[Xen-devel] irq sharing in Xen

To:	xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-devel] irq sharing in Xen
From:	"sanjay kushwaha" <sanjay.kushwaha@xxxxxxxxx>
Date:	Wed, 12 Jul 2006 18:03:52 -0400
Delivery-date:	Wed, 12 Jul 2006 15:04:15 -0700
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Hi Folks,
Is IRQ sharing between domains supported in Xen?

I am trying to share a physical IRQ between dom0 and an HVM guest. but it is not working.

when the IRQ is owned only by dom0:
- I inject an irq into dom0 (send_guest_pirq)
- I get back an EOI in xen (__pirq_guest_eoi)

when the IRQ is shared between dom0 and hvm domain
- I inject an irq into dom0 (send_guest_pirq)
- I do not receive the EOI from dom0

Could someone please clarify on this?

Thanks,
Sanjay

--
----------------------
PhD Student, Georgia Tech
http://www.cc.gatech.edu/~ksanjay/

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[Xen-devel] irq sharing in Xen