diff --git a/src/include/syscalls.h b/src/include/syscalls.h
index bfedf35..5e5c46b 100644
--- a/src/include/syscalls.h
+++ b/src/include/syscalls.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 
 typedef enum {
-    SYS_REGISTER_FUNCTION,
-    SYS_REQUEST,
+    SYS_REGISTER_FUNCTION = 1,
+    SYS_REQUEST = 2,
 } SyscallIds;
 
 typedef struct {
@@ -14,6 +14,8 @@
     void *returnAddress;
     void *returnEsp;
     uint32_t cr3;
+    void *respondingTo;
+    void *pageDirectory;
     bool resume;
 } Syscall;
 

diff --git a/src/include/syscalls.h b/src/include/syscalls.h
index bfedf35..5e5c46b 100644
--- a/src/include/syscalls.h
+++ b/src/include/syscalls.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 
 typedef enum {
-    SYS_REGISTER_FUNCTION,
-    SYS_REQUEST,
+    SYS_REGISTER_FUNCTION = 1,
+    SYS_REQUEST = 2,
 } SyscallIds;
 
 typedef struct {
@@ -14,6 +14,8 @@
     void *returnAddress;
     void *returnEsp;
     uint32_t cr3;
+    void *respondingTo;
+    void *pageDirectory;
     bool resume;
 } Syscall;
 
diff --git a/src/kernel/main.c b/src/kernel/main.c
index 350adc8..844c779 100644
--- a/src/kernel/main.c
+++ b/src/kernel/main.c
@@ -21,7 +21,8 @@
 
 Service *findServiceByCR3(uint32_t cr3) {
     foreach (services, Service *, service, {
-        if (service->pagingInfo.pageDirectory == PTR(cr3)) {
+        if (getPhysicalAddressKernel(service->pagingInfo.pageDirectory) ==
+            PTR(cr3)) {
             return service;
         }
     })
@@ -43,6 +44,45 @@
     run(provider->service, provider->address);
 }
 
+void handleInstallSyscall(Syscall *call, Service *service) {
+    Provider *provider = malloc(sizeof(Provider));
+    RegisterServiceProviderSyscall *registerCall = (void *)call;
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(registerCall->pageDirectory, registerCall->name));
+    provider->name = providerName;
+    provider->address = registerCall->handler;
+    provider->service = service;
+    listAdd(&service->providers, provider);
+    call->resume = true;
+    listAdd(&callsToProcess, call);
+}
+
+extern void *runEnd;
+
+void handleRequestSyscall(Syscall *call, Service *service) {
+    RequestSyscall *request = (void *)call;
+    char *serviceName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->service));
+    Service *providerService = findService(serviceName);
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->request));
+    Provider *callProvider = findProvider(providerService, providerName);
+    Syscall *runCall = malloc(sizeof(Syscall));
+    runCall->id = 0;
+    runCall->resume = true;
+    runCall->respondingTo = call;
+    runCall->pageDirectory = providerService->pagingInfo.pageDirectory;
+    runCall->cr3 = U32(getPhysicalAddressKernel(runCall->pageDirectory));
+    runCall->returnEsp = malloc(0x1000);
+    runCall->returnAddress = callProvider->address;
+    runCall->resume = true;
+    sharePage(&providerService->pagingInfo, runCall->returnEsp,
+              runCall->returnEsp);
+    runCall->returnEsp += 0xFFC;
+    *(void **)runCall->returnEsp = runEnd;
+    listAdd(&callsToProcess, runCall);
+}
+
 void kernelMain(void *multibootInfo) {
     setupMemory();
     void *address = kernelMapMultiplePhysicalPages(multibootInfo, 4);
@@ -66,15 +106,12 @@
             continue;
         }
         switch (call->id) {
-        case SYS_REGISTER_FUNCTION:;
-            Provider *provider = malloc(sizeof(Provider));
-            RegisterServiceProviderSyscall *registerCall = (void *)call;
-            provider->name = registerCall->name;
-            provider->address = registerCall->handler;
-            provider->service = service;
-            listAdd(&service->providers, provider);
+        case SYS_REGISTER_FUNCTION:
+            handleInstallSyscall(call, service);
+            break;
+        case SYS_REQUEST:
+            handleRequestSyscall(call, service);
+            break;
         }
-        call->resume = true;
-        listAdd(&callsToProcess, call);
     }
 }

