HI I have a question Question about '/proc/interrupts' on Xen ARM.

I'm running Xen ARM 4.4.2 on Arndale Board.
I Attached a Image that is is result of 'cat /proc/interrupts' DomainU on Xen ARM.

I know that, event channel on Xen ARM only use the IRQ 31.
But xenbus, hvc_console, blk, eth0 use IRQ 32 ~ 38 not IRQ 31.

So I want to know event channel on Xen ARM not only use IRQ 31?


In attached Image

1. When Domain0 want to block data to DomainU, 
Domain0 write block data in blk I/O ring and Inject IRQ 34 instead of IRQ 31?

2. When Domain0 wants to block data to DomainU,
Domain0 write block data in blk I/O ring and Inject IRQ 31. 
After Injection IRQ 31, event channel driver in DomainU checks blk
I/O ring and increases count of IRQ 34 in /proc/interrupt?

Now i'm confusing...

Thanks