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Re: [Xen-devel] Wait queue support for 4.3

On 12/10/12 20:34, Keir Fraser wrote:
On 12/10/2012 19:53, "Andres Lagar-Cavilla" <andreslc@xxxxxxxxxxxxxx> wrote:

I don't see any dependency. And Tim has already proposed patches for
use-case 2, in fact, as you noted. So, shouldn't they simply be polished up
and applied as soon as possible? Basically, for mm type things, Tim is your
man, either as author or reviewer.
Ok. Wanted to ascertain where we stand on things.

Tim's patches crash guests because there are all sorts of spinlocks being
held. That's the gist of the mm work that needs to be done. And a separate
Yes, that's a *mm* can of worms. :) Tim is the first port of call, and
working out who actually does the work, and what work that is, will be the
the ensuing discussion.
So does it make sense to track this on the 4.3 feature list (obviously with "owner: ?" until that's sorted out)? Andres, would the summary below be accurate enough?

* Waitqueues for hypervisor accesses to shared frames which fail with -ENOMEM
  owner: ?
  status: First draft posted back in February, much more work to do.


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