[Xen-devel] [PATCH] IOMMU: Add two generic functions to vendor neutral interface

[Wei Wang2 <wei.wang2@xxxxxxx>]

Hi,
This patch adds 2 generic functions into the vendor neutral iommu interface, 
The reason is that from changeset 19732, there is only one global 
flag "iommu_enabled" that controls iommu enablement for both vtd and amd 
systems, so we need different code paths for vtd and amd iommu systems if this 
flag has been turned on. Also, the early checking  of "iommu_enabled" in  
iommu_setup() is removed to prevent iommu functionalities from been disabled 
on amd systems.
Thanks,
-Wei

Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
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Attachment: fix_global_variable.patch
Description: Text Data

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