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

Re: [Xen-devel] [PATCH] ignore guest writes to read only memory regions

To: "Li, Xin" <xin.li@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] ignore guest writes to read only memory regions or memory holes in EPT
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 26 Oct 2009 13:28:06 +0000
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Mon, 26 Oct 2009 06:29:56 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <E88DD564E9DC5446A76B2B47C3BCCA15021EBFD794@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
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
Thread-index: AcpWFkIhm8487DyiTZ6DehIijsknnwABTI8rAAHGXnAAB2Y11Q==
Thread-topic: [Xen-devel] [PATCH] ignore guest writes to read only memory regions or memory holes in EPT
User-agent: Microsoft-Entourage/12.20.0.090605
On 26/10/2009 09:57, "Li, Xin" <xin.li@xxxxxxxxx> wrote:

>> Also, shouldn't writes to memory holes be already caught by the
>> handle_mmio() case, as we identify memory holes as having type
>> p2m_mmio_dm?
> 
> Much better, I don't notice memory holes are having type p2m_mmio_dm.

Please give c/s 20368 a look. It shares most of the logic with the AMD case.

I think it would be a good idea to backport this for 3.4.2, if everyone is
happy with it.

 -- Keir



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