[Xen-changelog] [xen-unstable] amd iommu: use next_level instead of recalculating it

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Wei Wang <wei.wang2@xxxxxxx>
# Date 1347364912 -7200
# Node ID ae59ecd8a52f3016ef5444446bfd77b780dafc87
# Parent  0baddae93c5cf9320dbf59695a4476cc31f1fb60
amd iommu: use next_level instead of recalculating it

Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
Committed-by: Jan Beulich <jbeulich@xxxxxxxx>
---


diff -r 0baddae93c5c -r ae59ecd8a52f xen/drivers/passthrough/amd/pci_amd_iommu.c
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c       Tue Sep 11 14:00:04 
2012 +0200
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c       Tue Sep 11 14:01:52 
2012 +0200
@@ -409,8 +409,10 @@ static void deallocate_next_page_table(s
             if ( (next_table_maddr != 0) && (next_level != 0)
                 && iommu_is_pte_present((u32*)pde) )
             {
+                /* We do not support skip level yet */
+                ASSERT(next_level == level - 1);
                 deallocate_next_page_table(
-                    maddr_to_page(next_table_maddr), level - 1);
+                    maddr_to_page(next_table_maddr), next_level);
             }
         }
     }

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