| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
[Xen-devel] Re: Live migration fails due to c/s 20627
|
To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> |
|
Subject: |
[Xen-devel] Re: Live migration fails due to c/s 20627 |
|
From: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|
Date: |
Tue, 15 Dec 2009 19:25:38 +0000 |
|
Cc: |
Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "kurt.hackel@xxxxxxxxxx" <kurt.hackel@xxxxxxxxxx>, "Dugger, Donald D" <donald.d.dugger@xxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> |
|
Delivery-date: |
Tue, 15 Dec 2009 11:26:13 -0800 |
|
Envelope-to: |
www-data@xxxxxxxxxxxxxxxxxxx |
|
In-reply-to: |
<4B27D4A9.7070203@xxxxxxxx> |
|
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: |
Acp9tAg3uu7EC6umSGaNz+GDigHPaQACFl/5 |
|
Thread-topic: |
Live migration fails due to c/s 20627 |
|
User-agent: |
Microsoft-Entourage/12.23.0.091001 |
On 15/12/2009 18:25, "Jeremy Fitzhardinge" <jeremy@xxxxxxxx> wrote:
> On 12/15/2009 09:24 AM, Xu, Dongxiao wrote:
>> If CPU has rdtsc but no rdtscp, then the VM exec control bit in VMCS
>> won't be turned on. Therefore if rdtscp instruction runs, it will encounter
>> invalid op code directly but no VMEXIT.
>>
>
> Ah, right. You'd need to make that particular illegal instruction vmexit.
We'd need to VMEXIT on any guest #UD and then call into our x86 emulator.
There's just a slight feeling that could have wider impact and implications
than the specific case we'd want to handle here. Then again, #UD is rare and
usually unexpected, so perhaps such a seemingly broad change is not so
dangerous.
-- Keir
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
| <Prev in Thread] |
Current Thread |
[Next in Thread>
|
- RE: [Xen-devel] Re: Live migration fails due to c/s 20627, (continued)
- [Xen-devel] Re: Live migration fails due to c/s 20627, Jeremy Fitzhardinge
- [Xen-devel] RE: Live migration fails due to c/s 20627, Xu, Dongxiao
- [Xen-devel] Re: Live migration fails due to c/s 20627, Jeremy Fitzhardinge
- [Xen-devel] RE: Live migration fails due to c/s 20627, Dan Magenheimer
- [Xen-devel] Re: Live migration fails due to c/s 20627, Keir Fraser
- Re: [Xen-devel] Re: Live migration fails due to c/s 20627, Keir Fraser
- Re: [Xen-devel] RE: Live migration fails due to c/s 20627, Andre Przywara
- RE: [Xen-devel] RE: Live migration fails due to c/s 20627, Dan Magenheimer
- [Xen-devel] Re: Live migration fails due to c/s 20627,
Keir Fraser <=
- [Xen-devel] RE: Live migration fails due to c/s 20627, Xu, Dongxiao
|
|
|
| |
|
Home