2016-04-28 15:05+0800, Peter Xu:
> This is to better emulate IOAPIC version 0x1X hardware. Linux kernel
> leveraged this "feature" to do explicit EOI since EOI register is still
> not introduced at that time. This will also fix the issue that level
> triggered interrupts failed to work when IR enabled (tested with Linux
> kernel version 4.5).
> 
> Signed-off-by: Peter Xu <pet...@redhat.com>
> ---

Reviewed-by: Radim Krčmář <rkrc...@redhat.com>

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