Re: [Xen-devel] [PATCH RFC 10/18] xen: arm: add batch support to the XENMEM_p2m_lookup operation

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 18.05.16 at 18:32, <andrii.anisov@xxxxxxxxxxxxxxx> wrote:

First of all, the description is misleading: You don't add anything
_to_ XENMEM_p2m_lookup, you simply add this new sub-op.

And then, we've had requests to add something like this more
than once, and so far they've always got rejected. See the
removed XENMEM_translate_gpfn_list. Hence an empty
description here is definitely insufficient, as you'll need to
explain why _now_ all of the sudden this is needed. Perhaps
it would have been a good idea if you had asked up front
whether something like this can be re-added, or what
alternatives there are without doing so.

I'll therefore not comment on the actual patch, which also has
issues (but which aren't worth addressing if the whole thing is
going to get dropped).

Jan


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