From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH v5] xen/arm: Allow balooning working with 1:1 memory mapping Date: Tue, 17 Dec 2013 14:11:41 +0000 Message-ID: <52B05B9D.3030409@linaro.org> References: <1387213237-1216-1-git-send-email-julien.grall@linaro.org> <52B02022020000780010E04E@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1VsvNG-0000YF-Q5 for xen-devel@lists.xenproject.org; Tue, 17 Dec 2013 14:11:50 +0000 Received: by mail-ee0-f52.google.com with SMTP id d17so2914663eek.11 for ; Tue, 17 Dec 2013 06:11:49 -0800 (PST) In-Reply-To: <52B02022020000780010E04E@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: Keir Fraser , ian.campbell@citrix.com, patches@linaro.org, tim@xen.org, stefano.stabellini@citrix.com, xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org On 12/17/2013 08:57 AM, Jan Beulich wrote: >>>> On 16.12.13 at 18:00, Julien Grall wrote: >> With the lack of iommu, dom0 must have a 1:1 memory mapping for all >> these guest physical address. When the ballon decides to give back a >> page to the kernel, this page must have the same address as previously. >> Otherwise, we will loose the 1:1 mapping and will break DMA-capable >> devices. >> >> Signed-off-by: Julien Grall >> Cc: Keir Fraser > > Reviewed-by: Jan Beulich > if you do one more change (and a little bit of further cleanup - > sorry I didn't notice this before): Thanks, I will do all the changes. -- Julien Grall