From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Dan Magenheimer <dan.magenheimer@oracle.com>
Cc: Gerry Reno <greno@verizon.net>,
xen-devel@lists.xensource.com, konrad.wilk@oracle.com
Subject: Re: RE: AMD Phenom II 940: Upgrade to 2.6.32.12 fixes it and upgrades CPU from 3.1Ghz to 1.2Thz!
Date: Mon, 10 May 2010 10:56:20 -0700 [thread overview]
Message-ID: <4BE848C4.1090005@goop.org> (raw)
In-Reply-To: <81240ce8-4265-431e-b5e6-71c5340e2af3@default>
On 05/10/2010 09:40 AM, Dan Magenheimer wrote:
>>>>> enlighten.c, 'd0 domain attempted wrmsr', 'Detected 1226681.732 MHz
>>>>> processor.'(a 1.2 TeraHz processor??? - the processor is actually a
>>>>>
>> 3.1
>>
>>> I'm wondering if this bothers delay loop timings, etc. ???
>>>
>> Dan, thoughts?
>>
> This info is obtained from Xen via the shared_info struct, so
> I'd bet the shared_info struct is getting trashed.
>
> Or, for awhile, Jeremy had some code that made it possible
> for pvclock to use multiple shared_info structs to detect
> TSC skew.
I had a patch for multiple pvclock structures so that they could be
exported to userspace, but I screwed up the Xen side so that it was
trashing memory on context switch. But the use of pvclock in usermode
is fairly iffy anyway, since there are concerns about how to attain the
monotonicity guarantees required by clock_gettime, etc. So at the
moment, neither Xen nor the .32+ kernels have support for that.
J
prev parent reply other threads:[~2010-05-10 17:56 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-23 17:50 Cannot load latest 2.6.32.10 kernel on AMD quad-core Gerry Reno
2010-04-23 18:27 ` Boris Derzhavets
2010-04-23 18:55 ` Boris Derzhavets
2010-04-23 20:38 ` Gerry Reno
2010-04-23 21:31 ` Boris Derzhavets
2010-04-24 6:12 ` Gerry Reno
2010-04-24 6:32 ` Gerry Reno
2010-04-24 7:34 ` Boris Derzhavets
2010-04-24 16:41 ` Gerry Reno
2010-04-24 17:30 ` Boris Derzhavets
2010-04-24 17:37 ` Boris Derzhavets
2010-04-24 17:41 ` Boris Derzhavets
2010-04-24 18:07 ` Gerry Reno
2010-04-24 18:18 ` Boris Derzhavets
2010-04-24 22:24 ` Gerry Reno
2010-04-25 6:44 ` Pasi Kärkkäinen
2010-04-25 11:16 ` Boris Derzhavets
2010-04-25 15:37 ` Gerry Reno
2010-04-25 16:10 ` Boris Derzhavets
2010-04-25 23:18 ` Mike Viau
2010-04-26 0:49 ` Gerry Reno
2010-04-26 2:10 ` Mike Viau
2010-04-26 2:18 ` Gerry Reno
2010-04-25 22:15 ` Gerry Reno
2010-04-26 2:10 ` Gerry Reno
2010-04-26 4:12 ` Gerry Reno
2010-04-26 20:04 ` Pasi Kärkkäinen
2010-04-26 21:26 ` Gerry Reno
2010-04-26 21:52 ` Pasi Kärkkäinen
2010-04-26 23:36 ` Gerry Reno
2010-04-27 0:00 ` Gerry Reno
2010-04-27 2:48 ` Gerry Reno
2010-04-27 9:15 ` Pasi Kärkkäinen
2010-04-27 17:35 ` Gerry Reno
2010-04-29 13:54 ` Gerry Reno
2010-04-29 14:41 ` Mike Viau
2010-04-29 14:46 ` Gerry Reno
2010-04-29 15:11 ` Mike Viau
2010-04-29 16:50 ` Gerry Reno
2010-04-25 6:53 ` Gerry Reno
2010-04-25 10:22 ` Pasi Kärkkäinen
2010-05-03 16:18 ` Konrad Rzeszutek Wilk
2010-05-03 17:18 ` Gerry Reno
2010-05-03 20:36 ` Konrad Rzeszutek Wilk
2010-05-03 21:23 ` Gerry Reno
2010-05-05 0:42 ` Gerry Reno
2010-05-05 17:54 ` AMD Phenom II 940: mm/vmalloc.c:110 vmap_page_range_noflush Konrad Rzeszutek Wilk
2010-05-06 3:18 ` Gerry Reno
2010-05-06 5:52 ` Pasi Kärkkäinen
2010-05-06 17:57 ` Jeremy Fitzhardinge
2010-05-06 19:39 ` Gerry Reno
2010-05-07 0:21 ` Gerry Reno
2010-05-07 2:22 ` Gerry Reno
2010-05-07 6:05 ` Pasi Kärkkäinen
2010-05-07 6:21 ` Boris Derzhavets
2010-05-07 16:44 ` Gerry Reno
2010-05-07 21:53 ` Gerry Reno
2010-05-08 7:20 ` Boris Derzhavets
2010-05-10 14:10 ` Konrad Rzeszutek Wilk
2010-05-10 16:03 ` Gerry Reno
2010-05-10 16:17 ` AMD Phenom II 940: Upgrade to 2.6.32.12 fixes it and upgrades CPU from 3.1Ghz to 1.2Thz! Konrad Rzeszutek Wilk
2010-05-10 16:40 ` Dan Magenheimer
2010-05-10 17:40 ` Gerry Reno
2010-05-10 17:56 ` Jeremy Fitzhardinge [this message]
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