[edk2-devel] [Patch V5 12/14] UefiCpuPkg: Sort mProtectionMemRange when ReadyToLock
duntan
dun.tan at intel.com
Thu Jun 8 02:27:40 UTC 2023
Sort mProtectionMemRange in InitProtectedMemRange() when
ReadyToLock.
Signed-off-by: Dun Tan <dun.tan at intel.com>
Cc: Eric Dong <eric.dong at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Rahul Kumar <rahul1.kumar at intel.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
---
UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c
index 5625ba0cac..2a1f132b29 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c
@@ -375,6 +375,32 @@ IsAddressSplit (
return FALSE;
}
+/**
+ Function to compare 2 MEMORY_PROTECTION_RANGE based on range base.
+
+ @param[in] Buffer1 pointer to Device Path poiner to compare
+ @param[in] Buffer2 pointer to second DevicePath pointer to compare
+
+ @retval 0 Buffer1 equal to Buffer2
+ @retval <0 Buffer1 is less than Buffer2
+ @retval >0 Buffer1 is greater than Buffer2
+**/
+INTN
+EFIAPI
+ProtectionRangeCompare (
+ IN CONST VOID *Buffer1,
+ IN CONST VOID *Buffer2
+ )
+{
+ if (((MEMORY_PROTECTION_RANGE *)Buffer1)->Range.Base > ((MEMORY_PROTECTION_RANGE *)Buffer2)->Range.Base) {
+ return 1;
+ } else if (((MEMORY_PROTECTION_RANGE *)Buffer1)->Range.Base < ((MEMORY_PROTECTION_RANGE *)Buffer2)->Range.Base) {
+ return -1;
+ }
+
+ return 0;
+}
+
/**
Initialize the protected memory ranges and the 4KB-page mapped memory ranges.
@@ -397,6 +423,7 @@ InitProtectedMemRange (
EFI_PHYSICAL_ADDRESS Base2MBAlignedAddress;
UINT64 High4KBPageSize;
UINT64 Low4KBPageSize;
+ MEMORY_PROTECTION_RANGE MemProtectionRange;
NumberOfDescriptors = 0;
NumberOfAddedDescriptors = mSmmCpuSmramRangeCount;
@@ -533,6 +560,11 @@ InitProtectedMemRange (
mSplitMemRangeCount = NumberOfSpliteRange;
+ //
+ // Sort the mProtectionMemRange
+ //
+ QuickSort (mProtectionMemRange, mProtectionMemRangeCount, sizeof (MEMORY_PROTECTION_RANGE), (BASE_SORT_COMPARE)ProtectionRangeCompare, &MemProtectionRange);
+
DEBUG ((DEBUG_INFO, "SMM Profile Memory Ranges:\n"));
for (Index = 0; Index < mProtectionMemRangeCount; Index++) {
DEBUG ((DEBUG_INFO, "mProtectionMemRange[%d].Base = %lx\n", Index, mProtectionMemRange[Index].Range.Base));
--
2.31.1.windows.1
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