From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@eu.citrix.com>
Subject: Re: Kernel bug from 3.0 (was phy disks and vifs timing
	out in DomU)
Date: Thu, 1 Sep 2011 20:19:37 +0100
Message-ID: <1314904777.19389.25.camel@dagon.hellion.org.uk>
References: <4E4E3957.1040007@overnetdata.com>
	<20110819125615.GA26558@dumpdata.com>
	<4E56B132.9050708@overnetdata.com>
	<20110826142606.GA25511@dumpdata.com>
	<20110826144438.GA24836@dumpdata.com>
	<4E5E6843.7050206@citrix.com> <20110831170711.GB13642@dumpdata.com>
	<1314862972.28989.74.camel@zakaz.uk.xensource.com>
	<20110901142356.GD23971@dumpdata.com>
	<1314889953.28989.130.camel@zakaz.uk.xensource.com>
	<20110901153823.GC7506@dumpdata.com>
	<1314891894.28989.135.camel@zakaz.uk.xensource.com>
	<4E5FC20A.2080009@goop.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <4E5FC20A.2080009@goop.org>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Anthony Wright <anthony@overnetdata.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, David Vrabel <david.vrabel@citrix.com>, Todd, Deshane <todd.deshane@xen.org>
List-Id: xen-devel@lists.xenproject.org

On Thu, 2011-09-01 at 18:34 +0100, Jeremy Fitzhardinge wrote:
> On 09/01/2011 08:44 AM, Ian Campbell wrote:
> >
> > blkback, xenbus_client and the grant table stuff all use it as well and
> > AFAICT have the same requirement for syncing.
> >
> > $ git grep alloc_vm_area 
> > arch/x86/include/asm/xen/grant_table.h:#define xen_alloc_vm_area(size)  alloc_vm_area(size)
> >
> > -- this macro is unused...
> >
> > arch/x86/xen/grant-table.c:                     xen_alloc_vm_area(PAGE_SIZE * max_nr_gframes);
> > drivers/block/xen-blkback/xenbus.c:     blkif->blk_ring_area = alloc_vm_area(PAGE_SIZE);
> > drivers/net/xen-netback/netback.c:      vif->tx_comms_area = alloc_vm_area(PAGE_SIZE);
> > drivers/net/xen-netback/netback.c:      vif->rx_comms_area = alloc_vm_area(PAGE_SIZE);
> > drivers/xen/xenbus/xenbus_client.c:     area = xen_alloc_vm_area(PAGE_SIZE);
> 
> Well, 3/5ths unused.

Hmm, yes, no sure how I missed that.