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Re: [Xen-devel] [PATCH 1/3] Nested VMX: update nested paging mode when vmswitch is in progress


  • To: Jan Beulich <JBeulich@xxxxxxxx>, Christoph Egger <chegger@xxxxxxxxx>, "Dong, Eddie" <eddie.dong@xxxxxxxxx>
  • From: "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>
  • Date: Tue, 14 Jan 2014 07:38:27 +0000
  • Accept-language: en-US
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 14 Jan 2014 07:38:41 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>
  • Thread-index: AQHO+9kU0FlGvzaCh0WxrQUf7BQwfJpZu8qw//+ZSoCAAw7kcIAG236QgCBqm9D//8zygIAAhlgA
  • Thread-topic: [PATCH 1/3] Nested VMX: update nested paging mode when vmswitch is in progress

Jan Beulich wrote on 2014-01-14:
>>>> On 14.01.14 at 03:33, "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx> wrote:
>> Zhang, Yang Z wrote on 2013-12-24:
>> 
>> Any comments ?
> 
> Considering Christoph's comments and reservations, if you can't alone
> deal with this I think you should work with the AMD people to
> eliminate or address his concerns.
> 

Yes. But the problem puzzled me is that Christoph said nested SVM works well 
w/o my patch which I cannot understand. Because according my analysis in 
previous thread, it also buggy in AMD side. But if they really solved the issue 
in their side, I wonder how they fix it. Perhaps I can use the same solution in 
VMX side without touch the common code.

Christoph, can you help to check it? thanks.

> Jan


Best regards,
Yang



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