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    SubjectRe: [Regression] Negative time on Acer Ferrari One with current -git
    Date
    On Saturday 22 May 2010, Thomas Gleixner wrote:
    > On Sat, 22 May 2010, Thomas Gleixner wrote:
    >
    > > On Sat, 22 May 2010, Rafael J. Wysocki wrote:
    > > > On Saturday 22 May 2010, Thomas Gleixner wrote:
    > > >
    > > > > Also which clocksource is used ?
    > > >
    > > > hpet
    > >
    > > Hmm, there is only one hpet related commit sin .34: 30a564be9d
    > > and I can hardly see how this should be related.
    >
    > Does the problem persist if you disable HPET on the kernel command line ?

    I didn't try that, but I bisected it in the meantime which lead to:

    commit 64ce4c2f5252f25798117fa80a027993163d6d84
    Author: John Stultz <johnstul@us.ibm.com>
    Date: Thu Mar 11 14:04:47 2010 -0800

    time: Clean up warp_clock()

    warp_clock() currently accesses timekeeping internal state directly, which
    is unnecessary. Convert it to use the proper timekeeping interfaces.

    Signed-off-by: John Stultz <johnstul@us.ibm.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

    So I don't think it's an hpet issue. :-)

    I'm now going to revert that commit and see what happens.

    Thanks,
    Rafael


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