diff --git a/repos/base-nova/include/nova/syscall-generic.h b/repos/base-nova/include/nova/syscall-generic.h
index 4f25b22e7b..5a0cb5770f 100644
--- a/repos/base-nova/include/nova/syscall-generic.h
+++ b/repos/base-nova/include/nova/syscall-generic.h
@@ -73,6 +73,9 @@ namespace Nova {
 		NOVA_CREATE_CELL= 0x14,
 		NOVA_CELL_CTRL  = 0x15,
 		NOVA_CONS_CTRL  = 0x16,
+		NOVA_CPUID		= 0x17,
+		NOVA_RESERVE_CPU= 0x18,
+		NOVA_CREATE_HAB = 0x19,
 	};
 
 	/**
@@ -591,7 +594,7 @@ namespace Nova {
 
 		public:
 
-			enum { DEFAULT_QUANTUM = 1500, DEFAULT_PRIORITY = 64 };
+			enum { DEFAULT_QUANTUM = 10000, DEFAULT_PRIORITY = 64 };
 
 			Qpd(mword_t quantum  = DEFAULT_QUANTUM,
 			    mword_t priority = DEFAULT_PRIORITY)
diff --git a/repos/base-nova/include/spec/64bit/nova/syscalls.h b/repos/base-nova/include/spec/64bit/nova/syscalls.h
index dfb1892a79..3ddc692e6f 100644
--- a/repos/base-nova/include/spec/64bit/nova/syscalls.h
+++ b/repos/base-nova/include/spec/64bit/nova/syscalls.h
@@ -155,7 +155,7 @@ namespace Nova {
 	ALWAYS_INLINE
 	inline uint8_t call(mword_t pt)
 	{
-		return syscall_1(NOVA_CALL, 0, pt, 0);
+		return syscall_1(NOVA_CALL, 0, 0, pt);
 	}
 
 
@@ -441,9 +441,10 @@ namespace Nova {
 	}
 
 	ALWAYS_INLINE
-	inline uint8_t yield(bool release_core = true)
+	inline uint8_t yield(bool release_core = true, bool block = true)
 	{
-		return syscall_0(NOVA_YIELD, release_core, 0);
+		Nova::uint8_t flags = block ? release_core : 3;
+		return syscall_0(NOVA_YIELD, flags, 0);
 	}
 
 	ALWAYS_INLINE
@@ -453,15 +454,27 @@ namespace Nova {
 	}
 
 	ALWAYS_INLINE
-	inline uint8_t alloc_cores(mword_t count)
+	inline uint8_t alloc_cores(mword_t count, mword_t &allocated)
 	{
-		return syscall_1(NOVA_ALLOC_CORES, 0, 0, count);
+		return syscall_5(NOVA_ALLOC_CORES, 0, 0, count, allocated);
 	}
 
 	ALWAYS_INLINE
-	inline uint8_t core_allocation(mword_t &allocation)
+	inline uint8_t wake_core(mword_t core)
 	{
-		return syscall_5(NOVA_CORE_ALLOC, 0, 0, allocation, allocation);
+		return syscall_1(NOVA_RESERVE_CPU, 0, 0, core);
+	}
+
+	ALWAYS_INLINE
+	inline uint8_t core_allocation(mword_t &allocation, bool mask = false)
+	{
+		return syscall_5(NOVA_CORE_ALLOC, static_cast<Nova::uint8_t>(mask), 0, allocation, allocation);
+	}
+
+	ALWAYS_INLINE
+	inline uint8_t cpu_id(mword_t &cpuid)
+	{
+		return syscall_5(NOVA_CPUID, 0, 0, cpuid, cpuid);
 	}
 
 	ALWAYS_INLINE
@@ -476,6 +489,12 @@ namespace Nova {
 		return syscall_2(NOVA_CELL_CTRL, Cell_op::GROW, pd, mask, index);
 	}
 
+	ALWAYS_INLINE
+	inline uint8_t create_habitat(mword_t start_cpu, mword_t size)
+	{
+		return syscall_2(NOVA_CREATE_HAB, 0, 0, start_cpu, size);
+	}
+
 	ALWAYS_INLINE
 	inline uint8_t acquire_console()
 	{