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From: Tim Deegan <tim@xen.org>
To: Olaf Hering <olaf@aepfle.de>
Cc: xen-devel@lists.xensource.com
Subject: Re: [PATCH] mem_event: use wait queue when ring is full
Date: Thu, 22 Dec 2011 11:27:17 +0000	[thread overview]
Message-ID: <20111222112717.GA4094@ocelot.phlegethon.org> (raw)
In-Reply-To: <d910d738f31b4ee1a6b0.1324294786@probook.site>

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.

  reply	other threads:[~2011-12-22 11:27 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-19 11:39 [PATCH] mem_event: use wait queue when ring is full Olaf Hering
2011-12-22 11:27 ` Tim Deegan [this message]
     [not found] <mailman.4853.1324294828.12970.xen-devel@lists.xensource.com>
2012-01-11 18:02 ` Andres Lagar-Cavilla
2012-01-12 13:59   ` Olaf Hering
2012-01-12 16:11     ` Andres Lagar-Cavilla
2012-01-12 17:50       ` Adin Scannell
     [not found]         ` <B28ADCC9-CC5A-479D-8A7C-38FF4DB78A55@gridcentric.ca>
2012-01-12 19:22           ` Andres Lagar-Cavilla
     [not found] <mailman.4227.1323785898.12970.xen-devel@lists.xensource.com>
2011-12-15 14:56 ` Andres Lagar-Cavilla
2011-12-16 16:40   ` Olaf Hering
2011-12-16 17:04     ` Andres Lagar-Cavilla
2011-12-16 17:33       ` Olaf Hering
     [not found] <mailman.3873.1323460242.12970.xen-devel@lists.xensource.com>
2011-12-10  5:22 ` Andres Lagar-Cavilla
2011-12-13 13:40   ` Olaf Hering
  -- strict thread matches above, loose matches on Subject: below --
2011-12-09 19:23 Olaf Hering
2011-12-15 12:43 ` Tim Deegan
2011-12-15 13:15   ` Olaf Hering
     [not found] <mailman.3332.1323083995.12970.xen-devel@lists.xensource.com>
2011-12-05 15:45 ` Andres Lagar-Cavilla
2011-12-05 16:20   ` Olaf Hering
2011-12-05 16:34     ` Andres Lagar-Cavilla
2011-12-07 13:20       ` Olaf Hering
2011-12-07 16:27         ` Andres Lagar-Cavilla
2011-12-05 11:19 Olaf Hering
2011-12-05 11:33 ` Olaf Hering

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