Xen devel - Oct 2010 - [Patch 0/4] Refining Xsave/Xrestore support - Version 2

Hi, Keir,

The following patches refines Xen support for CPU Xsave/Xrestore
support. There are four patches included.
Patch 1/4:
   Cleaning up existing Xsave code in Xen.
       Replace xfeature_low and xfeature_high with a u64 variable
xfeature_mask.
       In structure hvm_vcpu, rename xfeature_mask to xcr0
       Provide EDX:EAX with all bits set to 1 for XSAVE and XRSTOR as
spec recommends
Patch 2/4:
   Adding Xsave/Xrestore support for PV guests. Feature is exposed
via CPUID. XSETBV is trapped and emulated by Xen (via GP#).
Patch 3/4:
   Expose AVX to guest OSs.
Patch 4/4:
   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.

I tried to read the related the email thread and incorporated the
comments. These are version 2 of the patch series.

Shan Haitao

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I applied patch 1/4 as xen-unstable:22334. The rest I think Jan had further
comments on. When you submit for the next round, please remember the
signed-off-by lines.

 Thanks,
 Keir

On 29/10/2010 02:24, "Haitao Shan" <maillists.shan@gmail.com>
wrote:
> Hi, Keir,
> 
> The following patches refines Xen support for CPU Xsave/Xrestore
> support. There are four patches included.
> Patch 1/4:
>    Cleaning up existing Xsave code in Xen.
>        Replace xfeature_low and xfeature_high with a u64 variable
> xfeature_mask.
>        In structure hvm_vcpu, rename xfeature_mask to xcr0
>        Provide EDX:EAX with all bits set to 1 for XSAVE and XRSTOR as
> spec recommends
> Patch 2/4:
>    Adding Xsave/Xrestore support for PV guests. Feature is exposed
> via CPUID. XSETBV is trapped and emulated by Xen (via GP#).
> Patch 3/4:
>    Expose AVX to guest OSs.
> Patch 4/4:
>    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.
> 
> I tried to read the related the email thread and incorporated the
> comments. These are version 2 of the patch series.
> 
> Shan Haitao
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel


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