Bootloop after handing control to kernel (VMware)

[SmartDude1569]

The kernel seems to be halting or stopping during the GDT loading and memory initialization.
Any help would be appreciated (I am on episode 10)

[SmartDude1569]

I have narrowed the error down the initialization of the PML4 variable in PrepareMemory:

#include "gdt/gdt.h"

KernelInfo kernelInfo;
PageTableManager pageTableManager = NULL;
void PrepareMemory(BootInfo* bootInfo){
    uint64_t mMapEntries = bootInfo->mMapSize / bootInfo->mMapDescSize;
    GlobalAllocator = PageFrameAllocator();
    GlobalAllocator.ReadEFIMemoryMap(bootInfo->mMap, bootInfo->mMapSize, bootInfo->mMapDescSize);
    uint64_t kernelSize = (uint64_t)&_KernelEnd - (uint64_t)&_KernelStart;
    uint64_t kernelPages = (uint64_t)kernelSize / 4096 + 1;
    GlobalAllocator.LockPages(&_KernelStart, kernelPages);
    PageTable* PML4 = (PageTable*)GlobalAllocator.RequestPage(); <-------------- here
    while (true);
    pageTableManager = PageTableManager(PML4);
    for (uint64_t t = 0; t < GetMemorySize(bootInfo->mMap, mMapEntries, bootInfo->mMapDescSize); t += 0x1000) {
        pageTableManager.MapMemory((void*)t, (void*)t);
    }
    uint64_t fbBase = (uint64_t)bootInfo->framebuffer->BaseAddress;
    uint64_t fbSize = (uint64_t)bootInfo->framebuffer->BufferSize + 0x1000;
    GlobalAllocator.LockPages((void*)fbBase, fbSize/ 0x1000 + 1);
    for (uint64_t t = fbBase; t < fbBase + fbSize; t += 4096) {
        pageTableManager.MapMemory((void*)t, (void*)t);
    }
    asm ("mov %0, %%cr3" : : "r" (PML4));
    kernelInfo.pageTableManager = &pageTableManager;
}

KernelInfo InitializeKernel(BootInfo* bootInfo){
    GDTDescriptor gdtDescriptor;
    gdtDescriptor.Size = sizeof(GDT) - 1;
    gdtDescriptor.Offset = (uint64_t)&DefaultGDT;
    LoadGDT(&gdtDescriptor);
    PrepareMemory(bootInfo);
    memset(bootInfo->framebuffer->BaseAddress, 0, bootInfo->framebuffer->BufferSize);
    return kernelInfo;
}```