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Date: Thu, 25 Mar 2010 22:37:08 +0100 (CET)
Subject: Re: Continual reading from the PowerPc time base register is not
	stable
From: "Segher Boessenkool" <segher@kernel.crashing.org>
To: "Csdncannon" <csdncannon@gmail.com>
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>          In my program, the value of the 64-bit time base register is read
> out, and you will find the later value is even smaller than the earlier
> value from the log “log_timebase”.

>          Do you have any idea about this problem, thanks for your any
> advice. Attached is the code and log.

Your code has a problem, you do (upper << 32) | lower, it should
be ((unsigned long long)upper << 32) | lower .

That is not the problem though: in your TBL, the bit with value
0x40 is stuck to 1.  Broken hardware?


Segher