Re: [Xen-devel] Re: [Patch 0/3] Refining Xsave/Xrestore support - Version 3

[Haitao Shan <maillists.shan@xxxxxxxxx>]

OK. I did not realize this was a stable tree. Originally, I thought it
was a testing tree, which was used for periodic 4.0 update releases.
And by default, xsave is not enabled.
I would agree with you. It is more meaningful when this feature gets
more tests before doing a backport.
Thanks!

Shan Haitao

2010/11/4 Keir Fraser <keir@xxxxxxx>:
> On 04/11/2010 01:37, "Haitao Shan" <maillists.shan@xxxxxxxxx> wrote:
>
>> Hi, Keir,
>>
>> Can you pull the 4 xsave-related patches to Xen4.0 tree?
>
> Are they really suitable for immediate backport to a stable branch?
>
>  --Keir
>
>> I have tried. Applying the patches is quite straight forward. Patch 4
>> needs some minor modifications since there are some general function
>> changes recently in unstable tree (while these are not in Xen4.0). I
>> have made this for you.
>> All patches are Signed-off-by: Haitao Shan <haitao.shan@xxxxxxxxx> and
>> Han Weidong <weidong.han@xxxxxxxxx>
>>
>> Thanks!
>>
>> Shan Haitao
>>
>> 2010/11/2 Haitao Shan <maillists.shan@xxxxxxxxx>:
>>> Hi, Keir,
>>>
>>> The following patches refines Xen support for CPU Xsave/Xrestore
>>> support. There are three patches included.
>>> Patch 1/3:
>>>  Adding Xsave/Xrestore support for PV guests. Feature is exposed
>>> via CPUID. XSETBV is trapped and emulated by Xen (via GP#).
>>> Patch 2/3:
>>>  Expose AVX to guest OSs.
>>> Patch 3/3:
>>>  Adding guest save/restore support when Xsave/Xrestore are available.
>>>      Adding a pair of hypercalls for PV guest
>>>      Adding a new data chunk for HVM guest.
>>>
>>> These are version 3 of the patch series.
>>>
>>> Shan Haitao
>>>
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>> http://lists.xensource.com/xen-devel
>
>
>

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