[Xen-devel] [PATCH 2 of 3] amd iommu: Use next_level instead of recalculating it

[Wei Wang <wei.wang2@xxxxxxx>]

# HG changeset patch
# User Wei Wang <wei.wang2@xxxxxxx>
# Date 1344872313 -7200
# Node ID 273471c6dedd1e66caab7e4eede72130e4e0c00f
# Parent  b6ca536658ac712c5f03b5ffedce3bb61d55adaf
amd iommu: Use next_level instead of recalculating it.

Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>

diff -r b6ca536658ac -r 273471c6dedd xen/drivers/passthrough/amd/pci_amd_iommu.c
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c       Mon Aug 13 17:38:30 
2012 +0200
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c       Mon Aug 13 17:38:33 
2012 +0200
@@ -408,8 +408,10 @@ 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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