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Re: [Xen-devel] [PATCH 8 of 9] x86/mm: New domctl: Perform sharing audit


  • To: "Jan Beulich" <JBeulich@xxxxxxxx>
  • From: "Andres Lagar-Cavilla" <andres@xxxxxxxxxxxxxxxx>
  • Date: Mon, 12 Dec 2011 20:22:55 -0800
  • Cc: andres@xxxxxxxxxxxxxx, keir.xen@xxxxxxxxx, tim@xxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, adin@xxxxxxxxxxxxxx
  • Delivery-date: Tue, 13 Dec 2011 04:24:22 +0000
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>  >>> On 09.12.11 at 21:22, Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
> wrote:
>> Sharing audits are heavyweight, so instead of performing them inline,
>> we make them callable via a domctl.
>
> As said before - there's again no consumer of this new code within the
> series, and hence you're asking to add dead code.

Stands to reason that audit domctls are generally useful things. We
already have p2m audit domctls with no consumer. And that's not the end of
the list of things in the tree without a consumer.

I think your comments about dead code are a bit excessive. The only
consumer in this tree of the sharing API is memshr. Have a look at how
memshr is currently linked into blktap2. Maybe we should just submit one
patch removing all of memshr and the Xen sharing code?

Instead, we're trying to undo the bit rot here.

Thanks,
Andres
>
> Jan
>
>> Signed-off-by: Adin Scannell <adin@xxxxxxxxxxx>
>
>
>



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