WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] Re: [PATCH 3/7] libxenlight resend: 8mb physmap slack for pv

To: "Stefano Stabellini" <stefano.stabellini@xxxxxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH 3/7] libxenlight resend: 8mb physmap slack for pv domains
From: andres@xxxxxxxxxxxxxxxx
Date: Thu, 3 Dec 2009 07:55:38 -0800
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Vincent Hanquez <vincent.hanquez@xxxxxxxxxxxxx>
Delivery-date: Thu, 03 Dec 2009 07:55:59 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: SquirrelMail/1.4.19
I can cut the patch that way, however ... a fixed 8mb slack for pv domains
has been in place at least since Dec 08 2006, changeset 12803. No one
seems to have needed an optionally larger or smaller slack ;)
Andres
> On Wed, 2 Dec 2009, Andres Lagar-Cavilla wrote:
>> Contemplate 8MB of slack for PV domains, since they
>> do ballooning (or flipping network rx) and need
>> some extra room in their pfn space.
>>
>> Note that this does not allocate any extra memory
>> to the domain, it simply extends the physmap with
>> some extra room for "bounce bufffering back" pfn's
>> that are yielded to dom0.
>>
>
> Vincent is probably traveling and for this reason he didn't reply to
> your last email about this patch.
>
> I don't think he would be happy until you move the 8mb slack into a
> configurable parameter in libxl_domain_build_info, defaulted to 8mb in
> init_build_info.
>
>



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] Re: [PATCH 3/7] libxenlight resend: 8mb physmap slack for pv domains, andres <=