Exploit that (MemoryBase + MemorySize) always equals LowerMemorySize.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
---
OvmfPkg/PlatformPei/MemDetect.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 9145ebb..7192b2b 100644
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -161,11 +161,10 @@ MemDetect (
//
// Create memory HOBs
//
- AddMemoryBaseSizeHob (MemoryBase, MemorySize);
- AddMemoryRangeHob (BASE_1MB, MemoryBase);
+ AddMemoryRangeHob (BASE_1MB, LowerMemorySize);
AddMemoryRangeHob (0, BASE_512KB + BASE_128KB);
- MtrrSetMemoryAttribute (BASE_1MB, MemoryBase + MemorySize - BASE_1MB,
CacheWriteBack);
+ MtrrSetMemoryAttribute (BASE_1MB, LowerMemorySize - BASE_1MB,
CacheWriteBack);
MtrrSetMemoryAttribute (0, BASE_512KB + BASE_128KB, CacheWriteBack);
@@ -175,6 +174,6 @@ MemDetect (
MtrrSetMemoryAttribute (BASE_4GB, UpperMemorySize, CacheWriteBack);
}
- return MemoryBase + MemorySize;
+ return LowerMemorySize;
}
--
1.8.3.1
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