RE: [Xen-ia64-devel][PATCH] optimization for windows

["Yang, Fred" <fred.yang@xxxxxxxxx>]

>-----Original Message-----
>From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-ia64-devel-
>bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jürgen Groß
>Xu, Anthony wrote:
>> This is optimization for windows 2003.
>>
>> Windows use region 4 and region 5 for identity mapping.
>>
>> I see ~3% improvement when running specjbb2005 on guest windows after
>> applying this patch.
>>
>
>Did I understand this correct?
>If Region 7 preferred page size is 8kB, Region 4 and 5 will be identity
>mapping, regardless of DomU type?

Please understand DomU and HVM are running "independently", there is no 
interfere in between.  For all the virtualization, there will be some 
assumption there, no one size fits all.  The specific example is PV Linux

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