[Xen-devel] INT-X fallback in mthca driver

To:	"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "general@xxxxxxxxxxxxxxxxxxxxx" <general@xxxxxxxxxxxxxxxxxxxxx>, Roland Dreier <rdreier@xxxxxxxxx>
Subject:	[Xen-devel] INT-X fallback in mthca driver
From:	subbu kl <subbukl@xxxxxxxxx>
Date:	Thu, 19 Feb 2009 18:25:55 +0530
Cc:
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I am trying PCI passthrogh of Mellanox Infinihost III Lx chip based Infiniband and TG3 ethernet PCIe cards on Centos 5.2 Full virtualized guest with Xen 3.3.0

ib_mthca driver fails with
QUERY_FW failed
probe failed with errror -11

But interestingly tg3 driver says "Could not get MSI interrupts falling back to INTx" and works fine

So,
1) why Xen could not get the MSI interrupts working ?
2) Should we have INT-x falling back method for Mellanox driver also if its needed ?

~subbu

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[Xen-devel] INT-X fallback in mthca driver