diff --git a/.bintray_descriptor.json b/.bintray_descriptor.json
index 5d244a4f7..ff3e91669 100644
--- a/.bintray_descriptor.json
+++ b/.bintray_descriptor.json
@@ -13,7 +13,7 @@
     },
 
     "version": {
-        "name": "0.2.1",
+        "name": "0.2.2",
         "desc": "HermitCore's kernel as libOS",
         "gpgSign": false
     },
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 65cdc03cd..7383b462b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -199,7 +199,7 @@ set(CPACK_SYSTEM_NAME all)
 
 set(CPACK_PACKAGE_VERSION_MAJOR 0)
 set(CPACK_PACKAGE_VERSION_MINOR 2)
-set(CPACK_PACKAGE_VERSION_PATCH 1)
+set(CPACK_PACKAGE_VERSION_PATCH 2)
 
 set(CPACK_PACKAGE_CONTACT "Stefan Lankes <slankes@eonerc.rwth-aachen.de>")
 
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 1192490b8..f75d7fff7 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -905,12 +905,7 @@ extern int set_idle_task(void);
 #if MAX_CORES > 1
 int smp_start(void)
 {
-	x2apic_enable();
-
-	// reset APIC and set id
-	lapic_reset();
-
-	LOG_DEBUG("Processor %d (local id %d) is entering its idle task\n", apic_cpu_id(), atomic_int32_read(&current_boot_id));
+	LOG_DEBUG("Try to initialize processor (local id %d)\n", atomic_int32_read(&current_boot_id));
 
 	// use the same gdt like the boot processors
 	gdt_flush();
@@ -921,6 +916,12 @@ int smp_start(void)
 	// enable additional cpu features
 	cpu_detection();
 
+	x2apic_enable();
+
+	// reset APIC
+	lapic_reset();
+
+	LOG_DEBUG("Processor %d (local id %d) is entering its idle task\n", apic_cpu_id(), atomic_int32_read(&current_boot_id));
 	LOG_DEBUG("CR0 of core %u: 0x%x\n", atomic_int32_read(&current_boot_id), read_cr0());
 	online[atomic_int32_read(&current_boot_id)] = 1;
 
diff --git a/arch/x86/kernel/entry.asm b/arch/x86/kernel/entry.asm
index a4c68e835..6375533da 100644
--- a/arch/x86/kernel/entry.asm
+++ b/arch/x86/kernel/entry.asm
@@ -202,9 +202,9 @@ Lremap:
     add rdi, 8
     ; note: the whole code segement has to fit in the first pgd
     cmp rcx, rsi
-    jnb Lno_pml4_init
+    jnl Lno_pml4_init
     cmp rcx, r11
-    jb Lremap
+    jl Lremap
 
 Lno_pml4_init:
     ; Set CR3
@@ -416,7 +416,6 @@ extern irq_handler
 extern get_current_stack
 extern finish_task_switch
 extern syscall_handler
-extern kernel_stack
 
 global getcontext
 align 64
diff --git a/arch/x86/kernel/tasks.c b/arch/x86/kernel/tasks.c
index 81d38aeca..4a3a89045 100644
--- a/arch/x86/kernel/tasks.c
+++ b/arch/x86/kernel/tasks.c
@@ -126,7 +126,6 @@ size_t* get_current_stack(void)
 	else
 		stptr = (stptr + DEFAULT_STACK_SIZE - sizeof(size_t)) & ~0x1F;
 
-	set_per_core(kernel_stack, stptr);
 	set_tss(stptr, (size_t) curr_task->ist_addr + KERNEL_STACK_SIZE - 0x10);
 
 	return curr_task->last_stack_pointer;
@@ -193,9 +192,11 @@ int create_default_frame(task_t* task, entry_point_t ep, void* arg, uint32_t cor
 	return 0;
 }
 
+#define USE_MWAIT
+
 void wait_for_task(void)
 {
-#if 1
+#ifndef USE_MWAIT
 	HALT;
 #else
 	if (!has_mwait()) {
@@ -214,7 +215,7 @@ void wait_for_task(void)
 
 void wakeup_core(uint32_t core_id)
 {
-#if 0
+#ifdef USE_MWAIT
 	// if mwait is available, an IPI isn't required to wakeup the core
 	if (has_mwait())
 		return;
diff --git a/cmake/HermitCore-Configuration.cmake b/cmake/HermitCore-Configuration.cmake
index bd5753eef..c38566f8c 100644
--- a/cmake/HermitCore-Configuration.cmake
+++ b/cmake/HermitCore-Configuration.cmake
@@ -1,4 +1,4 @@
-set(PACKAGE_VERSION "0.2.1" CACHE STRING
+set(PACKAGE_VERSION "0.2.2" CACHE STRING
 	"HermitCore current version")
 
 set(MAX_CORES "512" CACHE STRING
diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index c460f96f6..330c16f5c 100644
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -45,6 +45,8 @@
 #include <netif/etharp.h>
 #include <net/e1000.h>
 
+#if USE_E1000
+
 #define RX_BUF_LEN      (2048)
 #define TX_BUF_LEN      (1792)
 
@@ -603,3 +605,5 @@ oom:
 
 	return ERR_MEM;
 }
+
+#endif
diff --git a/drivers/net/e1000.h b/drivers/net/e1000.h
index 08f0d886f..49ade1225 100644
--- a/drivers/net/e1000.h
+++ b/drivers/net/e1000.h
@@ -32,6 +32,8 @@
 #include <hermit/stddef.h>
 #include <hermit/spinlock.h>
 
