[Xen-ia64-devel] [PATCH] Fix some IPF Xen VT-d bugs

["Cui, Dexuan" <dexuan.cui@xxxxxxxxx>]

In arch_domain_create(): when xen creates Dom0, need_iommu(d) is false, so 
iommu_domain_init() is not invoked, as a result, eventually iommu is not 
enabled properly.

In IA64 Xen, physdev_map_pirq()/physdev_unmap_pirq() are kept dummy since we 
don't support MSI in IA64 Xen now, but here they shouldn't return -ENOSYS 
because xend invokes them (the x86 version of them is necessary for x86 Xen); 
in IPF Xen if they return -ENOSYS, xend would disallow us to create IPF HVM 
guest with devices assigned. Here They can return 0 instead.

Signed-off-by: Dexuan Cui <dexuan.cui@xxxxxxxxx>

Attachment: fix_vtd.patch
Description: fix_vtd.patch

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