[Xen-users] Dom0 and Domu sharing a physical IRQ results in eventual crash

["Christopher Isip" <cmisip@xxxxxxxxx>]

I have one xen machine  where dom0 libata and pcibacked domU eth0 share a physical IRQ.  I thought that the disk was bad (cause the system was crashing and giveing me disk errors) and replaced it with an IDE disk connected to a pcibacked SATA-IDE combo card.  Problem seems to have gone away.  The machine runs stably and hasn't crashed yet.

Now I have another machine where I pciback usb.  The usb port in domU shares a physical irq with the dom0 libata.  The machine crashes every few hours with disk errors.   In the domU, I see usb related errors as well (usblp removed, etc.).  

Is there anyway to prevent the irq sharing?  I think this is the cause of the crash.

Thanks
Chris

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