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Re: [xen-devel] System time monotonicity

To: "dan.magenheimer@xxxxxxxxxx" <dan.magenheimer@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [xen-devel] System time monotonicity
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Tue, 08 Apr 2008 17:42:24 +0100
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On 8/4/08 17:34, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> Sorry, a little slow on responding here, only took a year ;-)
> Where is the code that does this independent TSC sync'ing?  I see
> code in smpboot.c that seems to do this at startup (though exactly
> how I admit I haven't yet figured out... looks like some kind of
> rendezvous loop triggered by the BP?).  But I don't see where/how
> this gets called "every couple of seconds", nor do I see any writing
> to the TSC (except setting BP and each AP to zero at startup).


 -- Keir

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