Re: [Xen-devel] xentrace and MSR_READ/MSR_WRITE

["George Dunlap" <George.Dunlap@xxxxxxxxxxxxx>]

On Wed, Jan 7, 2009 at 1:42 AM, James Harper
<james.harper@xxxxxxxxxxxxxxxx> wrote:
> I did 'xentrace --time-interval=5 xentrace.out' to capture some data,
> and then ran it through 'xentrace_format' using the supplied example
> defs file. I can see some PF_XEN entries with virt=0xFFFE0080 (address
> of TPR), but I want to know the value being written, which I don't think
> is there.

Are you running -unstable, or 3.3?

Between 3.2 and 3.3, the mmio value got un-traced (with the re-working
of the emulation infrastructure), and I didn't catch it in time.  It
should work in -unstable from cs 18749.

> I'm also only seeing a handful of those records - I have 4 Windows
> domains running on this test machine so there should be plenty of
> 'action' in those 5 seconds.

What version of Windows are you running?  w2k3sp2 has lazy TPR
updates, so it does a big reduction in the amount of TPR writes.

If you want to send me a trace, I can take a look at it and see what I
find as well...

 -George

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