[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH v4 26/26] tools/libxc: Calculate xstate cpuid leaf from guest information



On Wed, Mar 23, 2016 at 04:36:29PM +0000, Andrew Cooper wrote:
> It is unsafe to generate the guests xstate leaves from host information, as it
> prevents the differences between hosts from being hidden.
> 
> In addition, some further improvements and corrections:
>  - don't discard the known flags in sub-leaves 2..63 ECX
>  - zap sub-leaves beyond 62
>  - zap all bits in leaf 1, EBX/ECX.  No XSS features are currently supported.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.