UefiCpuPkg: Move MigrateGdt from DiscoverMemory to TempRamDone. (CVE-2019-11098)

[mirror_edk2.git] / UefiCpuPkg / CpuMpPei / CpuMpPei.c

diff --git a/UefiCpuPkg/CpuMpPei/CpuMpPei.c b/UefiCpuPkg/CpuMpPei/CpuMpPei.c
index 40729a09b9eec651c7ea2c2632ec9f0e34e4917a..3c1bad64701d43c601936b37c6b0556fd959c87f 100644 (file)
--- a/UefiCpuPkg/CpuMpPei/CpuMpPei.c
+++ b/UefiCpuPkg/CpuMpPei/CpuMpPei.c
@@ -429,43 +429,6 @@ GetGdtr (
   AsmReadGdtr ((IA32_DESCRIPTOR *)Buffer);\r
 }\r
 \r
-/**\r
-  Migrates the Global Descriptor Table (GDT) to permanent memory.\r
-\r
-  @retval   EFI_SUCCESS           The GDT was migrated successfully.\r
-  @retval   EFI_OUT_OF_RESOURCES  The GDT could not be migrated due to lack of available memory.\r
-\r
-**/\r
-EFI_STATUS\r
-MigrateGdt (\r
-  VOID\r
-  )\r
-{\r
-  EFI_STATUS          Status;\r
-  UINTN               GdtBufferSize;\r
-  IA32_DESCRIPTOR     Gdtr;\r
-  VOID                *GdtBuffer;\r
-\r
-  AsmReadGdtr ((IA32_DESCRIPTOR *) &Gdtr);\r
-  GdtBufferSize = sizeof (IA32_SEGMENT_DESCRIPTOR) -1 + Gdtr.Limit + 1;\r
-\r
-  Status =  PeiServicesAllocatePool (\r
-              GdtBufferSize,\r
-              &GdtBuffer\r
-              );\r
-  ASSERT (GdtBuffer != NULL);\r
-  if (EFI_ERROR (Status)) {\r
-    return EFI_OUT_OF_RESOURCES;\r
-  }\r
-\r
-  GdtBuffer = ALIGN_POINTER (GdtBuffer, sizeof (IA32_SEGMENT_DESCRIPTOR));\r
-  CopyMem (GdtBuffer, (VOID *) Gdtr.Base, Gdtr.Limit + 1);\r
-  Gdtr.Base = (UINTN) GdtBuffer;\r
-  AsmWriteGdtr (&Gdtr);\r
-\r
-  return EFI_SUCCESS;\r
-}\r
-\r
 /**\r
   Initializes CPU exceptions handlers for the sake of stack switch requirement.\r
 \r