Re: 2.6.35-rc1 regression with pvclock and smp guests

Arjan Koers
2010-07-31T11:50:47Z

On 2010-07-31 03:38, Zachary Amsden wrote:
>
> How are you printing shadow.version? From a local variable captured
> during the barrier window or directly in a printk afterwards? If should
> never go backwards like this, and the vcpus come from a zalloc. This is
> not easily explainable by anything other than a memory ordering or
> compiler issue.

I'm reading shadow.version after the do-while loop and storing it in
an array to print it after the kernel finishes booting. I had to defer
my debug printk's, because they were affecting the results.