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SubjectRe: Today Linus redesigns the networking driver interface (was Re: tulip driver in ...)
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> The trouble is that on the x86, disabling just some interrupts means
> you have to talk to the interrupt controller, which is excessively
> slow.

Not really. In fact trying to do hardware interrupt masking on the APIC
(and its masking you want not disabling to be pedantic but to make it clear)
is rather hard.

You can generally do it in software instead. In fact rtlinux runs the linux
kernel as a task being message passed interrupts when it isnt asserting
(its now private) cli/sti

Alan


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