Messages in this thread | | | Date | Wed, 12 Aug 1998 11:23:41 +1200 | From | Chris Wedgwood <> | Subject | Re: interrupt latency |
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On Tue, Aug 11, 1998 at 09:05:06AM -0400, Richard B. Johnson wrote:
> That's not how I would do it. I would execute an ioctl to make your > driver do the work. The driver is already installed with its > interrupt attached. The ioctl would return the results....
That might be a requirement anyhow. I just tried running:
main() { for(;;){ __asm__("int $15"); } }
and it segfaults. I was hoping to see the interrupt counter for int 15 increase, but alas, it does not, and my isr never gets called.
I assume the only way I can induce the interrupt is from ring 0?
-cw
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