diff --git a/src/include/syscalls.h b/src/include/syscalls.h
index bfedf35..5e5c46b 100644
--- a/src/include/syscalls.h
+++ b/src/include/syscalls.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 
 typedef enum {
-    SYS_REGISTER_FUNCTION,
-    SYS_REQUEST,
+    SYS_REGISTER_FUNCTION = 1,
+    SYS_REQUEST = 2,
 } SyscallIds;
 
 typedef struct {
@@ -14,6 +14,8 @@
     void *returnAddress;
     void *returnEsp;
     uint32_t cr3;
+    void *respondingTo;
+    void *pageDirectory;
     bool resume;
 } Syscall;
 
diff --git a/src/kernel/main.c b/src/kernel/main.c
index 350adc8..844c779 100644
--- a/src/kernel/main.c
+++ b/src/kernel/main.c
@@ -21,7 +21,8 @@
 
 Service *findServiceByCR3(uint32_t cr3) {
     foreach (services, Service *, service, {
-        if (service->pagingInfo.pageDirectory == PTR(cr3)) {
+        if (getPhysicalAddressKernel(service->pagingInfo.pageDirectory) ==
+            PTR(cr3)) {
             return service;
         }
     })
@@ -43,6 +44,45 @@
     run(provider->service, provider->address);
 }
 
+void handleInstallSyscall(Syscall *call, Service *service) {
+    Provider *provider = malloc(sizeof(Provider));
+    RegisterServiceProviderSyscall *registerCall = (void *)call;
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(registerCall->pageDirectory, registerCall->name));
+    provider->name = providerName;
+    provider->address = registerCall->handler;
+    provider->service = service;
+    listAdd(&service->providers, provider);
+    call->resume = true;
+    listAdd(&callsToProcess, call);
+}
+
+extern void *runEnd;
+
+void handleRequestSyscall(Syscall *call, Service *service) {
+    RequestSyscall *request = (void *)call;
+    char *serviceName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->service));
+    Service *providerService = findService(serviceName);
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->request));
+    Provider *callProvider = findProvider(providerService, providerName);
+    Syscall *runCall = malloc(sizeof(Syscall));
+    runCall->id = 0;
+    runCall->resume = true;
+    runCall->respondingTo = call;
+    runCall->pageDirectory = providerService->pagingInfo.pageDirectory;
+    runCall->cr3 = U32(getPhysicalAddressKernel(runCall->pageDirectory));
+    runCall->returnEsp = malloc(0x1000);
+    runCall->returnAddress = callProvider->address;
+    runCall->resume = true;
+    sharePage(&providerService->pagingInfo, runCall->returnEsp,
+              runCall->returnEsp);
+    runCall->returnEsp += 0xFFC;
+    *(void **)runCall->returnEsp = runEnd;
+    listAdd(&callsToProcess, runCall);
+}
+
 void kernelMain(void *multibootInfo) {
     setupMemory();
     void *address = kernelMapMultiplePhysicalPages(multibootInfo, 4);
@@ -66,15 +106,12 @@
             continue;
         }
         switch (call->id) {
-        case SYS_REGISTER_FUNCTION:;
-            Provider *provider = malloc(sizeof(Provider));
-            RegisterServiceProviderSyscall *registerCall = (void *)call;
-            provider->name = registerCall->name;
-            provider->address = registerCall->handler;
-            provider->service = service;
-            listAdd(&service->providers, provider);
+        case SYS_REGISTER_FUNCTION:
+            handleInstallSyscall(call, service);
+            break;
+        case SYS_REQUEST:
+            handleRequestSyscall(call, service);
+            break;
         }
-        call->resume = true;
-        listAdd(&callsToProcess, call);
     }
 }
diff --git a/src/kernel/syscalls/syscall.c b/src/kernel/syscalls/syscall.c
index 93006dc..3a1bf1e 100644
--- a/src/kernel/syscalls/syscall.c
+++ b/src/kernel/syscalls/syscall.c
@@ -20,8 +20,8 @@
     if (!callData) {
         asm("jmp runEndSyscall");
     }
-    void *pageDirectory = mapTemporary(cr3);
-    void *dataPhysical = getPhysicalAddress(pageDirectory, callData);
+    callData->pageDirectory = kernelMapPhysical(cr3);
+    void *dataPhysical = getPhysicalAddress(callData->pageDirectory, callData);
     Syscall *data = kernelMapPhysical(dataPhysical);
     data->cr3 = U32(cr3);
     listAdd(&callsToProcess, data);

