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iommu_set_root_entry
2008 Aug 29
0
[PATCH] vtd: fix Dom0 S3 when VT-d is enabled.
Now if VT-d is enabled, when Dom0 does S3, Xen doesn''t suspend/resume
the IOMMU states.
The patch adds the missing invocations of iommu_suspend()/iommu_resume()
and makes some nesessary fixes:
1) In iommu_set_root_entry(), we should not re-allocate the root-entry
when Xen returns from S3;
2) Define the array iommu_state correctly (u8 -> u32);
3) Only save/restore the necessary IOMMU