[Xen-changelog] [xen staging] AMD/IOMMU: drop redundant code

[patchbot@xxxxxxx]

commit 66b282bbb1aa64a3d7a6f7d705cf10ba844cd611
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Wed Feb 12 10:54:08 2020 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Feb 12 10:54:08 2020 +0100

    AMD/IOMMU: drop redundant code
    
    The level 1 special exit path is unnecessary in iommu_pde_from_dfn() -
    the subsequent code takes care of this case quite fine.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/drivers/passthrough/amd/iommu_map.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/xen/drivers/passthrough/amd/iommu_map.c 
b/xen/drivers/passthrough/amd/iommu_map.c
index 2f3b47b366..3b7cf649ca 100644
--- a/xen/drivers/passthrough/amd/iommu_map.c
+++ b/xen/drivers/passthrough/amd/iommu_map.c
@@ -194,12 +194,6 @@ static int iommu_pde_from_dfn(struct domain *d, unsigned 
long dfn,
 
     next_table_mfn = mfn_x(page_to_mfn(table));
 
-    if ( level == 1 )
-    {
-        pt_mfn[level] = next_table_mfn;
-        return 0;
-    }
-
     while ( level > 1 )
     {
         unsigned int next_level = level - 1;
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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