diff --git a/src/include/syscalls.h b/src/include/syscalls.h
index bfedf35..5e5c46b 100644
--- a/src/include/syscalls.h
+++ b/src/include/syscalls.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 
 typedef enum {
-    SYS_REGISTER_FUNCTION,
-    SYS_REQUEST,
+    SYS_REGISTER_FUNCTION = 1,
+    SYS_REQUEST = 2,
 } SyscallIds;
 
 typedef struct {
@@ -14,6 +14,8 @@
     void *returnAddress;
     void *returnEsp;
     uint32_t cr3;
+    void *respondingTo;
+    void *pageDirectory;
     bool resume;
 } Syscall;
 
diff --git a/src/kernel/main.c b/src/kernel/main.c
index 350adc8..844c779 100644
--- a/src/kernel/main.c
+++ b/src/kernel/main.c
@@ -21,7 +21,8 @@
 
 Service *findServiceByCR3(uint32_t cr3) {
     foreach (services, Service *, service, {
-        if (service->pagingInfo.pageDirectory == PTR(cr3)) {
+        if (getPhysicalAddressKernel(service->pagingInfo.pageDirectory) ==
+            PTR(cr3)) {
             return service;
         }
     })
@@ -43,6 +44,45 @@
     run(provider->service, provider->address);
 }
 
+void handleInstallSyscall(Syscall *call, Service *service) {
+    Provider *provider = malloc(sizeof(Provider));
+    RegisterServiceProviderSyscall *registerCall = (void *)call;
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(registerCall->pageDirectory, registerCall->name));
+    provider->name = providerName;
+    provider->address = registerCall->handler;
+    provider->service = service;
+    listAdd(&service->providers, provider);
+    call->resume = true;
+    listAdd(&callsToProcess, call);
+}
+
+extern void *runEnd;
+
+void handleRequestSyscall(Syscall *call, Service *service) {
+    RequestSyscall *request = (void *)call;
+    char *serviceName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->service));
+    Service *providerService = findService(serviceName);
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->request));
+    Provider *callProvider = findProvider(providerService, providerName);
+    Syscall *runCall = malloc(sizeof(Syscall));
+    runCall->id = 0;
+    runCall->resume = true;
+    runCall->respondingTo = call;
+    runCall->pageDirectory = providerService->pagingInfo.pageDirectory;
+    runCall->cr3 = U32(getPhysicalAddressKernel(runCall->pageDirectory));
+    runCall->returnEsp = malloc(0x1000);
+    runCall->returnAddress = callProvider->address;
+    runCall->resume = true;
+    sharePage(&providerService->pagingInfo, runCall->returnEsp,
+              runCall->returnEsp);
+    runCall->returnEsp += 0xFFC;
+    *(void **)runCall->returnEsp = runEnd;
+    listAdd(&callsToProcess, runCall);
+}
+
 void kernelMain(void *multibootInfo) {
     setupMemory();
     void *address = kernelMapMultiplePhysicalPages(multibootInfo, 4);
@@ -66,15 +106,12 @@
             continue;
         }
         switch (call->id) {
-        case SYS_REGISTER_FUNCTION:;
-            Provider *provider = malloc(sizeof(Provider));
-            RegisterServiceProviderSyscall *registerCall = (void *)call;
-            provider->name = registerCall->name;
-            provider->address = registerCall->handler;
-            provider->service = service;
-            listAdd(&service->providers, provider);
+        case SYS_REGISTER_FUNCTION:
+            handleInstallSyscall(call, service);
+            break;
+        case SYS_REQUEST:
+            handleRequestSyscall(call, service);
+            break;
         }
-        call->resume = true;
-        listAdd(&callsToProcess, call);
     }
 }
diff --git a/src/kernel/syscalls/syscall.c b/src/kernel/syscalls/syscall.c
index 93006dc..3a1bf1e 100644
--- a/src/kernel/syscalls/syscall.c
+++ b/src/kernel/syscalls/syscall.c
@@ -20,8 +20,8 @@
     if (!callData) {
         asm("jmp runEndSyscall");
     }
-    void *pageDirectory = mapTemporary(cr3);
-    void *dataPhysical = getPhysicalAddress(pageDirectory, callData);
+    callData->pageDirectory = kernelMapPhysical(cr3);
+    void *dataPhysical = getPhysicalAddress(callData->pageDirectory, callData);
     Syscall *data = kernelMapPhysical(dataPhysical);
     data->cr3 = U32(cr3);
     listAdd(&callsToProcess, data);
diff --git a/src/kernel/util/list.c b/src/kernel/util/list.c
index 4fbc79e..aa04956 100644
--- a/src/kernel/util/list.c
+++ b/src/kernel/util/list.c
@@ -2,19 +2,10 @@
 #include <util.h>
 
