> In rtl8139.c  There is a
> 
> /* PCI interrupt timer */
>     QEMUTimer *timer;

  QEMUTimer is a virtual timer (might use various virtual clocks) used by
hw or something else. In thise case, when the timer is time out, rtl8139
will generate a interrupt.

Regards,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667

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