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    SubjectRe: [PATCH 2/6] lguest tsc fix
    On Tue, 2007-06-05 at 20:15 +0200, Andi Kleen wrote:
    > On Wed, Jun 06, 2007 at 12:56:36AM +1000, Rusty Russell wrote:
    > > In recent -mm kernels, the TSC capability cannot be disabled,
    > > resulting in a divide by zero error in the normal sched_clock.
    > That will hopefully change. I hope hpa will just undo this.
    > >
    > > The correct fix is to have a special lguest sched_clock
    > > implementation: this is as simple as it gets.
    > But gettimeofday might still use it. Is that ok for you?

    Yes, I don't think it will be any worse than before. Basically the
    guest uses a dumb jiffies-based clock. The TSC patch later in this same
    series changes it back to use the native sched_clock, and overrides
    tsc_khz instead (based on information from the host).


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