2008-01-14 20:02 ` Christoph Lameter
2008-01-14 20:02 ` Christoph Lameter
2008-01-15 4:28 ` Benjamin Herrenschmidt
2008-01-15 4:28 ` Benjamin Herrenschmidt
2008-01-15 4:28 ` Benjamin Herrenschmidt
2008-01-15 12:44 ` Andrea Arcangeli
2008-01-15 12:44 ` Andrea Arcangeli
2008-01-15 12:44 ` Andrea Arcangeli
2008-01-15 20:18 ` Benjamin Herrenschmidt
2008-01-15 20:18 ` Benjamin Herrenschmidt
2008-01-15 20:18 ` Benjamin Herrenschmidt
2008-01-16 1:06 ` Andrea Arcangeli
2008-01-16 1:06 ` Andrea Arcangeli
2008-01-16 9:01 ` Brice Goglin
2008-01-16 9:01 ` Brice Goglin
2008-01-16 10:19 ` Andrea Arcangeli
2008-01-16 10:19 ` Andrea Arcangeli
2008-01-16 17:42 ` Rik van Riel
2008-01-16 17:42 ` Rik van Riel
2008-01-16 17:42 ` Rik van Riel
2008-01-16 17:48 ` Izik Eidus
2008-01-16 17:48 ` Izik Eidus
2008-01-16 17:48 ` Izik Eidus
2008-01-17 16:23 ` Andrea Arcangeli
2008-01-17 16:23 ` Andrea Arcangeli
2008-01-17 16:23 ` Andrea Arcangeli
2008-01-17 18:21 ` Izik Eidus
2008-01-17 18:21 ` Izik Eidus
2008-01-17 19:32 ` Andrea Arcangeli
2008-01-17 19:32 ` Andrea Arcangeli
2008-01-17 19:32 ` Andrea Arcangeli
2008-01-21 12:52 ` [PATCH] mmu notifiers #v3 Andrea Arcangeli
2008-01-21 12:52 ` Andrea Arcangeli
2008-01-21 12:52 ` Andrea Arcangeli
2008-01-22 2:21 ` Rik van Riel
2008-01-22 2:21 ` Rik van Riel
2008-01-22 2:21 ` Rik van Riel
2008-01-22 14:12 ` [kvm-devel] " Avi Kivity
2008-01-22 14:12 ` Avi Kivity
2008-01-22 14:12 ` Avi Kivity
2008-01-22 14:43 ` [kvm-devel] " Andrea Arcangeli
2008-01-22 14:43 ` Andrea Arcangeli
2008-01-22 14:43 ` Andrea Arcangeli
2008-01-22 20:08 ` [kvm-devel] [PATCH] mmu notifiers #v4 Andrea Arcangeli
2008-01-22 20:08 ` Andrea Arcangeli
2008-01-22 20:08 ` Andrea Arcangeli
2008-01-22 20:34 ` [kvm-devel] [PATCH] export notifier #1 Christoph Lameter
2008-01-22 20:34 ` Christoph Lameter
2008-01-22 20:34 ` Christoph Lameter
2008-01-22 22:31 ` [kvm-devel] " Andrea Arcangeli
2008-01-22 22:31 ` Andrea Arcangeli
2008-01-22 22:31 ` Andrea Arcangeli
2008-01-22 22:53 ` [kvm-devel] " Christoph Lameter
2008-01-22 22:53 ` Christoph Lameter
2008-01-22 22:53 ` Christoph Lameter
2008-01-23 10:27 ` [kvm-devel] " Avi Kivity
2008-01-23 10:27 ` Avi Kivity
2008-01-23 10:27 ` Avi Kivity
2008-01-23 10:52 ` [kvm-devel] " Robin Holt
2008-01-23 10:52 ` Robin Holt
2008-01-23 10:52 ` Robin Holt
2008-01-23 12:04 ` [kvm-devel] " Andrea Arcangeli
