Re: [Xen-devel] RE: Weird NOW() values after host S3 resume

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Xen 3.2.0 actually has the first of those changesets. If you upgrade to Xen
3.2.1 then you have the second of them also.

 -- Keir

On 22/5/08 08:11, "Xu, Dongxiao" <dongxiao.xu@xxxxxxxxx> wrote:

> Or you may port Xen C/S 16688 and 16882 to your tree and see if this issue
> still exists. :-)
> 
> Best regards,
> -- Dongxiao
> 
> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Xu, Dongxiao
> Sent: 2008年5月22日 10:50
> To: Guy Zana; xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: Tian, Kevin
> Subject: [Xen-devel] RE: Weird NOW() values after host S3 resume
> 
> Hi, Guy
>     Could you have a try of the latest Xen-unstable tree to see if this issue
> still exists? I remember some S3 time patches are added after Xen-3.2 stable
> release. 
> 
> Thanks!
> -- Dongxiao
> 
> ________________________________________
> From: Guy Zana [mailto:guy@xxxxxxxxxxxx]
> Sent: 2008年5月22日 0:09
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: Tian, Kevin; Xu, Dongxiao
> Subject: Weird NOW() values after host S3 resume
> 
> Hi all,
> 
> It seems that something is messed up with the calibration of the TSCs after
> resuming from sleep.
> 
> First, after resume NOW() issued from CPU0 gives a value that is much lower
> than before sleep, and it is probably returned to the same (default?) value
> after each resume.
> Second, after each resume there is an increased differences between CPU0 and
> CPU1 NOW() values, I'm not really sure about this one because I didn't tried
> to sync my test against the HPET so take that into consideration.
> 
> Can you check this out please?
> 
> The chipset is Intel GM965/ICH8, the cpu is T7300.
> Observed in Xen 3.2 stable release.
> 
> Thanks,
> Guy.
> 
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