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

[Steven Rostedt]

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/