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

[George Dunlap <george.dunlap@xxxxxxxxxxxxx>]

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
> > discussion.
> 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.

 -George


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