Tested-by: Liming Gao <[email protected]>
Reviewed-by: Liming Gao <[email protected]>

-----Original Message-----
From: Tom Lendacky <[email protected]> 
Sent: 2020年8月18日 21:10
To: [email protected]
Cc: Gao, Liming <[email protected]>; Dong, Eric <[email protected]>; Ni, 
Ray <[email protected]>; Laszlo Ersek <[email protected]>; Kumar, Rahul1 
<[email protected]>
Subject: [PATCH 1/1] UefiCpuPkg/MpInitLib: Always initialize the DoDecrement 
variable

From: Tom Lendacky <[email protected]>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2901

The DoDecrement variable in ApWakeupFunction () wasn't always being 
initialized. Update the code to always fully initialize it.

Cc: Eric Dong <[email protected]>
Cc: Ray Ni <[email protected]>
Cc: Laszlo Ersek <[email protected]>
Cc: Rahul Kumar <[email protected]>
Signed-off-by: Tom Lendacky <[email protected]>
---
 UefiCpuPkg/Library/MpInitLib/MpLib.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c 
b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 90416c81b616..e24bdc64f930 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -885,9 +885,7 @@ ApWakeupFunction (
           UINT64                    Status;
           BOOLEAN                   DoDecrement;
 
-          if (CpuMpData->InitFlag == ApInitConfig) {
-            DoDecrement = TRUE;
-          }
+          DoDecrement = (CpuMpData->InitFlag == ApInitConfig) ? TRUE : 
+ FALSE;
 
           while (TRUE) {
             Msr.GhcbPhysicalAddress = AsmReadMsr64 (MSR_SEV_ES_GHCB);
--
2.28.0


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