diff --git a/sdk/xtdk/ketypes.h b/sdk/xtdk/ketypes.h
index 9bc7d2f..8b63870 100644
--- a/sdk/xtdk/ketypes.h
+++ b/sdk/xtdk/ketypes.h
@@ -39,6 +39,10 @@
 #define KTIMER_WAIT_BLOCK                           3
 #define SEMAPHORE_WAIT_BLOCK                        2
 
+/* Quantum values */
+#define READY_SKIP_QUANTUM                          2
+#define THREAD_QUANTUM                              6
+
 /* Adjust reason */
 typedef enum _ADJUST_REASON
 {
@@ -96,6 +100,17 @@ typedef enum _KOBJECTS
     MaximumKernelObject = 25
 } KOBJECTS, *PKOBJECTS;
 
+/* Process states */
+typedef enum _KPROCESS_STATE
+{
+    ProcessInMemory,
+    ProcessOutOfMemory,
+    ProcessInTransition,
+    ProcessOutTransition,
+    ProcessInSwap,
+    ProcessOutSwap
+} KPROCESS_STATE, *PKPROCESS_STATE;
+
 /* Thread state */
 typedef enum _KTHREAD_STATE
 {
@@ -252,6 +267,13 @@ typedef struct _KWAIT_BLOCK
 /* Process control block structure definition */
 typedef struct _KPROCESS
 {
+    DISPATCHER_HEADER Header;
+    LIST_ENTRY ProfileListHead;
+    ULONG_PTR DirectoryTable[2];
+    USHORT IopmOffset;
+    LIST_ENTRY ReadyListHead;
+    LIST_ENTRY ThreadListHead;
+    KAFFINITY Affinity;
     union
     {
         struct
@@ -263,6 +285,10 @@ typedef struct _KPROCESS
         };
         LONG ProcessFlags;
     };
+    SCHAR BasePriority;
+    SCHAR Quantum;
+    UCHAR State;
+    ULONG_PTR StackCount;
 } KPROCESS, *PKPROCESS;
 
 /* Thread control block structure definition */
diff --git a/sdk/xtdk/xtbase.h b/sdk/xtdk/xtbase.h
index 13f9a64..d733cc1 100644
--- a/sdk/xtdk/xtbase.h
+++ b/sdk/xtdk/xtbase.h
@@ -14,6 +14,9 @@
 #include <xttypes.h>
 
 
+/* Kernel affinity */
+typedef ULONG_PTR KAFFINITY, *PKAFFINITY;
+
 /* Interrupt Request Level (IRQL) */
 typedef UCHAR KIRQL, *PKIRQL;
 
diff --git a/sdk/xtdk/xtdefs.h b/sdk/xtdk/xtdefs.h
index 1559748..d29a1c5 100644
--- a/sdk/xtdk/xtdefs.h
+++ b/sdk/xtdk/xtdefs.h
@@ -30,6 +30,14 @@
 #define NULL                                   ((PVOID) 0)
 #define NULL64                                 ((VOID * PVOID) 0)
 
