RE: [Xen-devel] Essay on an important Xen decision (long)

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Mark Williamson
>Sent: 2006年1月12日 0:23
>
>> Is VP on x86 expensive in terms of performance or complexity?
>
>One nasty thing for VP on x86 is the compulsory hardware PT walker - IA64
>allows the hypervisor to handle TLB fills on behalf of a guest, so that it
>can perform phys-to-machine translation.  IA64 has a hardware PT walker but
>you aren't *forced* to use it.

To make it clearer, this hardware PT walker on IA64 is not like normal 
multi-level PT walker on x86. Instead it can be a virtually linear table, or a 
hash table which is configurable. ;-)

Thanks,
Kevin

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