 void listAdd(ListElement **list, void *data) {
-    ListElement *element = *list;
-    if (!element) {
-        *list = malloc(sizeof(ListElement));
-        element = *list;
-    } else {
-        while (element->next) {
-            element = element->next;
-        }
-        element->next = malloc(sizeof(ListElement));
-        element = element->next;
-    }
-    element->next = NULL;
+    ListElement *element = malloc(sizeof(ListElement));
+    element->next = *list;
     element->data = data;
+    *list = element;
 }
 
 void *listPopFirst(ListElement **list) {

diff --git a/src/include/syscalls.h b/src/include/syscalls.h
index bfedf35..5e5c46b 100644
--- a/src/include/syscalls.h
+++ b/src/include/syscalls.h
@@ -5,8 +5,8 @@
 #include <stdint.h>
 
 typedef enum {
-    SYS_REGISTER_FUNCTION,
-    SYS_REQUEST,
+    SYS_REGISTER_FUNCTION = 1,
+    SYS_REQUEST = 2,
 } SyscallIds;
 
 typedef struct {
@@ -14,6 +14,8 @@
     void *returnAddress;
     void *returnEsp;
     uint32_t cr3;
+    void *respondingTo;
+    void *pageDirectory;
     bool resume;
 } Syscall;
 
diff --git a/src/kernel/main.c b/src/kernel/main.c
index 350adc8..844c779 100644
--- a/src/kernel/main.c
+++ b/src/kernel/main.c
@@ -21,7 +21,8 @@
 
 Service *findServiceByCR3(uint32_t cr3) {
     foreach (services, Service *, service, {
-        if (service->pagingInfo.pageDirectory == PTR(cr3)) {
+        if (getPhysicalAddressKernel(service->pagingInfo.pageDirectory) ==
+            PTR(cr3)) {
             return service;
         }
     })
@@ -43,6 +44,45 @@
     run(provider->service, provider->address);
 }
 