+/* Type limits */
+#define MINCHAR                                0x80
+#define MAXCHAR                                0x7F
+#define MINSHORT                               0x8000
+#define MAXSHORT                               0x7FFF
+#define MINLONG                                0x80000000
+#define MAXLONG                                0x7FFFFFFF
+
 /* Preprocessor macros for defining a structure alignment and packing */
 #define ALIGN(x)                               __attribute__((aligned(x)))
 #define PACK                                   __attribute__((packed))
diff --git a/sdk/xtdk/xtstruct.h b/sdk/xtdk/xtstruct.h
index 820f6c6..88f59ba 100644
--- a/sdk/xtdk/xtstruct.h
+++ b/sdk/xtdk/xtstruct.h
@@ -40,6 +40,7 @@ typedef enum _EFI_UART_STOP_BITS_TYPE EFI_UART_STOP_BITS_TYPE, *PEFI_UART_STOP_B
 typedef enum _EFI_UNIVERSA_GRAPHICS_BLT_OPERATION EFI_UNIVERSA_GRAPHICS_BLT_OPERATION, *PEFI_UNIVERSA_GRAPHICS_BLT_OPERATION;
 typedef enum _KAPC_ENVIRONMENT KAPC_ENVIRONMENT, *PKAPC_ENVIRONMENT;
 typedef enum _KOBJECTS KOBJECTS, *PKOBJECTS;
+typedef enum _KPROCESS_STATE KPROCESS_STATE, *PKPROCESS_STATE;
 typedef enum _KTHREAD_STATE KTHREAD_STATE, *PKTHREAD_STATE;
 typedef enum _KTIMER_TYPE KTIMER_TYPE, *PKTIMER_TYPE;
 typedef enum _LOADER_MEMORY_TYPE LOADER_MEMORY_TYPE, *PLOADER_MEMORY_TYPE;
diff --git a/xtoskrnl/CMakeLists.txt b/xtoskrnl/CMakeLists.txt
index a6ffad3..1927736 100644
--- a/xtoskrnl/CMakeLists.txt
+++ b/xtoskrnl/CMakeLists.txt
@@ -18,6 +18,7 @@ list(APPEND XTOSKRNL_SOURCE
     ${XTOSKRNL_SOURCE_DIR}/hl/${ARCH}/ioport.c
     ${XTOSKRNL_SOURCE_DIR}/ke/apc.c
     ${XTOSKRNL_SOURCE_DIR}/ke/globals.c
+    ${XTOSKRNL_SOURCE_DIR}/ke/kprocess.c
     ${XTOSKRNL_SOURCE_DIR}/ke/krnlinit.c
     ${XTOSKRNL_SOURCE_DIR}/ke/kthread.c
     ${XTOSKRNL_SOURCE_DIR}/ke/semphore.c
diff --git a/xtoskrnl/includes/kepfuncs.h b/xtoskrnl/includes/kepfuncs.h
index b090ea3..5820991 100644
--- a/xtoskrnl/includes/kepfuncs.h
+++ b/xtoskrnl/includes/kepfuncs.h
@@ -12,6 +12,14 @@
 #include <xtos.h>
 
 
+XTAPI
+VOID
+KeInitializeProcess(IN OUT PKPROCESS Process,
+                    IN KPRIORITY Priority,
+                    IN KAFFINITY Affinity,
+                    IN PULONG_PTR DirectoryTable,
+                    IN BOOLEAN Alignment);
+
 XTAPI
 XTSTATUS
 KeInitializeThread(IN PKTHREAD Thread,
diff --git a/xtoskrnl/ke/kprocess.c b/xtoskrnl/ke/kprocess.c
new file mode 100644
index 0000000..30a6d41
--- /dev/null
+++ b/xtoskrnl/ke/kprocess.c
@@ -0,0 +1,69 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/ke/kprocess.c
+ * DESCRIPTION:     XT kernel process manipulation support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/**
+ * Initializes the process.
+ *
+ * @param Process
+ *        Supplies a pointer to process that will be initialized.
+ *
+ * @param Priority
+ *        Specifies the process priority.
+ *
+ * @param Affinity
+ *        Specifies a process affinity designating processors on which process can run.
+ *
+ * @param DirectoryTable
+ *        Supplies a pointer to the directory table.
+ *
+ * @param Alignment
+ *        Specifies the exceptions alignment of the process.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+VOID
+KeInitializeProcess(IN OUT PKPROCESS Process,
+                    IN KPRIORITY Priority,
+                    IN KAFFINITY Affinity,
+                    IN PULONG_PTR DirectoryTable,
+                    IN BOOLEAN Alignment)
+{
+    /* Initialize process dispatcher header */
+    Process->Header.Type = ProcessObject;
+
+    /* Initialize process wait list */
+    RtlInitializeListHead(&Process->Header.WaitListHead);
+
+    /* Initialize process list heads */
+    RtlInitializeListHead(&Process->ProfileListHead);
+    RtlInitializeListHead(&Process->ReadyListHead);
+    RtlInitializeListHead(&Process->ThreadListHead);
+
+    /* Set base process properties */
+    Process->BasePriority = Priority;
+    Process->Affinity = Affinity;
+    Process->AutoAlignment = Alignment;
+    Process->DirectoryTable[0] = DirectoryTable[0];
+    Process->DirectoryTable[1] = DirectoryTable[1];
+    Process->StackCount = MAXSHORT;
+
+    /* Set thread quantum */
+    Process->Quantum = THREAD_QUANTUM;
+
+    /* Set IOPM offset */
+    Process->IopmOffset = sizeof(KTSS);
+
+    /* Set initial process state */
+    Process->State = ProcessInMemory;
+}