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xen-devel
[Xen-devel] Re: Live migration fails due to c/s 20627
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To: |
Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> |
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Subject: |
[Xen-devel] Re: Live migration fails due to c/s 20627 |
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From: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Date: |
Tue, 15 Dec 2009 19:31:28 +0000 |
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Cc: |
"kurt.hackel@xxxxxxxxxx" <kurt.hackel@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, "Dugger, Donald D" <donald.d.dugger@xxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> |
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Live migration fails due to c/s 20627 |
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On 15/12/2009 19:20, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:
>> Ah, right. You'd need to make that particular illegal
>> instruction vmexit.
>
> Or make ALL illegal instructions vmexit, decode, if rdtscp
> emulate it, else vmenter again.
>
> Is this not done anyplace else in the hvm code?
Oh, in fact I am wrong in my previous email, replying to Jeremy, claiming we
do not trap-and-emulate on illegal instructions. In fact we *do*, as it got
added to handle SYSCALL vs SYSENTER when migrating between Intel and AMD
hosts.
So all that would need to be done is to add RDTSCP support to x86_emulate.c,
as it's currently missing. But that's pretty trivial.
-- Keir
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- [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
- 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, 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
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