Re: PCI, ACPI, IRQ, IOAPIC: reroute PCI interrupt to legacy boot interrupt equivalent

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On Wed, 14 Jan 2009, Eric W. Biederman wrote:
> Jon Masters <jcm@xxxxxxxxxx> writes:
> 
> Which leads me to conclude.
> - IRQ handling in the RT kernel is hopelessly broken.
> - IRQ threads are a bad idea.

I would rephrase that to

  -- boot interrupts are hopelessly broken

> 
> Because it is all leading to stupid patches and stupid development.

Hmm, WTF should we have maskable interrupts for anyway? Sounds like broken 
hardware design to me.

> 
> None of this works reliably on level triggered ioapic irqs.
> 

I guess this means that ioapic's are not for RTOS of any kind.

-- Steve

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