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SubjectRe: [PATCH 2/3] X86: Add a check to catch Xen emulation of Hyper-V
>>> On 17.04.13 at 15:01, "Michael S. Tsirkin" <mst@redhat.com> wrote:
> On Wed, Apr 17, 2013 at 02:52:42PM +0100, Jan Beulich wrote:
>> >>> On 17.04.13 at 15:20, KY Srinivasan <kys@microsoft.com> wrote:
>> > If I recall correctly, the issue here was that Xen was enabling Hyper-V
>> > emulation un-conditionally even for Linux guests.
>>
>> To make this a little more precise - Xen is doing so only when the
>> guest config tells it to.
>
> So it's something explicitly requested for this guest? Then I don't
> understand why does not make sense to override it in guest.

Iirc it was/is XenServer which enable Hyper-V emulation for all HVM
guests, which clearly is the wrong thing. I was personally also not
really in agreement with the override in the kernel, but it was
decided to do it that way at that point in time. As a consequence,
I don't object this to be reverted.

Jan



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