Re: [Qemu-devel] [PATCH 1/3] Change qemu_set_irq() to return status information.

[Paul Brook]

On Sunday 29 June 2008, Gleb Natapov wrote:
> The return value is less then zero if interrupt is masked, zero if it
> is known that interrupt is lost (due to coalescing) or greater then zero
> if interrupt is delivered or was successfully queued for delivery by
> interrupt controller. Device emulation can use this info as it pleases.
> Included patch adds detection of interrupt coalescing into PIC and APIC
> code for edge triggered interrupts.

This is woefully incomplete, and obviously hasn't been tested on anything 
other than x86 targets.

Paul