Re: [Xen-devel][RFC] Dynamic modes support for PV xenfb (included)

[Markus Armbruster <armbru@xxxxxxxxxx>]

Gerd Hoffmann <kraxel@xxxxxxxxxx> writes:

> Pat Campbell wrote:
>> Markus Armbruster wrote:
>>> I can't see how using grants for the page directory is an improvement
>>> over your previous iteration, which used pd[].  Can you explain?
>>>   
>> I will try, I am not the greatest communicator lately. 
>
> The real question is why stop half-way with the grant tables conversion?
[...]

Precisely.

Since we need to stay backward compatible, stable interfaces tend to
remain with us basically forever.  Maintaining the current mfn-based
interface plus a future interface fully based on grants seems okay to
me.  But please no intermediate steps.

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