[edk2-devel] [Patch V5 05/22] UefiCpuPkg/CpuPageTableLib:Clear PageSize bit(Bit7) for non-leaf

duntan posted 22 patches 1 year, 6 months ago
There is a newer version of this series
[edk2-devel] [Patch V5 05/22] UefiCpuPkg/CpuPageTableLib:Clear PageSize bit(Bit7) for non-leaf
Posted by duntan 1 year, 6 months ago
Clear PageSize bit(Bit7) for non-leaf entry in PageTableLibSetPnle.
This function is used to set non-leaf entry attributes so it should
make sure that the PageSize bit of the entry should be 0.

Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
---
 UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
index 6ab2961790..a242710afa 100644
--- a/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
+++ b/UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
@@ -202,7 +202,8 @@ PageTableLibSetPnle (
     Pnle->Bits.Nx = Attribute->Bits.Nx;
   }
 
-  Pnle->Bits.Accessed = 0;
+  Pnle->Bits.Accessed   = 0;
+  Pnle->Bits.MustBeZero = 0;
 
   //
   // Set the attributes (WT, CD, A) to 0.
-- 
2.31.1.windows.1



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