RE: [Xen-ia64-devel] metaphysical mode

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

Dan,

We understand one approach is to do only needed for performance.  But
please understand the motivation was meant to consolidate code for
better maintenance in the future.

Specific to PSR.it/dt/rt patch, the code actually consolidate code from
multiple places.  So code size may even be smaller and easier to
maintain. ;-)  Though para-virt'd domains doesn't uses all of the modes
but the code sequence can be arranged not to impact para-virt'd domains
performance.  

Will you take such patch if we also maintain FAST_* mechanism?

The reason we like to have correct guest PSR.it/dt/rt is for hooking up
per-VP VHPT for para-virt'd domains support.  Through this effort,
Xen/ia64 can have consistent VHPT models for either per-VP or global
VHPT table support during runtime.  This is very important for the SMP
work.

Comments?

-Fred

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