From: Olaf Hering <olaf@aepfle.de>
To: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Cc: andres@gridcentric.ca, xen-devel@lists.xensource.com,
tim@xen.org, adin@gridcentric.ca
Subject: Re: [PATCH] x86/mm: Improve ring management for memory events. Do not lose guest events
Date: Mon, 16 Jan 2012 17:22:29 +0100 [thread overview]
Message-ID: <20120116162229.GA32190@aepfle.de> (raw)
In-Reply-To: <20120116150801.GB30327@aepfle.de>
On Mon, Jan 16, Olaf Hering wrote:
> I will prepare a patch to improve the check wether the ring is
> available. As you said, it can disappear any time.
Your changes to mem_event_disable() already contain the changes I would
have made as well, making changes only with the ring lock held.
Minor detail:
In mem_event_enable(), the call to mem_event_ring_lock_init() should be
moved up before the pointers are assigned to close the tiny window
between lock init and assignment.
Olaf
next prev parent reply other threads:[~2012-01-16 16:22 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-11 18:28 [PATCH] x86/mm: Improve ring management for memory events. Do not lose guest events Andres Lagar-Cavilla
2012-01-12 11:56 ` Tim Deegan
2012-01-12 16:05 ` Andres Lagar-Cavilla
2012-01-13 9:50 ` Olaf Hering
2012-01-13 15:14 ` Andres Lagar-Cavilla
2012-01-13 19:57 ` Olaf Hering
2012-01-13 20:05 ` Andres Lagar-Cavilla
2012-01-16 15:08 ` Olaf Hering
2012-01-16 16:22 ` Olaf Hering [this message]
2012-01-16 15:04 ` Olaf Hering
2012-01-16 15:08 ` Andres Lagar-Cavilla
2012-01-16 15:10 ` Olaf Hering
2012-01-16 15:22 ` Olaf Hering
-- strict thread matches above, loose matches on Subject: below --
2012-01-16 15:39 Andres Lagar-Cavilla
2012-01-16 15:41 ` Olaf Hering
2012-01-19 10:39 ` Tim Deegan
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