Re: [Xen-devel] [PATCH] mem_event: use wait queue when ring is full

[Tim Deegan <tim@xxxxxxx>]

At 12:39 +0100 on 19 Dec (1324298386), Olaf Hering wrote:
> mem_event: use wait queue when ring is full
> 
> This change is based on an idea/patch from Adin Scannell.
> 
> If the ring is full, put the current vcpu to sleep if it belongs to the
> target domain. The wakeup happens in the p2m_*_resume functions. Wakeup
> will take the number of free slots into account.
> 
> A request from foreign domain has to succeed once a slot was claimed
> because such vcpus can not sleep.
> 
> This change fixes also a bug in p2m_mem_paging_drop_page(). Up to now a
> full ring will lead to harmless inconsistency in the pager.

Thanks.  As before, I'm happy to apply this when Adin or Andres acks it. 

Cheers,

Tim.

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