2008-01-23 12:04 ` Andrea Arcangeli
2008-01-23 12:34 ` Robin Holt
2008-01-23 12:34 ` Robin Holt
2008-01-23 12:34 ` Robin Holt
2008-01-23 19:48 ` [kvm-devel] " Christoph Lameter
2008-01-23 19:48 ` Christoph Lameter
2008-01-23 19:48 ` Christoph Lameter
2008-01-23 19:58 ` Robin Holt [this message]
2008-01-23 19:58 ` [kvm-devel] " Robin Holt
2008-01-23 19:58 ` Robin Holt
2008-01-23 19:47 ` [kvm-devel] " Christoph Lameter
2008-01-23 19:47 ` Christoph Lameter
2008-01-23 19:47 ` Christoph Lameter
2008-01-24 5:56 ` [kvm-devel] " Avi Kivity
2008-01-24 5:56 ` Avi Kivity
2008-01-24 5:56 ` Avi Kivity
2008-01-24 12:26 ` [kvm-devel] " Andrea Arcangeli
2008-01-24 12:26 ` Andrea Arcangeli
2008-01-24 12:26 ` Andrea Arcangeli
2008-01-24 12:34 ` [kvm-devel] " Avi Kivity
2008-01-24 12:34 ` Avi Kivity
2008-01-24 12:34 ` Avi Kivity
2008-01-23 11:41 ` [kvm-devel] " Andrea Arcangeli
2008-01-23 11:41 ` Andrea Arcangeli
2008-01-23 11:41 ` Andrea Arcangeli
2008-01-23 12:32 ` [kvm-devel] " Robin Holt
2008-01-23 12:32 ` Robin Holt
2008-01-23 12:32 ` Robin Holt
2008-01-23 17:33 ` [kvm-devel] " Andrea Arcangeli
2008-01-23 17:33 ` Andrea Arcangeli
2008-01-23 17:33 ` Andrea Arcangeli
2008-01-23 20:27 ` [kvm-devel] " Christoph Lameter
2008-01-23 20:27 ` Christoph Lameter
2008-01-23 20:27 ` Christoph Lameter
2008-01-24 15:42 ` [kvm-devel] " Andrea Arcangeli
2008-01-24 15:42 ` Andrea Arcangeli
2008-01-24 20:07 ` Christoph Lameter
2008-01-24 20:07 ` Christoph Lameter
2008-01-24 20:07 ` Christoph Lameter
2008-01-25 6:35 ` [kvm-devel] " Avi Kivity
2008-01-25 6:35 ` Avi Kivity
2008-01-25 6:35 ` Avi Kivity
2008-01-23 20:18 ` [kvm-devel] " Christoph Lameter
2008-01-23 20:18 ` Christoph Lameter
2008-01-23 20:18 ` Christoph Lameter
2008-01-24 14:34 ` [kvm-devel] " Andrea Arcangeli
2008-01-24 14:34 ` Andrea Arcangeli
2008-01-24 14:34 ` Andrea Arcangeli
2008-01-24 14:41 ` [kvm-devel] " Andrea Arcangeli
2008-01-24 14:41 ` Andrea Arcangeli
2008-01-24 14:41 ` Andrea Arcangeli
2008-01-24 15:15 ` [kvm-devel] " Avi Kivity
2008-01-24 15:15 ` Avi Kivity
2008-01-24 15:15 ` Avi Kivity
2008-01-24 15:18 ` [kvm-devel] " Avi Kivity
2008-01-24 15:18 ` Avi Kivity
2008-01-24 15:18 ` Avi Kivity
2008-01-24 20:01 ` [kvm-devel] " Christoph Lameter
2008-01-24 20:01 ` Christoph Lameter
2008-01-24 20:01 ` Christoph Lameter
2008-01-22 23:36 ` [kvm-devel] " Benjamin Herrenschmidt
2008-01-22 23:36 ` Benjamin Herrenschmidt
