[Xen-users] iommu=soft for Broadcom NICs PCI-passthru

["Fan, Huaxiang" <hufan@xxxxxxxxxxxx>]

Hi,

 

My environment is as below:

 

Hardware: Dell R210

NICs: Broadcom NetXtreme II BCN5709/5716 (w/o FLR)

Xen: xen 4.1.2

Kernel: 3.6.32.57 (final version of xen community)

Distribution: Centos 6.2 (upgraded to above kernel)

 

When I added iommu=soft to domU kernel boot line, the PCI passthru-ed NICs can be UP and RUNNING. Otherwise, omit iommu=soft option would make the passthru-ed NICs only UP but not RUNNING. Anybody can explain why and how can I use hardware iommu instead?

 

Thanks,

HUAXIANG FAN
Software Engineer II

WEBSENSE NETWORK SECURITY TECHNOLOGY R&D (BEIJING) CO. LTD.
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