Re: [Xen-devel] [PATCH v3 2/5] xentrace: Memory/Page Mapping support for DOMID_XEN on ARM

[Ben Sanda <Ben.Sanda@xxxxxxxxxxxxxxx>]

Julien, George, Andrew, and Stefano,

> Thank you for the explanation.
> 
> The ARM implementation of share_xen_page_with_guest is nearly the same
> as the x86 one. However, the type is never used so far for the P2M
> code.
> 
> So far, all ARM domains have been auto-translated. DOMID_XEN is the
> first non auto-translated domain.
> 
> We could make DOMID_XEN an auto-translated domain by introducing page
> table for dummy domain. This would make the code cleaner but use more
> memory (allocation of 3 level of page tables).
> 
> Stefano, do you have any opinions on this?

How would you like to me proceed with this issue with regard to the
patch set? It sounds like this is a more far reaching architecture
design question for ARM. I have made the other changes to this version
of the code requested, should I submit v4? Or wait for a further
resolution to this discussion?

Thanks,
Ben Sanda

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