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Re: [RFC PATCH 1/2] xen/memory : Add stats_table resource type
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: George Dunlap <George.Dunlap@xxxxxxxxxx>
- Date: Wed, 22 Jun 2022 10:05:25 +0000
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- Cc: Matias Ezequiel Vara Larsen <matiasevara@xxxxxxxxx>, Matias Ezequiel Vara Larsen <matias.vara@xxxxxxxx>, Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Dario Faggioli <dfaggioli@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
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- Thread-topic: [RFC PATCH 1/2] xen/memory : Add stats_table resource type
> On 22 Jun 2022, at 09:59, Jan Beulich <jbeulich@xxxxxxxx> wrote:
>
[snip]
> In general I also have to admit that I'm not sure the exposed data really
> qualifies as a "resource", and hence I'm not really convinced of your use
> of the resource mapping interface as a vehicle.
I’m not sure if I’d call any of the things currently mappable via that
interface (ioreq pages, vmcall buffers, etc) “resources”. I’m not sure why the
name was chosen, except perhaps that it was meant to be a more generalized form
of “page” or “pages".
The alternate is to try to plumb through a new ad-hoc hypercall. Andy
suggested Matias use this interface specifically to avoid having to do that;
and it sounds like he believes the interface was designed specifically for this
kind of thing.
-George
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