pc386 IRQs not from i8259

[Joel Sherrill]

Hi,

I am doing the groundwork for SMP support in RTEMS.
On the x86, an OS can generate Interprocessor Interrupts
(IPIs) to request that another CPU do something.
Unfortunately, it appears that the current IRQ
code is assuming that all interrupts are generated
from the i8259's.

The IPI can have any vector number.

My first thought is to use the first interrupt vector
after all the ones from the PICs and make things
work.

Any suggestions?

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Joel Sherrill, Ph.D.             Director of Research&  Development
joel.sherrill at OARcorp.com        On-Line Applications Research
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