2008-01-22 23:36 ` Benjamin Herrenschmidt
2008-01-23 0:40 ` [kvm-devel] " Christoph Lameter
2008-01-23 0:40 ` Christoph Lameter
2008-01-23 0:40 ` Christoph Lameter
2008-01-23 1:21 ` [kvm-devel] " Robin Holt
2008-01-23 1:21 ` Robin Holt
2008-01-23 1:21 ` Robin Holt
2008-01-23 12:51 ` [kvm-devel] " Gerd Hoffmann
2008-01-23 12:51 ` Gerd Hoffmann
2008-01-23 12:51 ` Gerd Hoffmann
2008-01-23 13:19 ` [kvm-devel] " Robin Holt
2008-01-23 13:19 ` Robin Holt
2008-01-23 13:19 ` Robin Holt
2008-01-23 14:12 ` [kvm-devel] " Gerd Hoffmann
2008-01-23 14:12 ` Gerd Hoffmann
2008-01-23 14:12 ` Gerd Hoffmann
2008-01-23 14:18 ` [kvm-devel] " Robin Holt
2008-01-23 14:18 ` Robin Holt
2008-01-23 14:18 ` Robin Holt
2008-01-23 14:35 ` [kvm-devel] " Gerd Hoffmann
2008-01-23 14:35 ` Gerd Hoffmann
2008-01-23 14:35 ` Gerd Hoffmann
2008-01-23 15:48 ` [kvm-devel] " Robin Holt
2008-01-23 15:48 ` Robin Holt
2008-01-23 15:48 ` Robin Holt
2008-01-23 14:17 ` [kvm-devel] " Avi Kivity
2008-01-23 14:17 ` Avi Kivity
2008-01-23 14:17 ` Avi Kivity
2008-01-24 4:03 ` [kvm-devel] " Benjamin Herrenschmidt
2008-01-24 4:03 ` Benjamin Herrenschmidt
2008-01-24 4:03 ` Benjamin Herrenschmidt
2008-01-23 15:41 ` [kvm-devel] " Andrea Arcangeli
2008-01-23 15:41 ` Andrea Arcangeli
2008-01-23 17:47 ` Gerd Hoffmann
2008-01-23 17:47 ` Gerd Hoffmann
2008-01-23 17:47 ` Gerd Hoffmann
2008-01-24 6:01 ` [kvm-devel] " Avi Kivity
2008-01-24 6:01 ` Avi Kivity
2008-01-24 6:01 ` Avi Kivity
2008-01-24 6:45 ` [kvm-devel] " Jeremy Fitzhardinge
2008-01-24 6:45 ` Jeremy Fitzhardinge
2008-01-23 20:40 ` Christoph Lameter
2008-01-23 20:40 ` Christoph Lameter
2008-01-23 20:40 ` Christoph Lameter
2008-01-24 2:00 ` Enhance mmu notifiers to accomplish a lockless implementation (incomplete) Robin Holt
2008-01-24 2:00 ` Robin Holt
2008-01-24 2:00 ` Robin Holt
2008-01-24 4:05 ` Robin Holt
2008-01-24 4:05 ` Robin Holt
2008-01-24 4:05 ` Robin Holt
2008-01-22 19:28 ` [PATCH] mmu notifiers #v3 Peter Zijlstra
2008-01-22 19:28 ` Peter Zijlstra
2008-01-22 20:31 ` Christoph Lameter
2008-01-22 20:31 ` Christoph Lameter
2008-01-22 20:31 ` Christoph Lameter
2008-01-22 20:31 ` Andrea Arcangeli
2008-01-22 20:31 ` Andrea Arcangeli
2008-01-22 20:31 ` Andrea Arcangeli
2008-01-22 22:10 ` Hugh Dickins
2008-01-22 22:10 ` Hugh Dickins
2008-01-22 22:10 ` Hugh Dickins
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