Frage zu "spurious 8259A interrupt: IRQ7"

Hallo,

das Problem habe ich auch. Zu hast bestimmt ein Board mit SiS-Chipsatz?
Laut Kernel-Mailingliste kannst Du das aber ignorieren. Tue ich auch. Ich habe einiges probiert, konnte die Meldung allerdings nicht abstellen.

Was bedeutet die Meldung spurious 8259A interrupt: IRQ7?
Auf Intels Support-Seiten gab es eine kurze Erklärung dazu, die inzwischen leider entfernt wurde:
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In some applications, problem with a spurious IRQ7 might exist. For example, a spurios IRQ7 will occur under the follwing condition:
While the device is performing extensive I/O operations (IN AL, DX; OUT DX, AL), an external signal triggers IRQ3. Spurious enabling of IRQ7 and occassional losing of IRQ3 will be the outcome of this condition.

Design Consideration:

A spurious IRQ7 occurs, in the 8259, if any interrupt request duration is too short or hasn't met the setup time required by the 8259A.
This is a standard 8259 behavior under specific conditions. IRQ7 is triggered when IRQ7 is enabled and is requested OR when an interrupt request clears (by itself) before the CPU services the request. A software solution would be to write an IRQ7 handler that checks the various possible requesters and to handle any "missed" interrupts from any of those requesters.

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Was auch immer das heissen mag!