diff --git a/include/x86/vmx.h b/include/x86/vmx.h
index a54219e..2494cb8 100644
--- a/include/x86/vmx.h
+++ b/include/x86/vmx.h
@@ -20,6 +20,12 @@
 #define HOST_GS_SELECTOR 0x0C0A
 #define HOST_TR_SELECTOR 0x0C0C
 
+#define IO_BITMAP_ADDRESS_A       0x2000
+#define IO_BITMAP_ADDRESS_B       0x2002
+#define MSR_BITMAP_ADDRESS        0x2004
+#define VM_EXIT_MSR_STORE_ADDRESS 0x2006
+#define VM_EXIT_MSR_LOAD_ADDRESS  0x2008
+
 #define VMCS_LINK_POINTER   0x2800
 #define GUEST_IA32_DEBUGCTL 0x2802
 #define GUEST_IA32_PAT      0x2804
diff --git a/src/vintel.c b/src/vintel.c
index 30127aa..69fadbe 100644
--- a/src/vintel.c
+++ b/src/vintel.c
@@ -207,8 +207,12 @@ vintel_init_host(void)
 	// Set GDT and IDT
 	checked_vmwrite(HOST_GDTR_BASE, (uintptr_t)pv->host_gdtr.base);
 	checked_vmwrite(HOST_IDTR_BASE, (uintptr_t)pv->host_idtr.base);
+	checked_vmwrite(HOST_FS_BASE, 0);
+	checked_vmwrite(HOST_GS_BASE, 0);
+	checked_vmwrite(HOST_TR_BASE, 0); // TODO proper value
 
 	// Dummy sysenter & sysexit values
+	checked_vmwrite(HOST_SYSENTER_CS, 0x08);
 	checked_vmwrite(HOST_SYSENTER_ESP, 0x4000);
 	checked_vmwrite(HOST_SYSENTER_EIP, 0x4000);
 }
@@ -275,6 +279,12 @@ vintel_enable(void)
 		checked_vmwrite(VM_EXIT_CONTROLS, exitControls);
 		AsciiPrint("VM_EXIT_CONTROLS: %lx\n", exitControls);
 
+		checked_vmwrite(IO_BITMAP_ADDRESS_A, 0);
+		checked_vmwrite(IO_BITMAP_ADDRESS_B, 0);
+		checked_vmwrite(MSR_BITMAP_ADDRESS, 0);
+		checked_vmwrite(VM_EXIT_MSR_STORE_ADDRESS, 0);
+		checked_vmwrite(VM_EXIT_MSR_LOAD_ADDRESS, 0);
+
 		checked_vmwrite(VM_ENTRY_MSR_LOAD_COUNT, 0);
 		checked_vmwrite(VM_ENTRY_INTR_INFO_FIELD, 0);
 		checked_vmwrite(VM_EXIT_MSR_STORE_COUNT, 0);