diff --git a/sdk/xtdk/amd64/ketypes.h b/sdk/xtdk/amd64/ketypes.h
index 4618b04..08e616f 100644
--- a/sdk/xtdk/amd64/ketypes.h
+++ b/sdk/xtdk/amd64/ketypes.h
@@ -526,8 +526,13 @@ typedef struct _KPROCESSOR_BLOCK
     PKIDTENTRY IdtBase;
     KRUNLEVEL RunLevel;
     KPROCESSOR_CONTROL_BLOCK Prcb;
+    ULONG Irr;
+    ULONG IrrActive;
+    ULONG Idr;
     ULONG ContextSwitches;
+    KAFFINITY SetMember;
     ULONG StallScaleFactor;
+    UCHAR CpuNumber;
 } KPROCESSOR_BLOCK, *PKPROCESSOR_BLOCK;
 
 /* Thread Environment Block (TEB) structure definition */
diff --git a/sdk/xtdk/i686/ketypes.h b/sdk/xtdk/i686/ketypes.h
index 602c831..98cf3f1 100644
--- a/sdk/xtdk/i686/ketypes.h
+++ b/sdk/xtdk/i686/ketypes.h
@@ -470,16 +470,27 @@ typedef struct _KPROCESSOR_CONTROL_BLOCK
 /* Processor Block structure definition */
 typedef struct _KPROCESSOR_BLOCK
 {
-    THREAD_INFORMATION_BLOCK ThreadInformationBlock;
-    PKPROCESSOR_BLOCK Self;
-    PKPROCESSOR_CONTROL_BLOCK CurrentPrcb;
-    KRUNLEVEL RunLevel;
+    union
+    {
+        THREAD_INFORMATION_BLOCK ThreadInformationBlock;
+        struct
+        {
+            PKGDTENTRY GdtBase;
+            PKTSS TssBase;
+            PKPROCESSOR_BLOCK Self;
+            PKPROCESSOR_CONTROL_BLOCK CurrentPrcb;
+        };
+    };
     PKIDTENTRY IdtBase;
-    PKGDTENTRY GdtBase;
-    PKTSS TssBase;
+    KRUNLEVEL RunLevel;
     KPROCESSOR_CONTROL_BLOCK Prcb;
+    ULONG Irr;
+    ULONG IrrActive;
+    ULONG Idr;
     ULONG ContextSwitches;
+    KAFFINITY SetMember;
     ULONG StallScaleFactor;
+    UCHAR CpuNumber;
 } KPROCESSOR_BLOCK, *PKPROCESSOR_BLOCK;
 
 /* Thread Environment Block (TEB) structure definition */