Addendum: NE2000 slow interrupts safe?

Richard Gooch (rgooch@workaholix.atnf.CSIRO.AU)
Thu, 16 Apr 1998 17:47:37 +1000

Hi, all. Argh! Following up on my previous message (before someone
tells me I'm blind), I note that the NE2000 interrupt handler is
indeed called with other interrupts enabled. I had thought that the
distinction between fast and slow interrupts on x86 had been phased
out, and assumed that meant interrupts were disabled for both.

Having looked closer at the x86 implementation, I now see that in fact
there still is a distinction: fast handlers have interrupts disabled
while slow ones have them enabled. Both types have bottom halves
executed. In the old (2.0.x) implementation, fast interrupts did *not*
call bottom halves.

Sorry for any confusion I may have caused.

Regards,

Richard....

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