X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdePkg%2FInclude%2FIndustryStandard%2FAcpi20.h;h=4476bf9f22d469abde3b322417cb6fd5eb1b4fa6;hb=4f1afaacb283542ee1fdf14602c5d2f44a79de5c;hp=b67ee54440cd89f507b29ddf61999ddd22865149;hpb=55c11cc8923b1f76c6d47769fe56f3fa8730e326;p=mirror_edk2.git

diff --git a/MdePkg/Include/IndustryStandard/Acpi20.h b/MdePkg/Include/IndustryStandard/Acpi20.h
index b67ee54440..4476bf9f22 100644
--- a/MdePkg/Include/IndustryStandard/Acpi20.h
+++ b/MdePkg/Include/IndustryStandard/Acpi20.h
@@ -99,6 +99,10 @@ typedef struct {
 ///
 #define EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_REVISION 0x01
 
+//           
+// Ensure proper structure formats
+//           
+#pragma pack(1)
 ///
 /// Fixed ACPI Description Table Structure (FADT)
 ///
@@ -156,6 +160,7 @@ typedef struct {
   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XGpe0Blk;
   EFI_ACPI_2_0_GENERIC_ADDRESS_STRUCTURE  XGpe1Blk;
 } EFI_ACPI_2_0_FIXED_ACPI_DESCRIPTION_TABLE;
+#pragma pack()
 
 ///
 /// FADT Version (as defined in ACPI 2.0 spec.)