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 00/13] Nested Virtualization: Overview

To: Christoph Egger <Christoph.Egger@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] RE: [PATCH 00/13] Nested Virtualization: Overview
From: "Dong, Eddie" <eddie.dong@xxxxxxxxx>
Date: Fri, 3 Sep 2010 16:12:08 +0800
Accept-language: en-US
Acceptlanguage: en-US
Cc: "Dong, Eddie" <eddie.dong@xxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Delivery-date: Fri, 03 Sep 2010 01:19:17 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <201009011653.27082.Christoph.Egger@xxxxxxx>
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>
References: <201009011653.27082.Christoph.Egger@xxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: ActJ7NFIF+3WvA6FR/+sw3RScdxWuwBUjfTQ
Thread-topic: [PATCH 00/13] Nested Virtualization: Overview
The fundamental argument of whether we should convert vendor specific code into 
vendor neutral code is not solved yet.I guess I don;t need to review rest of 
the code due to this :)
I strongly suggest we remove those unnecessary wrapper for readibilty, 
flexibility and performance.

BTW, VMX has a policy to access VMCS field only when it is a must.

Thanks, Eddie



Christoph Egger wrote:
> Hi!
> 
> This patch series brings Nested Virtualization to Xen.
> This is the third patch series. Improvements to the
> previous patch submission:
> 
> - Incorporated feedback discussion with Keir, Tim and Eddie.
> 
> There might still be some nuances to fiddle with to make it
> fit for VMX. Feedback from Intel is appreciated, therefore.
> 
> The patch series:
> 
> patch 01: add nestedhvm guest config option to the tools.
>                   This is the only one patch touching the tools
> patch 02: Add data structures for nested virtualization.
> patch 03: add nestedhvm function hooks.
> patch 04: The heart of nested virtualization.
> patch 05: Allow switch to paged real mode during vmrun emulation.
>                   Emulate cr0 and cr4 when guest does not intercept
>                   them (i.e. Hyper-V/Windows7, KVM)
> patch 06: When injecting an exception into nested guest, inject
>                   #VMEXIT into the guest if intercepted.
> patch 07: Allow guest to enable SVM in EFER.
> patch 08: Handle interrupts (generic part).
> patch 09: SVM specific implementation for nested virtualization.
> patch 10: Handle interrupts (SVM specific).
> patch 11: The piece of code that effectively turns on nested
> virtualization. patch 12: Move dirty_vram from struct hvm_domain to
>                   struct p2m_domain. This change is the first part
>                   from a larger not-yet-ready change where the vram
>                   and log_dirty tracking is teached to work on per
> p2m. 
> patch 13: Handle nested pagefault to enable hap-on-hap and handle
>                   nested guest page-table-walks to emulate
>                   instructions the guest does not intercept (i.e.
> WBINVD with Windows 7). 


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