From: Thomas Pfeuffer <thomas.pfeuffer@mytum.de>
To: xen-devel@lists.xensource.com
Subject: Question on pci-passthrough and event delivery
Date: Thu, 08 Apr 2010 10:48:03 +0200 [thread overview]
Message-ID: <4BBD9843.60903@mytum.de> (raw)
Hello,
I am using pci-passthrough mechanism in Xen 3.4.2-rc2 to passthrough the
only Network Interface Card to a pv driver domain.
I have observed in xentrace output, that everytime a network packet
arrives, the Xen hypervisor delivers an event to the driver domain and
to dom0. I would think, that it is not neccassary to inform dom0, since
only the driver domain has access to the NIC.
Why is the interrupt from the NIC delivered to dom0 via an event, too?
Is it neccassary for pciback in dom0?
regards,
Thomas
next reply other threads:[~2010-04-08 8:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-08 8:48 Thomas Pfeuffer [this message]
2010-04-08 14:03 ` Question on pci-passthrough and event delivery Konrad Rzeszutek Wilk
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