+void handleInstallSyscall(Syscall *call, Service *service) {
+    Provider *provider = malloc(sizeof(Provider));
+    RegisterServiceProviderSyscall *registerCall = (void *)call;
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(registerCall->pageDirectory, registerCall->name));
+    provider->name = providerName;
+    provider->address = registerCall->handler;
+    provider->service = service;
+    listAdd(&service->providers, provider);
+    call->resume = true;
+    listAdd(&callsToProcess, call);
+}
+
+extern void *runEnd;
+
+void handleRequestSyscall(Syscall *call, Service *service) {
+    RequestSyscall *request = (void *)call;
+    char *serviceName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->service));
+    Service *providerService = findService(serviceName);
+    char *providerName = kernelMapPhysical(
+        getPhysicalAddress(request->pageDirectory, request->request));
+    Provider *callProvider = findProvider(providerService, providerName);
+    Syscall *runCall = malloc(sizeof(Syscall));
+    runCall->id = 0;
+    runCall->resume = true;
+    runCall->respondingTo = call;
+    runCall->pageDirectory = providerService->pagingInfo.pageDirectory;
+    runCall->cr3 = U32(getPhysicalAddressKernel(runCall->pageDirectory));
+    runCall->returnEsp = malloc(0x1000);
+    runCall->returnAddress = callProvider->address;
+    runCall->resume = true;
+    sharePage(&providerService->pagingInfo, runCall->returnEsp,
+              runCall->returnEsp);
+    runCall->returnEsp += 0xFFC;
+    *(void **)runCall->returnEsp = runEnd;
+    listAdd(&callsToProcess, runCall);
+}
+
 void kernelMain(void *multibootInfo) {
     setupMemory();
     void *address = kernelMapMultiplePhysicalPages(multibootInfo, 4);
@@ -66,15 +106,12 @@
             continue;
         }
         switch (call->id) {
-        case SYS_REGISTER_FUNCTION:;
-            Provider *provider = malloc(sizeof(Provider));
-            RegisterServiceProviderSyscall *registerCall = (void *)call;
-            provider->name = registerCall->name;
-            provider->address = registerCall->handler;
-            provider->service = service;
-            listAdd(&service->providers, provider);
+        case SYS_REGISTER_FUNCTION:
+            handleInstallSyscall(call, service);
+            break;
+        case SYS_REQUEST:
+            handleRequestSyscall(call, service);
+            break;
         }
-        call->resume = true;
-        listAdd(&callsToProcess, call);
     }
 }
diff --git a/src/kernel/syscalls/syscall.c b/src/kernel/syscalls/syscall.c
index 93006dc..3a1bf1e 100644
--- a/src/kernel/syscalls/syscall.c
+++ b/src/kernel/syscalls/syscall.c
@@ -20,8 +20,8 @@
     if (!callData) {
         asm("jmp runEndSyscall");
     }
-    void *pageDirectory = mapTemporary(cr3);
-    void *dataPhysical = getPhysicalAddress(pageDirectory, callData);
+    callData->pageDirectory = kernelMapPhysical(cr3);
+    void *dataPhysical = getPhysicalAddress(callData->pageDirectory, callData);
     Syscall *data = kernelMapPhysical(dataPhysical);
     data->cr3 = U32(cr3);
     listAdd(&callsToProcess, data);
diff --git a/src/kernel/util/list.c b/src/kernel/util/list.c
index 4fbc79e..aa04956 100644
--- a/src/kernel/util/list.c
+++ b/src/kernel/util/list.c
@@ -2,19 +2,10 @@
 #include <util.h>
 
 void listAdd(ListElement **list, void *data) {
-    ListElement *element = *list;
-    if (!element) {
-        *list = malloc(sizeof(ListElement));
-        element = *list;
-    } else {
-        while (element->next) {
-            element = element->next;
-        }
-        element->next = malloc(sizeof(ListElement));
-        element = element->next;
-    }
-    element->next = NULL;
+    ListElement *element = malloc(sizeof(ListElement));
+    element->next = *list;
     element->data = data;
+    *list = element;
 }
 
 void *listPopFirst(ListElement **list) {
diff --git a/src/userland/loader/main.c b/src/userland/loader/main.c
index 8d8fec5..957fb57 100644
--- a/src/userland/loader/main.c
+++ b/src/userland/loader/main.c
@@ -26,10 +26,13 @@
 }
 
 void testProvider(void *requestData) {
-    writeParallel('t');
-    writeParallel('e');
-    writeParallel('s');
-    writeParallel('t');
+    // writeParallel('t');
+    // writeParallel('e');
+    // writeParallel('s');
+    // writeParallel('t');
+    asm("mov %%eax, %0" ::"r"(0xB105F00D));
+    while (1)
+        ;
 }
 
 void bufferFunction() {}
@@ -58,7 +61,7 @@
 
 void installServiceProvider(char *name, void(provider)(void *)) {
     RegisterServiceProviderSyscall call = {
-        .id = SYS_REQUEST,
+        .id = SYS_REGISTER_FUNCTION,
         .name = name,
         .handler = provider,
     };
@@ -71,7 +74,7 @@
     // writeParallel('I'); // install
     installServiceProvider("test", testProvider);
     // writeParallel('C'); // call
-    // test();
+    test();
     // writeParallel('E'); // end
     return 0;
 }