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    SubjectRe: [PATCH] HPET RTC emulation: add watchdog timer
    Andi Kleen wrote:
    > Clemens Ladisch <lkml@cl.domainfactory-kunde.de> wrote:
    > > Andi Kleen wrote:
    > > > Clemens Ladisch wrote:
    > > > > To prevent the emulated RTC timer from stopping when
    > > > > interrupts are disabled for too long, implement the watchdog
    > > > > timer to restart it when needed.
    > > >
    > > > The interrupt handler should just read the time (it likely
    > > > has to do that anyways)
    > >
    > > Not in the current implementation.
    >
    > The standard HPET interrupt in x86-64 does this already at least.

    But it's slower than just doing a mod_timer which the RTC code does
    _anyway_, so we could just as well use it. Especially as the watchdog
    timer isn't actually expected to run in normal circumstances.


    Clemens

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