RE: [Xen-devel] [PATCH 1/9] Add cpu idle pwr mgmt to xen

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

>>> "Tian, Kevin" <kevin.tian@xxxxxxxxx> 30.04.08 11:42 >>>
>What do you mean by partly copying things? For a 32-on-64 guest,
>all pointers from guest are 32-bit and compat_handler_okay already
>ensures compat pointers validity. Only native structure may have 
>64-bit pointer field, which is checked by common guest_handle_okay
>if from a 64bit guest, or is trusted by increasing addr limitation if
>from compat layer...

VCPUOP_register_runstate_memory_area is an example of this.

Jan


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