+#ifdef USE_E1000
+
 #define NUM_RX_DESCRIPTORS	64
 #define NUM_TX_DESCRIPTORS	64
 
@@ -324,3 +326,5 @@ typedef struct e1000if {
 err_t e1000if_init(struct netif* netif);
 
 #endif
+
+#endif
diff --git a/include/hermit/stddef.h b/include/hermit/stddef.h
index 5b1531cbb..818ad5fc8 100644
--- a/include/hermit/stddef.h
+++ b/include/hermit/stddef.h
@@ -83,9 +83,6 @@ typedef unsigned int tid_t;
 struct task;
 DECLARE_PER_CORE(struct task*, current_task);
 
-/* allows fast access to the kernel stack */
-DECLARE_PER_CORE(char*, kernel_stack);
-
 #if MAX_CORES > 1
 /* allows fast access to the core id */
 DECLARE_PER_CORE(uint32_t, __core_id);
diff --git a/kernel/main.c b/kernel/main.c
index d2fe61327..b5c0bf214 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -206,8 +206,10 @@ static int init_netifs(void)
 			goto success;
 		if ((err = netifapi_netif_add(&default_netif, ip_2_ip4(&ipaddr), ip_2_ip4(&netmask), ip_2_ip4(&gw), NULL, rtl8139if_init, ethernet_input)) == ERR_OK)
 			goto success;
+#ifdef USE_E1000
 		if ((err = netifapi_netif_add(&default_netif, ip_2_ip4(&ipaddr), ip_2_ip4(&netmask), ip_2_ip4(&gw), NULL, e1000if_init, ethernet_input)) == ERR_OK)
 			goto success;
+#endif
 
 		LOG_ERROR("Unable to add the network interface: err = %d\n", err);
 
diff --git a/kernel/tasks.c b/kernel/tasks.c
index 47655cb0d..f886fc0a2 100644
--- a/kernel/tasks.c
+++ b/kernel/tasks.c
@@ -67,7 +67,6 @@ static readyqueues_t readyqueues[1] = {[0] = {task_table+0, NULL, 0, 0, 0, {[0 .
 #endif
 
 DEFINE_PER_CORE(task_t*, current_task, task_table+0);
-DEFINE_PER_CORE(char*, kernel_stack, NULL);
 
 #if MAX_CORES > 1
 DEFINE_PER_CORE(uint32_t, __core_id, 0);
@@ -282,7 +281,6 @@ int multitasking_init(void)
 	task_table[0].prio = IDLE_PRIO;
 	task_table[0].stack = (char*) ((size_t)&boot_stack + core_id * KERNEL_STACK_SIZE);
 	task_table[0].ist_addr = (char*)&boot_ist;
-	set_per_core(kernel_stack, task_table[0].stack + KERNEL_STACK_SIZE - 0x10);
 	set_per_core(current_task, task_table+0);
 	arch_init_task(task_table+0);
 
@@ -307,7 +305,6 @@ int set_idle_task(void)
 			task_table[i].last_stack_pointer = NULL;
 			task_table[i].stack = (char*) ((size_t)&boot_stack + core_id * KERNEL_STACK_SIZE);
 			task_table[i].ist_addr = create_stack(KERNEL_STACK_SIZE);
-			set_per_core(kernel_stack, task_table[i].stack + KERNEL_STACK_SIZE - 0x10);
 			task_table[i].prio = IDLE_PRIO;
 			task_table[i].heap = NULL;
 			readyqueues[core_id].idle = task_table+i;
diff --git a/lwip b/lwip
index 51d48fe0c..c21d911aa 160000
--- a/lwip
+++ b/lwip
@@ -1 +1 @@
-Subproject commit 51d48fe0c67131da346c9ef280b2019c77f6e607
+Subproject commit c21d911aa4f178563dc102f595d1d97dd8471458
diff --git a/tests.sh b/tests.sh
index 3cabbadbe..a4e8f0639 100755
--- a/tests.sh
+++ b/tests.sh
@@ -9,6 +9,8 @@ PROXY=build/local_prefix/opt/hermit/bin/proxy
 
 for f in $FILES; do echo "check $f..."; HERMIT_ISLE=qemu HERMIT_CPUS=1 HERMIT_KVM=0 HERMIT_VERBOSE=1 timeout --kill-after=5m 5m $PROXY $f || exit 1; done
 
+for f in $FILES; do echo "check $f..."; HERMIT_ISLE=qemu HERMIT_CPUS=2 HERMIT_KVM=0 HERMIT_VERBOSE=1 timeout --kill-after=5m 5m $PROXY $f || exit 1; done
+
 # test echo server at port 8000
 HERMIT_ISLE=qemu HERMIT_CPUS=1 HERMIT_KVM=0 HERMIT_VERBOSE=1 HERMIT_APP_PORT=8000 $PROXY $TDIR/tests/server &
 sleep 10
diff --git a/tools/proxy.c b/tools/proxy.c
index d36d01cdc..8c5adf472 100644
--- a/tools/proxy.c
+++ b/tools/proxy.c
@@ -522,7 +522,7 @@ static int multi_init(char *path)
 	free(result);
 
 	// wait until HermitCore is sucessfully booted
-	wait_hermit_available();
+	//wait_hermit_available();
 
 	return 0;
 }