[Xen-devel] Re: Bizarre pv kernel ultra-high frequency rdtsc?!?

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 20/11/2009 23:45, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> -        _u.tsc_timestamp     = t->stime_local_stamp;
> -        _u.system_time       = t->stime_local_stamp;
> +        _u.tsc_timestamp     = t->stime_local_stamp - BIG_OFFSET;
> +        _u.system_time       = t->stime_local_stamp - BIG_OFFSET;

Ah, the line above is the bug. You should be subtracting BIG_OFFSET from
_u.tsc_timestamp only. Leave _u.system_time as it is. That'll fix all your
observed problems.

 -- Keir



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