From: "Zhang, Yang Z" <yang.z.zhang@intel.com>
To: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Cc: Keir Fraser <keir@xen.org>
Subject: lock in vhpet
Date: Tue, 17 Apr 2012 03:26:18 +0000 [thread overview]
Message-ID: <A9667DDFB95DB7438FA9D7D576C3D87E0D84A1@SHSMSX101.ccr.corp.intel.com> (raw)
Hi keir
I noticed that the changeset 15289 introuduced locking to platform timers. And you mentioned that it only handy for correctness. Are there some potential issues which is fixed by this patch? If not, I wonder why we need those locks? I think it should be OS's responsibly to guarantee the access sequentially, not hypervisor. Am I right?
I don't know whether all those locks are necessary, but at least the lock for vhpet, especially the reading lock, is not required.
best regards
yang
next reply other threads:[~2012-04-17 3:26 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-17 3:26 Zhang, Yang Z [this message]
2012-04-17 7:27 ` lock in vhpet Keir Fraser
2012-04-18 0:52 ` Zhang, Yang Z
2012-04-18 7:13 ` Keir Fraser
2012-04-18 7:55 ` Zhang, Yang Z
2012-04-18 8:29 ` Keir Fraser
2012-04-18 9:14 ` Keir Fraser
2012-04-18 9:30 ` Keir Fraser
2012-04-19 5:19 ` Zhang, Yang Z
2012-04-19 8:27 ` Tim Deegan
2012-04-19 8:47 ` Keir Fraser
2012-04-23 7:36 ` Zhang, Yang Z
2012-04-23 7:43 ` Jan Beulich
2012-04-23 8:15 ` Zhang, Yang Z
2012-04-23 8:22 ` Keir Fraser
2012-04-23 9:14 ` Tim Deegan
2012-04-23 15:26 ` Andres Lagar-Cavilla
2012-04-24 9:15 ` Tim Deegan
2012-04-24 13:28 ` Andres Lagar-Cavilla
2012-04-23 17:18 ` Andres Lagar-Cavilla
2012-04-24 8:58 ` Zhang, Yang Z
2012-04-24 9:16 ` Tim Deegan
2012-04-25 0:27 ` Zhang, Yang Z
2012-04-25 1:40 ` Andres Lagar-Cavilla
2012-04-25 1:48 ` Zhang, Yang Z
2012-04-25 2:31 ` Andres Lagar-Cavilla
2012-04-25 2:36 ` Zhang, Yang Z
2012-04-25 2:42 ` Andres Lagar-Cavilla
2012-04-25 3:12 ` Zhang, Yang Z
2012-04-25 3:34 ` Andres Lagar-Cavilla
2012-04-25 5:18 ` Zhang, Yang Z
2012-04-25 8:07 ` Jan Beulich
2012-04-26 21:25 ` Tim Deegan
2012-04-27 0:46 ` Zhang, Yang Z
2012-04-27 0:51 ` Andres Lagar-Cavilla
2012-04-27 1:24 ` Zhang, Yang Z
2012-04-27 8:36 ` Zhang, Yang Z
2012-04-27 3:02 ` Andres Lagar-Cavilla
2012-04-27 9:26 ` Tim Deegan
2012-04-27 14:17 ` Andres Lagar-Cavilla
2012-04-27 21:08 ` Andres Lagar-Cavilla
2012-05-16 11:36 ` Zhang, Yang Z
2012-05-16 12:36 ` Tim Deegan
2012-05-17 10:57 ` Tim Deegan
2012-05-28 6:54 ` Zhang, Yang Z
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